{"id":4072,"date":"2026-10-08T14:30:52","date_gmt":"2026-10-08T14:30:52","guid":{"rendered":"https:\/\/www.tgsteels.com\/cold-work-tool-steels\/1-4112\/"},"modified":"2026-10-08T15:38:14","modified_gmt":"2026-10-08T15:38:14","slug":"1-4112","status":"publish","type":"page","link":"https:\/\/www.tgsteels.com\/en\/cold-work-tool-steels\/1-4112\/","title":{"rendered":"TGP 34 WAHOO ESR"},"content":{"rendered":"[vc_row type=&#8221;full_width_background&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; video_bg=&#8221;use_video&#8221; video_mp4=&#8221;https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.mp4&#8243; video_webm=&#8221;https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.webm&#8221; video_ogv=&#8221;https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.ogv&#8221; background_video_loading=&#8221;default&#8221; scene_position=&#8221;center&#8221; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; parallax_bg=&#8221;true&#8221; parallax_bg_speed=&#8221;fast&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/2&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221; column_padding_type=&#8221;default&#8221; gradient_type=&#8221;default&#8221;][divider line_type=&#8221;No Line&#8221; custom_height=&#8221;450&#8243;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<h1>TGP 34 WAHOO ESR <span style=\"display:block;font-size:.5em;line-height:1.35;margin-top:.4em\">(1.4112, X90CrMoV18)<\/span><\/h1>\n[\/vc_column_text][divider line_type=&#8221;No Line&#8221; custom_height=&#8221;50&#8243;][\/vc_column][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/2&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h4>Electroaslag Remelted cold work tool steel with 18% Chromium with very high wear resistance associated with an excellent corrosion resistance.<\/h4>\n<\/div>\n[\/vc_column_text][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<p>TGP34 WAHOO ESR;<\/p>\n<ul>\n<li>is an Electroslag Remelted <em>(ESR)<\/em> 18% Cr steel that ensures a very high level of cleanliness and homogeneity.<\/li>\n<li>has a very high wear resistance associated with a high hardness.<\/li>\n<li>exhibits a very good corrosion resistance.<\/li>\n<li>is suitable for the food and medical industries.<\/li>\n<li>is suitable for surface treatments.<\/li>\n<\/ul>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Applications<\/h3>\n<p>TGP34 WAHOO ESR is a versatile material widely used in the manufacture of cutting and punching tools, including blades and knives designed for food contact. Its excellent corrosion resistance makes it suitable for applications such as ball bearings, valve parts, and other components exposed to harsh environments.<\/p>\n<p>Additionally, TGP34 WAHOO ESR is ideal for parts that encounter highly abrasive or corrosive materials. It is frequently used in the production of plastics moulding tools where high polishability is required, as well as guiding components that demand durability and precision.<\/p>\n<p>The material\u2019s properties also make it suitable for medical tools and precision measuring equipment.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Main properties<\/h3>\n<ul>\n<li>Excellent wear resistance<\/li>\n<li>Excellent corrosion resistance<\/li>\n<li>High polishability<\/li>\n<li>High hardenability<\/li>\n<\/ul>\n<h3>Chemical composition <em>(typical)<\/em><\/h3>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>C<\/th>\n<th>Mn<\/th>\n<th>Si<\/th>\n<th>P<\/th>\n<th>S<\/th>\n<th>Cr<\/th>\n<th>Mo<\/th>\n<th>V<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>0.90<\/td>\n<td>\u2264 1.0<\/td>\n<td>\u2264 1.0<\/td>\n<td>\u2264 0.030<\/td>\n<td>\u2264 0.005<\/td>\n<td>18.0<\/td>\n<td>1.10<\/td>\n<td>0.10<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Designation<\/h3>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Werkstoff Nr<\/th>\n<th>ISO<\/th>\n<th>China GB<\/th>\n<th>JIS Japan<\/th>\n<th>UK<\/th>\n<th>AISI USA<\/th>\n<th>Russia Gost<\/th>\n<th>AFNOR<\/th>\n<th>Other \/ Special<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1.4112<\/td>\n<td>X90CrMoV18<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Structure<\/h3>\n<p>The structure of the TGP34 WAHOO ESR is fine and homogeneous without precipitation or alignments of big carbides.<\/p>\n<h3>Hardness at the time of delivery<\/h3>\n<p>Annealed for 260 HB max.