{"id":4068,"date":"2026-10-08T14:30:24","date_gmt":"2026-10-08T14:30:24","guid":{"rendered":"https:\/\/www.tgsteels.com\/cold-work-tool-steels\/1-2355-s7\/"},"modified":"2026-10-08T15:37:06","modified_gmt":"2026-10-08T15:37:06","slug":"1-2355-s7","status":"publish","type":"page","link":"https:\/\/www.tgsteels.com\/en\/cold-work-tool-steels\/1-2355-s7\/","title":{"rendered":"2355 PRIME"},"content":{"rendered":"[vc_row type=”full_width_background” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” video_bg=”use_video” video_mp4=”https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.mp4″ video_webm=”https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.webm” video_ogv=”https:\/\/www.tgsteels.com\/wp-content\/uploads\/2025\/09\/hss-hero-1.ogv” background_video_loading=”default” scene_position=”center” text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” parallax_bg=”true” parallax_bg_speed=”fast” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/2″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid” column_padding_type=”default” gradient_type=”default”][divider line_type=”No Line” custom_height=”450″][vc_column_text css=”” text_direction=”default”]\n

2355 PRIME (1.2355, 1.2357, 50CrMoV13-15, 5Cr3Mn1SiMo1V, SKD7, BH10, S7)<\/span><\/h1>\n[\/vc_column_text][divider line_type=”No Line” custom_height=”50″][\/vc_column][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/2″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
\n

High toughness cold and hot work tool steel with high shock resistance<\/h4>\n<\/div>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n
\n

2355 PRIME;<\/p>\n

    \n
  • is a medium alloyed steel with a high toughness after a simple heat treatment.<\/li>\n
  • is very good for surface hardenings such as laser hardening and induction hardening.<\/li>\n
  • can be used either for cold work or hot work applications.<\/li>\n
  • has a good weldability (easy for maintenance of the tools)<\/em><\/li>\n
  • can be hardened up to 58 HRC with a simple heat treatment.<\/li>\n<\/ul>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
    \n

    Applications<\/h3>\n

    2355 PRIME can be used for cold or hot working blanking dies, punches, and all kinds of tools requiring a high level of toughness.<\/p>\n

    2355 PRIME can be used for cold and hot working shearing blades, cutting blades, chisels.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n

    \n

    Main properties<\/h3>\n
      \n
    • Very good toughness<\/li>\n
    • Very good shock resistance<\/li>\n
    • Good cutting properties<\/li>\n
    • Good wear resistance<\/li>\n<\/ul>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
      \n

      Chemical composition (typical)<\/em><\/h3>\n<\/div>\n\n\n\n\n\n
      C<\/th>\nMn<\/th>\nSi<\/th>\nP<\/th>\nS<\/th>\nCr<\/th>\nMo<\/th>\nV<\/th>\n<\/tr>\n<\/thead>\n
      0.50<\/td>\n0.70<\/td>\n0.50<\/td>\n\u2264 0.03<\/td>\n\u2264 0.005<\/td>\n3.25<\/td>\n1.40<\/td>\n0.25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
      \n

      Designation<\/h3>\n<\/div>\n\n\n\n\n\n
      Werkstoff Nr<\/th>\nISO<\/th>\nChina GB<\/th>\nJIS Japan<\/th>\nUK<\/th>\nAISI USA<\/th>\nRussia Gost<\/th>\nAFNOR<\/th>\nOther \/ Special<\/th>\n<\/tr>\n<\/thead>\n
      1.2355 (\u2248 1.2357)<\/em><\/td>\n50CrMoV13-15<\/td>\n5Cr3Mn1SiMo1V<\/td>\nSKD7<\/td>\nBH10<\/td>\nS7<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
      \n

      Structure<\/h3>\n

      Because of the moderate carbon content and the medium chromium content the structure of the 2355 PRIME is fine and homogeneous without precipitation or alignments of carbides.<\/p>\n

