{"id":4183,"date":"2026-10-09T06:33:52","date_gmt":"2026-10-09T06:33:52","guid":{"rendered":"https:\/\/www.tgsteels.com\/precipitation-hardening-martensitic-steel\/17-4-ph\/"},"modified":"2026-10-09T06:33:52","modified_gmt":"2026-10-09T06:33:52","slug":"17-4-ph","status":"publish","type":"page","link":"https:\/\/www.tgsteels.com\/en\/precipitation-hardening-martensitic-steel\/17-4-ph\/","title":{"rendered":"17-4 PH"},"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; bg_image=&#8221;3296&#8243; bg_position=&#8221;center top&#8221; background_image_loading=&#8221;default&#8221; bg_repeat=&#8221;no-repeat&#8221; scene_position=&#8221;center&#8221; text_color=&#8221;light&#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\/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; 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>17-4 PH <span style=\"display:block;font-size:.5em;line-height:1.35;margin-top:.4em\">(UNS S17400, 1.4548)<\/span><\/h1>\n[\/vc_column_text][divider line_type=&#8221;No Line&#8221; custom_height=&#8221;50&#8243;][\/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>Motor Shafts, Aircraft Structural parts, Valve Stems, Gears<\/p>\n<h3>Features<\/h3>\n<ul>\n<li>The 17-4 PH is a martensitic precipitation-hardening stainless steel with excellent corrosion resistance and outstanding mechanical properties. Conforming to the stringent AMS 5604, AMS 5622, and AMS 5643 specifications, this alloy is meticulously engineered to meet the most demanding industrial requirements.<\/li>\n<li>The exceptional corrosion resistance of the 17-4 PH alloy stems from its carefully crafted chemical composition, blending chromium, nickel, and copper in precise proportions, this unique formulation imbues the material with an unrivaled ability to withstand a broad spectrum of corrosive environments.<\/li>\n<li>Moreover, the alloy\u2019s precipitation hardening capabilities allow for precise control over its mechanical properties, through a carefully controlled heat treatment process, 17-4 PH can achieve remarkable strength and hardness levels while maintaining excellent toughness and ductility.<\/li>\n<\/ul>\n<h3>Standard<\/h3>\n<p>AMS 5604 \/ AMS 5622 \/ AMS 5643<\/p>\n<h3>Material<\/h3>\n<p>17-4 PH \/ UNS S17400 \/ W.Nr 1.4548<\/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>Chemical composition <em>(Nominal)<\/em> %<\/h3>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Grade<\/th>\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<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>17-4 PH<\/td>\n<td>0.07 max<\/td>\n<td>1.00 max<\/td>\n<td>1.00 max<\/td>\n<td>0.040 max<\/td>\n<td>0.030 max<\/td>\n<td>15.00-17.50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table>\n<thead>\n<tr>\n<th>Ni<\/th>\n<th>Nb<\/th>\n<th>Cu<\/th>\n<th>Mo<\/th>\n<th>Fe<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>3.00-5.00<\/td>\n<td>5xC%-0.45<\/td>\n<td>3.00-5.00<\/td>\n<td>0.50 max<\/td>\n<td>Bal<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"max-width:680px\">\n<h3>Physical properties<\/h3>\n<\/div>\n<table>\n<tbody>\n<tr>\n<th>Density<\/th>\n<td>7.74 g\/cm<sup>3<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<div style=\"max-width:680px\">\n<h3>Mechanical properties<\/h3>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Condition<\/th>\n<th>Tensile Strength, min, MPa<\/th>\n<th>Yield Strength, min. <em>(0.2 % offset)<\/em>, min, MPa<\/th>\n<th>Elongation in 2 in. or 50 mm <em>(or 4D)<\/em>, %<\/th>\n<th>Reduction of Area, min,%<\/th>\n<th>Hardness, HB<\/th>\n<th>Hardness, HRC<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<th>H900<\/th>\n<td>1310<\/td>\n<td>1172<\/td>\n<td>10<\/td>\n<td>40<\/td>\n<td>388-444<\/td>\n<td>40-47<\/td>\n<\/tr>\n<tr>\n<th>H925<\/th>\n<td>1172<\/td>\n<td>1069<\/td>\n<td>10<\/td>\n<td>44<\/td>\n<td>375-429<\/td>\n<td>38-45<\/td>\n<\/tr>\n<tr>\n<th>H1025<\/th>\n<td>1069<\/td>\n<td>1000<\/td>\n<td>12<\/td>\n<td>45<\/td>\n<td>331-401<\/td>\n<td>34-42<\/td>\n<\/tr>\n<tr>\n<th>H1075<\/th>\n<td>1000<\/td>\n<td>862<\/td>\n<td>13<\/td>\n<td>45<\/td>\n<td>311-375<\/td>\n<td>31-38<\/td>\n<\/tr>\n<tr>\n<th>H1100<\/th>\n<td>965<\/td>\n<td>793<\/td>\n<td>14<\/td>\n<td>45<\/td>\n<td>302-363<\/td>\n<td>30-37<\/td>\n<\/tr>\n<tr>\n<th>H1150<\/th>\n<td>931<\/td>\n<td>724<\/td>\n<td>16<\/td>\n<td>50<\/td>\n<td>277-352<\/td>\n<td>28-37<\/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 id=\"round-bar\">Round bar<\/h3>\n<h4>Size range<\/h4>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Product<\/th>\n<th>Material<\/th>\n<th>WD Range<\/th>\n<th>Length Range<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>ROUND BAR<\/td>\n<td>17-4 PH<\/td>\n<td>\u03a65mm ~ \u03a6500mm<\/td>\n<td>3000~6000mm<\/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 id=\"plate-and-sheet\">Plate and sheet<\/h3>\n<h4>Size range<\/h4>\n<\/div>\n<table>\n<thead>\n<tr>\n<th>Product<\/th>\n<th>Material<\/th>\n<th>WD Range<\/th>\n<th>Length Range<\/th>\n<th>WT Range<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>PLATE &amp; SHEET<\/td>\n<td>17-4 PH<\/td>\n<td>1000~2000mm<\/td>\n<td>2000~6000mm<\/td>\n<td>0.5~150mm<\/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;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\/05\/17-4-PH-Round-Bar-.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Download the 17-4 PH round bar datasheet (PDF)<\/strong><\/a><\/p>\n<p><a href=\"https:\/\/www.tgsteels.com\/wp-content\/uploads\/2026\/05\/17-4-PH-Plate-Sheet-.pdf\" target=\"_blank\" rel=\"noopener\"><strong>Download the 17-4 PH plate and sheet datasheet (PDF)<\/strong><\/a><\/p>\n<p>More grades: <a href=\"https:\/\/www.tgsteels.com\/en\/precipitation-hardening-martensitic-steel\/\">Precipitation-Hardening Martensitic Steel<\/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; bg_image=&#8221;3296&#8243; bg_position=&#8221;center top&#8221; background_image_loading=&#8221;default&#8221; bg_repeat=&#8221;no-repeat&#8221; scene_position=&#8221;center&#8221; text_color=&#8221;light&#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":3293,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"inline_featured_image":false,"footnotes":""},"class_list":["post-4183","page","type-page","status-publish"],"_links":{"self":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4183","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=4183"}],"version-history":[{"count":0,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/4183\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/pages\/3293"}],"wp:attachment":[{"href":"https:\/\/www.tgsteels.com\/en\/wp-json\/wp\/v2\/media?parent=4183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}