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Physical properties<\/h3>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Temperature<\/th>\n<th>20\u00b0C<\/th>\n<th>300\u00b0C<\/th>\n<th>500\u00b0C<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Volumic mass kg\/m\u00b3<\/th>\n<td>7700<\/td>\n<td>7660<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<tr>\n<th>Young Modulus N\/mm\u00b2<\/th>\n<td>220000<\/td>\n<td>202000<\/td>\n<td>183000<\/td>\n<\/tr>\n<tr>\n<th>Thermal conductivity W\/m.K<\/th>\n<td>19.0<\/td>\n<td>21.9<\/td>\n<td>23.5<\/td>\n<\/tr>\n<tr>\n<th>Coefficient of linear expansion 10<sup>-6<\/sup>\/K<\/th>\n<td>10.8<\/td>\n<td>11.3<\/td>\n<td>12.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Heat treatment<\/h3>\n<h4>Soft annealing<\/h4>\n<p>Temperature: 810 &#8211; 860\u00b0C, duration 1h + 1h for 25 mm thickness. slow cooling in the oven <em>(10 to 20\u00b0C\/h)<\/em>. The atmosphere in the furnace must be reducing to avoid decarburization of the steel.<\/p>\n<h4>Stress relieving<\/h4>\n<p>After machining, it is recommended to perform stress relieving at 650\u00b0C for a minimum of 2 hours, followed by slow cooling in the oven to 450\u00b0C.<\/p>\n<h4>Austenitization<\/h4>\n<p>In order to avoid any risk of cracking it is recommended to preheat in 2 steps.<\/p>\n<ul>\n<li>1st preheating step: temperature: 550\u00b0C time: 30 s\/mm of thickness<\/li>\n<li>2nd preheating step: temperature: 750\u00b0C time: 30 s\/mm of thickness<\/li>\n<\/ul>\n<p>Recommended austenitizing temperature: 980 &#8211; 1000\u00b0C. The holding time should not be too long to avoid a risk of grain coarsening and a loss of toughness. It is recommended to keep the part at the austenitizing temperature 30 minutes per inch of thickness as soon as the temperature of the surface reach the austenitization temperature.<\/p>\n<h4>Quenching medium<\/h4>\n<p>Oil at 80\u00b0C, vacuum <em>(pressure &gt; 6 Bars)<\/em>, salt bath 500 &#8211; 550\u00b0C.<br \/>\nTo ensure good toughness, treatment with oil or salt bath is preferable.<br \/>\nAfter quenching the hardness is 56 HRC.<\/p>\n<h4>Sub zero treatment<\/h4>\n<p>For parts that need to have high dimensional stability and to increase wear resistance without reducing toughness, it is recommended to perform a subzero treatment at a temperature between -70\u00b0C and -190\u00b0C for 1 hour for 25 mm of thickness of the part.<\/p>\n<p>The temperature range from -70\u00b0C up to -120\u00b0C <em>(named cold treatment of steel)<\/em> leads to the complete transformation of austenite into martensite and as a consequence to better stability associated with improved hardness and better wear resistance and the temperature range from -135\u00b0C down to -190\u00b0C <em>(named cryotreatment of steel)<\/em> leads also to the complete transformation of austenite and also the precipitation of ultrafine carbides improving a lot the wear resistance without modification of the toughness. This treatment is optional for common applications.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h4>Tempering<\/h4>\n<p>To ensure a minimum residual austenite rate as well as greater tool stability, it is essential to perform a double tempering. Each tempering is followed by a cooling under 100\u00b0C.<\/p>\n<p>Each tempering time must be at least equal to 1h + 1h for 25 mm of thickness of the treated part <em>(equivalent thermal thickness)<\/em>. For the best corrosion resistance the tempering is preferably done at a temperature in the range 250 to 350\u00b0C. For the best wear resistance a tempering temperature slightly over 500\u00b0C is recommended associated with a sub zero treatment after quenching.<\/p>\n<p>Tempering and corrosion resistance:<br \/>\nIn order to improve the corrosion resistance of the 4112 PRIME, the tempering must be performed at a temperature outside of the area between 350 and 500\u00b0C, since in this temperature range there is a precipitation of chromium carbides, which weaken the steel and greatly reduce its resistance to corrosion.<\/p>\n<p><img decoding=\"async\" class=\"wp-image-4035\" src=\"https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/10\/tgp-34-wahoo-esr-tempering-curve.png\" alt=\"TGP 34 WAHOO ESR tempering curve: hardness (HRC) versus tempering temperature (\u00b0C), about 56 HRC at low temperatures, a secondary hardness maximum near 500 \u00b0C and a sharp drop above 550 \u00b0C\" width=\"520\" height=\"524\" loading=\"lazy\" style=\"max-width:100%;height:auto\" srcset=\"https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/10\/tgp-34-wahoo-esr-tempering-curve.png 680w, https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/10\/tgp-34-wahoo-esr-tempering-curve-298x300.png 298w, https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/10\/tgp-34-wahoo-esr-tempering-curve-150x150.png 150w, https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/10\/tgp-34-wahoo-esr-tempering-curve-140x140.png 140w, https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/10\/tgp-34-wahoo-esr-tempering-curve-100x100.png 100w\" sizes=\"auto, (max-width: 520px) 100vw, 520px\" \/><\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Surface treatment<\/h3>\n<h4>Nitriding<\/h4>\n<p>Because of the low tempering temperature and the high Cr content the TGP34 WAHOO ESR is not suitable for nitriding.