      Hardness at the time of delivery<\/h3>\n

      Annealed for 230 HB max.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n

      \n

      Physical properties<\/h3>\n<\/div>\n\n\n\n\n\n\n\n\n
      Temperature<\/th>\n20\u00b0C<\/th>\n350\u00b0C<\/th>\n500\u00b0C<\/th>\n<\/tr>\n<\/thead>\n
      Volumic mass kg\/m3<\/sup><\/th>\n7850<\/td>\n7790<\/td>\n7750<\/td>\n<\/tr>\n
      Young Modulus N\/mm\u00b2<\/th>\n210000<\/td>\n200000<\/td>\n188000<\/td>\n<\/tr>\n
      Thermal conductivity W\/m.K<\/th>\n29<\/td>\n31<\/td>\n32<\/td>\n<\/tr>\n
      Coefficient of linear expansion 10-6<\/sup>\/K<\/th>\n12.5<\/td>\n13.2<\/td>\n14.1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n
      \n

      Heat treatment<\/h3>\n

      Soft annealing<\/h4>\n

      Temperature: 820 – 850\u00b0C, duration 1h + 1h for 25 mm thickness. slow cooling in the oven (10 to 20\u00b0C\/h)<\/em>. The atmosphere in the furnace must be reducing to avoid decarburization of the steel.<\/p>\n

      Stress relieving<\/h4>\n

      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

      Austenitization<\/h4>\n

      In order to avoid any risk of cracking it is recommended to preheat in 2 steps.<\/p>\n

        \n
      • 1st preheating step: temperature: 450\u00b0C time: 30 s\/mm of thickness<\/li>\n
      • 2nd preheating step: temperature: 800\u00b0C time: 30 s\/mm of thickness<\/li>\n<\/ul>\n

        Recommended austenitizing temperature: 930 – 960\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

        Quenching medium<\/h4>\n

        Oil at 80\u00b0C, vacuum (pressure> 6 bars)<\/em>, salt bath 500 – 550\u00b0C.
        \nTo ensure good toughness, treatment with oil or salt bath is preferable.
        \nThe hardness after quenching is 59 – 61 HRC.<\/p>\n

        Sub zero treatment<\/h4>\n

        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

        The temperature range from -70\u00b0C up to -120\u00b0C (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 (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.<\/p>\n

        This treatment is optional for common applications.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n

        \n

        Tempering<\/h4>\n

        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

        Each tempering time must be at least equal to 1h + 1h for 25 mm of thickness of the treated part (equivalent thermal thickness)<\/em>.<\/p>\n

        The optimal hardness for most of the uses is in the range 55 to 58 HRC with tempering temperatures in the range 150 to 250\u00b0C.<\/p>\n<\/div>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n

        \n

        \"2355<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n

        \n

        Surface treatment<\/h3>\n

        Nitriding<\/h4>\n

        2355 PRIME is not recommended to be nitride since the nitriding temperature of the 2355 PRIME is quite low.<\/p>\n

        PVD, CVD<\/h4>\n

        2355 PRIME 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<\/div>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n

        \n

        Polishing<\/h3>\n

        2355 PRIME is perfectly suitable for polishing in the treated state and can be used for applications requiring a sufficient level of polish for translucent – transparent parts (Rt \u2264 20 \u03bcm, CNOMO level 2, Rugotest N7)<\/em>.<\/p>\n

        Optimal polishing is achieved by performing consecutive steps with similar roughness and stopping each step as soon as the last scratch from the previous step disappears.<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n

        \n

        Surface hardening<\/h3>\n

        The surface of the 2355 PRIME can be hardened by induction, laser or torch heating.<\/p>\n

        By induction it is typically possible to achieve a surface hardness of the order of 62 HRC at a depth of 2 mm (1 mm by laser)<\/em>. This hardening must be followed by a low-temperature tempering to release the stresses induced by the treatment and to adjust the hardness.<\/p>\n

        By using an oxyacetylene torch with heating to 1000\u00b0C followed by air quenching, it is quite possible to obtain a surface hardness of 60 to 62 HRC.<\/p>\n<\/div>\n[\/vc_column_text][\/vc_column][\/vc_row][vc_row type=”in_container” full_screen_row_position=”middle” column_margin=”default” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” scene_position=”center” bottom_padding=”60″ text_color=”dark” text_align=”left” row_border_radius=”none” row_border_radius_applies=”bg” overflow=”visible” overlay_strength=”0.3″ gradient_direction=”left_to_right” shape_divider_position=”bottom” bg_image_animation=”none” gradient_type=”default” shape_type=””][vc_column column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” column_position=”default” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][vc_column_text css=”” text_direction=”default”]\n

