Stainless Steel Product Series · 200 Series: austenitic chromium
nickel-manganese alloys · 300 Series: austenitic chromium
nickel alloys Type 301: highly ductile, for formed products. Also hardens rapidly during mechanical working. Type 303: free machining version of 304 via addition of sulfur Type 304: the most common; the classic 18/8 stainless steel. Type 316: the next most common; for food and surgical stainless steel uses; Alloy addition of molybdenum prevents specific forms of corrosion. 316 steel is more resistant to corrosion than 18-8 stainless steels. 316 steel is used in the handling of certain food and pharmaceutical products where it is often required in order to minimize metallic contamination. 316 steel is also known as “marine grade” stainless steel due to its increased ability to resist saltwater corrosion compared to type 304. SS316 is often used for building nuclear reprocessing plants. | 400 Series: ferritic and martensitic chromium alloys Type 408: heat-resistant; poor corrosion resistance; 11% chromium, 8% nickel. Type 409: cheapest type; used for automobile exhausts; ferritic (iron/chromium only). Type 410: martensitic (high-strength iron/ chromium). Type 416: the most machinable stainless steel; achieved by the addition of extra sulfur which reduces corrosion resistance. Often used for “stainless” rifle barrels Type 420: “Cutlery Grade” martensitic; similar to the Brearley’s original “rustless steel”. Also known as “surgical steel”. Type 430: decorative, e.g., for automotive trim; ferritic. Type 440: a higher grade of cutlery steel, with more carbon in it, which allows for much better edge retention when the steel is heat treated properly. 500 Series: heat resisting chromium alloys 600 Series: martensitic precipitation hardening alloys Type 630: most common PH stainless, better known as 17-4; 17% chromium, 4% nickel The technical table below should be a stainless steel download. |