<\/p>\n<h4>PVD, CVD<\/h4>\n<p>TGP34 WAHOO ESR is suitable for all kinds of PVD and CVD treatment as soon as the treatment temperature is 30\u00b0C lower than the last tempering temperature.<\/p>\n<h3>Polishing<\/h3>\n<p>TGP34 WAHOO ESR a remelted steel grade and so it is suitable for polishing in the heat treated condition and it can be used for applications requiring a mirror polished level <em>(Rt \u2264 0.25 \u00b5m, CNOMO level 1, Rugotest N1)<\/em> as used for parts requiring a mirror polishing level.<\/p>\n<p>Optimal polishing is achieved by performing consecutive steps of fairly close roughness and stopping each step as soon as the last scratch of the previous step disappears.<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;60&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h3>Machining<\/h3>\n<p>The machining parameters below are given for information only and must be adapted according to the equipment and usual machining conditions.<\/p>\n<h4>Turning<\/h4>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>Carbide tool<br \/>Rough machining<\/th>\n<th>Carbide tool<br \/>Finishing<\/th>\n<th>HSS tool<br \/>Finishing<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Cutting speed m\/min<\/th>\n<td>100 &#8211; 150<\/td>\n<td>140 &#8211; 200<\/td>\n<td>10 &#8211; 15<\/td>\n<\/tr>\n<tr>\n<th>Feed mm\/r<\/th>\n<td>0.2 &#8211; 0.4<\/td>\n<td>0.1 &#8211; 0.2<\/td>\n<td>0.1 &#8211; 0.3<\/td>\n<\/tr>\n<tr>\n<th>Depth of cut mm<\/th>\n<td>1 &#8211; 4<\/td>\n<td>0.5 &#8211; 2<\/td>\n<td>0.5 &#8211; 2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"max-width:680px\">\n<h4>Milling: surfacing<\/h4>\n<\/div>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>Milling with carbide tools<br \/>Rough machining<\/th>\n<th>Milling with carbide tools<br \/>\u00bd Finishing<\/th>\n<th>Solid tool<br \/>Finishing<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Cutting speed m\/min<\/th>\n<td>100 &#8211; 120<\/td>\n<td>140 &#8211; 160<\/td>\n<td>70 -90<\/td>\n<\/tr>\n<tr>\n<th>Feed mm\/r<\/th>\n<td>0.2 &#8211; 0.4<\/td>\n<td>0.1 &#8211; 0.2<\/td>\n<td>0.02 &#8211; 0.2<\/td>\n<\/tr>\n<tr>\n<th>Depth of cut mm<\/th>\n<td>2 &#8211; 4<\/td>\n<td>0.5 &#8211; 2<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"max-width:680px\">\n<h4>Drilling: carbide drill<\/h4>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Carbide type<\/th>\n<th>Indexable insert<\/th>\n<th>Solid carbid<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>Cutting speed m\/min<\/th>\n<td>80 &#8211; 100<\/td>\n<td>50 &#8211; 70<\/td>\n<\/tr>\n<tr>\n<th>Feed mm\/t<\/th>\n<td>0.05 &#8211; 0.10<\/td>\n<td>0.10 &#8211; 0.25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<h4>HSS twist drill<\/h4>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Drill diameter mm<\/th>\n<th>Cutting speed m\/min<\/th>\n<th>Feed mm\/t<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>&lt; 5<\/td>\n<td>10 &#8211; 12<\/td>\n<td>0.05 &#8211; 0.15<\/td>\n<\/tr>\n<tr>\n<td>5 &#8211; 10<\/td>\n<td>10 &#8211; 12<\/td>\n<td>0.15 &#8211; 0.20<\/td>\n<\/tr>\n<tr>\n<td>10 &#8211; 15<\/td>\n<td>10 &#8211; 12<\/td>\n<td>0.20 &#8211; 0.25<\/td>\n<\/tr>\n<tr>\n<td>15 &#8211; 20<\/td>\n<td>10 &#8211; 12<\/td>\n<td>0.25 &#8211; 0.30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"max-width:680px\">\n<h4>Fine grinding<\/h4>\n<p>General indications for grinding wheels to be used on TGP34 WAHOO ESR in the heat treated condition. Usually, rather soft vitrified aluminum oxide  grinding wheels <em>(grades G for plane grinding to K for cylindrical grinding)<\/em> are used.<\/p>\n<p>Particular attention will be paid to effective cooling of the surface during grinding to prevent degradation of the material surface.<\/p>\n<h4>Electro-discharge machining<\/h4>\n<p>TGP34 WAHOO ESR is also suitable for EDM machining <em>(wire or electrode)<\/em>. Preferably, the machining will be carried out with a low current density and a high frequency in order to limit the thickness of the white layer as much as possible.