        \n

        Machining<\/h3>\n

        The machining parameters below are given for information only and must be adapted according to the equipment and usual machining conditions.<\/p>\n

        Turning<\/h4>\n<\/div>\n\n\n\n\n\n\n\n
        <\/th>\nCarbide tool
        Rough machining<\/th>\n        		Carbide tool
        Finishing<\/th>\n        		HSS tool
        Finishing<\/th>\n<\/tr>\n<\/thead>\n
        Cutting speed m\/min<\/th>\n130 – 170<\/td>\n170 – 220<\/td>\n17 – 22<\/td>\n<\/tr>\n
        Feed mm\/r<\/th>\n0.15 – 0.3<\/td>\n0.1 – 0.15<\/td>\n0.1 – 0.3<\/td>\n<\/tr>\n
        Depth of cut mm<\/th>\n2 – 3<\/td>\n0.5 – 1.5<\/td>\n0.5 – 2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n

        Milling: surfacing<\/h4>\n<\/div>\n\n\n\n\n\n\n\n
        <\/th>\nMilling with carbide tools
        Rough machining<\/th>\n        		Milling with carbide tools
        \u00bd Finishing<\/th>\n        		Solid tool
        Finishing<\/th>\n<\/tr>\n<\/thead>\n
        Cutting speed m\/min<\/th>\n140 – 160<\/td>\n180 – 200<\/td>\n110 – 130<\/td>\n<\/tr>\n
        Feed mm\/r<\/th>\n0.30<\/td>\n0.1 – 0.2<\/td>\n0.15 – 0.05<\/td>\n<\/tr>\n
        Depth of cut mm<\/th>\n2 – 3<\/td>\n1 – 1.5<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n

        HSS twist drill<\/h4>\n<\/div>\n\n\n\n\n\n\n\n\n
        Drill diameter mm<\/th>\nCutting speed m\/min<\/th>\nFeed mm\/t<\/th>\n<\/tr>\n<\/thead>\n
        < 5<\/td>\n14 – 17<\/td>\n0.05 – 0.15<\/td>\n<\/tr>\n
        5 – 10<\/td>\n14 – 17<\/td>\n0.15 – 0.20<\/td>\n<\/tr>\n
        10 – 15<\/td>\n14 – 17<\/td>\n0.20 – 0.30<\/td>\n<\/tr>\n
        15 – 20<\/td>\n14 – 17<\/td>\n0.30 – 0.40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
        \n

        Drilling: carbide drill<\/h4>\n<\/div>\n\n\n\n\n\n\n
        Carbide type<\/th>\nIndexable insert<\/th>\nSolid carbid<\/th>\nCarbide tip<\/th>\n<\/tr>\n<\/thead>\n
        Cutting speed m\/min<\/th>\n160 – 180<\/td>\n100 – 130<\/td>\n55 – 80<\/td>\n<\/tr>\n
        Feed mm\/t<\/th>\n0.05 – 0.10<\/td>\n0.10 – 0.25<\/td>\n0.15 – 0.25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n[\/vc_column_text][vc_column_text css=”” text_direction=”default”]\n
        \n

        Fine grinding<\/h4>\n

        General indications for grinding wheels to be used on 2355 PRIME in the heat treated condition.<\/p>\n

        Usually, rather soft vitrified aluminum oxide grinding wheels (grades G for plane grinding to K for cylindrical grinding)<\/em> are used.<\/p>\n

        Particular attention will be paid to effective cooling of the surface during grinding to prevent degradation of the material surface.<\/p>\n

        Electro-discharge machining<\/h4>\n

        2355 PRIME is also suitable for EDM machining (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

        Then it is necessary to carry out stress relieving at 25\u00b0C below the last tempering in order to reduce the level of residual stresses (which could lead to a risk of cracking)<\/em> and to carry out polishing to completely remove the white layer formed during the discharge machining process.<\/p>\n

        Welding<\/h3>\n

        2355 PRIME could be welded either in the annealed condition (better)<\/em> or in the heat treated condition.<\/p>\n