Hardening Martensitic and Ferritic Stainless Steel<\/h2>\n\nThe basics of this group of classic heat treatments is that the stainless steel components are heated to the appropriate hardening temperature of the alloy (usually between 800-900\u00b0C), held at temperature, then “quenched” (rapidly cooled) in a protective gas. This is followed by tempering (a soak at a lower temperature) which develops the final mechanical properties and relieves stresses. The processes are typically relevant for ferritic and martensitic stainless steels.<\/p>\n<\/div>\n
\nThe list of specialty heat treatment processes that Expanite can perform is principally never-ending; some of the major categories include case hardening, tempering, solution, and annealing treatments.<\/p>\n<\/div>\n
\nHeat Treatment of Ferritic Stainless Steel<\/h2>\n\nFerritic stainless steels<\/a> are like their martensitic counterparts in terms of corrosion-resistivity, albeit with significantly decreased nickel and elevated levels of chromium. This decreases the cost of the alloy alongside the material\u2019s proclivity towards stress corrosion cracking. Yet it still cannot be hardened by conventional thermal processing.<\/p>\nProcess annealing is used to impart maximum ductility and corrosion resistance at the expense of hardness. This follows a similar process to martensitic annealing albeit with shorter recrystallization periods at lower temperatures of approximately 760 \u2013 955\u00b0C.<\/p>\n<\/div>\n
Heat Treatment of Martensitic Stainless Steel<\/h2>\n\nMartensitic stainless steels<\/a> could be described as the most conventional alloy in terms of its hardenability properties. They typically display a proportional hardenability to carbon (C) content and are subsequently suited to standard austenitizing, quenching, and tempering. The alloy is heated to a point above its critical temperature long enough for recrystallization to occur. This causes a decrease in ductility in favor of hardness, up to a maximum point. It is then quenched and tempered to achieve the optimal intersection of workability, corrosion resistance, and hardness.<\/p>\n<\/div>\n\n- \n
![\"Stainless](\"\/wp-content\/uploads\/2025\/04\/Marine_Surface_Hardening_parts_Expanite.png\")
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Don\u2019t Just Take Our Word for It!<\/h2>\n\nDon\u2019t forget, Expanite can increase the wear resistance of ferritic and martensitic stainless steels beyond what can be achieved with classic heat treatments \u2013 while maintaining or even improving corrosion resistance. Click below for more:<\/span><\/p>\n<\/div>\n\n- \n
![\"heat](\"\/wp-content\/uploads\/2025\/01\/arrow-dot.svg\")
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Heat treatment Test Results<\/h3>\n
The results on stainless steel after Expanite heat treatment <\/p>\n
Learn more<\/a><\/p>\n<\/li>\n- \n
<\/p>\n
Heat treatment Whitepapers<\/h3>\n
Get the latest insight about heat treatment of stainless steel<\/p>\n
The basics of this group of classic heat treatments is that the stainless steel components are heated to the appropriate hardening temperature of the alloy (usually between 800-900\u00b0C), held at temperature, then “quenched” (rapidly cooled) in a protective gas. This is followed by tempering (a soak at a lower temperature) which develops the final mechanical properties and relieves stresses. The processes are typically relevant for ferritic and martensitic stainless steels.<\/p>\n<\/div>\n
The list of specialty heat treatment processes that Expanite can perform is principally never-ending; some of the major categories include case hardening, tempering, solution, and annealing treatments.<\/p>\n<\/div>\n
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Heat Treatment of Ferritic Stainless Steel<\/h2>\n\nFerritic stainless steels<\/a> are like their martensitic counterparts in terms of corrosion-resistivity, albeit with significantly decreased nickel and elevated levels of chromium. This decreases the cost of the alloy alongside the material\u2019s proclivity towards stress corrosion cracking. Yet it still cannot be hardened by conventional thermal processing.<\/p>\nProcess annealing is used to impart maximum ductility and corrosion resistance at the expense of hardness. This follows a similar process to martensitic annealing albeit with shorter recrystallization periods at lower temperatures of approximately 760 \u2013 955\u00b0C.<\/p>\n<\/div>\n
Heat Treatment of Martensitic Stainless Steel<\/h2>\n\nMartensitic stainless steels<\/a> could be described as the most conventional alloy in terms of its hardenability properties. They typically display a proportional hardenability to carbon (C) content and are subsequently suited to standard austenitizing, quenching, and tempering. The alloy is heated to a point above its critical temperature long enough for recrystallization to occur. This causes a decrease in ductility in favor of hardness, up to a maximum point. It is then quenched and tempered to achieve the optimal intersection of workability, corrosion resistance, and hardness.<\/p>\n<\/div>\n\n- \n
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Don\u2019t Just Take Our Word for It!<\/h2>\n\nDon\u2019t forget, Expanite can increase the wear resistance of ferritic and martensitic stainless steels beyond what can be achieved with classic heat treatments \u2013 while maintaining or even improving corrosion resistance. Click below for more:<\/span><\/p>\n<\/div>\n\n- \n
<\/p>\n
Heat treatment Test Results<\/h3>\n
The results on stainless steel after Expanite heat treatment <\/p>\n
Learn more<\/a><\/p>\n<\/li>\n- \n
<\/p>\n
Heat treatment Whitepapers<\/h3>\n
Get the latest insight about heat treatment of stainless steel<\/p>\n
Ferritic stainless steels<\/a> are like their martensitic counterparts in terms of corrosion-resistivity, albeit with significantly decreased nickel and elevated levels of chromium. This decreases the cost of the alloy alongside the material\u2019s proclivity towards stress corrosion cracking. Yet it still cannot be hardened by conventional thermal processing.<\/p>\n Process annealing is used to impart maximum ductility and corrosion resistance at the expense of hardness. This follows a similar process to martensitic annealing albeit with shorter recrystallization periods at lower temperatures of approximately 760 \u2013 955\u00b0C.<\/p>\n<\/div>\n Martensitic stainless steels<\/a> could be described as the most conventional alloy in terms of its hardenability properties. They typically display a proportional hardenability to carbon (C) content and are subsequently suited to standard austenitizing, quenching, and tempering. The alloy is heated to a point above its critical temperature long enough for recrystallization to occur. This causes a decrease in ductility in favor of hardness, up to a maximum point. It is then quenched and tempered to achieve the optimal intersection of workability, corrosion resistance, and hardness.<\/p>\n<\/div>\n Don\u2019t forget, Expanite can increase the wear resistance of ferritic and martensitic stainless steels beyond what can be achieved with classic heat treatments \u2013 while maintaining or even improving corrosion resistance. Click below for more:<\/span><\/p>\n<\/div>\n The results on stainless steel after Expanite heat treatment <\/p>\n Learn more<\/a><\/p>\n<\/li>\n Get the latest insight about heat treatment of stainless steel<\/p>\nHeat Treatment of Martensitic Stainless Steel<\/h2>\n
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<\/p>\nHeat treatment Test Results<\/h3>\n
<\/p>\nHeat treatment Whitepapers<\/h3>\n
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