<\/p>\n<p>Then it is necessary to carry out a stress relieving at 25\u00b0 C below the last tempering in order to reduce the level of residual stresses <em>(which could lead to a risk of cracking)<\/em> and to carry out a polishing to completely remove the white layer formed during the discharge machining process.<\/p>\n<h3>Welding<\/h3>\n<p>It is not recommended to weld TGP34 WAHOO ESR since there is a high risk of cracking.<\/p>\n<p>If this is mandatory to weld it, in the annealed conditions, then preheat to 260\u00b0C, maintain the tool at 300\u00b0C during the welding operation without exceeding 400\u00b0C and post treat at 725 &#8211; 760\u00b0C for at least 5 hours followed by a slow cooling in the furnace <em>(10 to 20\u00b0C\/h)<\/em>.<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=&#8221;in_container&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; scene_position=&#8221;center&#8221; bottom_padding=&#8221;120&#8243; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221; column_element_direction_desktop=&#8221;default&#8221; column_element_spacing=&#8221;default&#8221; desktop_text_alignment=&#8221;default&#8221; tablet_text_alignment=&#8221;default&#8221; phone_text_alignment=&#8221;default&#8221; background_color_opacity=&#8221;1&#8243; background_hover_color_opacity=&#8221;1&#8243; column_backdrop_filter=&#8221;none&#8221; column_shadow=&#8221;none&#8221; column_border_radius=&#8221;none&#8221; column_link_target=&#8221;_self&#8221; column_position=&#8221;default&#8221; gradient_direction=&#8221;left_to_right&#8221; overlay_strength=&#8221;0.3&#8243; width=&#8221;1\/1&#8243; tablet_width_inherit=&#8221;default&#8221; animation_type=&#8221;default&#8221; bg_image_animation=&#8221;none&#8221; border_type=&#8221;simple&#8221; column_border_width=&#8221;none&#8221; column_border_style=&#8221;solid&#8221;][vc_column_text css=&#8221;&#8221; text_direction=&#8221;default&#8221;]\n<div style=\"max-width:680px\">\n<p><a href=\"https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/04\/TGP34-WAHOO-ESR.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Download the TGP 34 WAHOO ESR datasheet (PDF)<\/strong><\/a><\/p>\n<p>More grades: <a href=\"https:\/\/www.tgsteels.com\/en\/cold-work-tool-steels\/\">Cold Work Tool Steels<\/a>. Where to buy: <a href=\"https:\/\/www.tgsteels.com\/en\/service-network\/\">Service Network<\/a>.<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"<p>[vc_row type=&#8221;full_width_background&#8221; full_screen_row_position=&#8221;middle&#8221; column_margin=&#8221;default&#8221; column_direction=&#8221;default&#8221; column_direction_tablet=&#8221;default&#8221; column_direction_phone=&#8221;default&#8221; video_bg=&#8221;use_video&#8221; video_mp4=&#8221;https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.mp4&#8243; video_webm=&#8221;https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.webm&#8221; video_ogv=&#8221;https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.ogv&#8221; background_video_loading=&#8221;default&#8221; scene_position=&#8221;center&#8221; text_color=&#8221;dark&#8221; text_align=&#8221;left&#8221; row_border_radius=&#8221;none&#8221; row_border_radius_applies=&#8221;bg&#8221; overflow=&#8221;visible&#8221; overlay_strength=&#8221;0.3&#8243; gradient_direction=&#8221;left_to_right&#8221; shape_divider_position=&#8221;bottom&#8221; bg_image_animation=&#8221;none&#8221; parallax_bg=&#8221;true&#8221; parallax_bg_speed=&#8221;fast&#8221; gradient_type=&#8221;default&#8221; shape_type=&#8221;&#8221;][vc_column column_padding=&#8221;no-extra-padding&#8221; column_padding_tablet=&#8221;inherit&#8221; column_padding_phone=&#8221;inherit&#8221; column_padding_position=&#8221;all&#8221;&#8230;<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":546,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-4072","page","type-page","status-publish"],"_links":{"self":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4072","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/comments?post=4072"}],"version-history":[{"count":1,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4072\/revisions"}],"predecessor-version":[{"id":4148,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4072\/revisions\/4148"}],"up":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/546"}],"wp:attachment":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/media?parent=4072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}