Stainless steel 455 is a martensitic, age-hardenable alloy yielding strength characteristics that are roughly 3 times the strength of standard 304 stainless. 445 resists staining in normal atmospheres and shows no corrosion in fresh water, good ductility and toughness. This alloy is extremely stable during heat-treating making it able to be machined to close tolerance prior to aging.
Of the 400 series of stainless steels, 400C has the highest carbon content and moderate corrosion resistance and can heat-treat to the highest harness of RC 60. (In contrast, 416 is normally heat treated to RC 26/32)
15-5 is a martensitic precipitation-hardening stainless steel that provides high strength, good corrosion resistance, good mechanical properties at temperatures up to 600°F (316°C) and good toughness in both the longitudinal and transverse directions in both base metal and welds. Alloy 15-5 is the ferrite-free version of Type 17-4 stainless steel. Both alloys are widely used […]
17-4, also known as 630 stainless, can be heat treated to high levels of strength and hardness, and good for machining and is corrosion resistant. Often used in petroleum and chemical industries, as well as in aircraft parts.
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