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302—Corrosion resistance is the same as 304. The strength is better due to the relatively high carbon content.
303 - It is easier to cut than 304 by adding a small amount of sulfur and phosphorus.
304—Universal model; that is, 18/8 stainless steel. The GB grade is 0Cr18Ni9.
309 - better temperature resistance than 304.
316—Since 304, the second most widely used steel grade, mainly used in the food industry and surgical equipment, is the addition of molybdenum to obtain a special structure that resists corrosion. Because it has better resistance to chloride corrosion than 304, it is also used as "marine steel". SS316 is usually used in nuclear fuel recovery devices. 18/10 grade stainless steel also generally meets this application level.
Model 321 - Other properties are similar to 304 except that the addition of titanium reduces the risk of corrosion of the weld material.
Series 400 - ferrite and martensitic stainless steel 408 - good heat resistance, weak corrosion resistance, 11% Cr, 8% Ni.
409 - The cheapest model (British and American), commonly used as automotive exhaust pipe, is a ferritic stainless steel (chrome steel).
410—Martensite (high strength chrome steel), good wear resistance, poor corrosion resistance.
416 - Added sulfur improves the material's processability.
420—"Blade-grade" martensitic steel, similar to Brinell's high chromium steel, the earliest stainless steel. Also used for surgical tools, can do very bright.
430—ferritic stainless steel, decorative, for example for automotive accessories. Good formability, but poor temperature resistance and corrosion resistance.
440—High-strength cutting tool steel with slightly higher carbon content. After appropriate heat treatment, it can obtain higher yield strength, and the hardness can reach 58HRC, which is among the hardest stainless steels. The most common application example is the "razor blade." There are three commonly used models: 440A, 440B, 440C, in addition to 440F (easy processing type).
Series 500 - Heat-resistant chromium alloy steel.
Series 600 - martensitic precipitation hardened stainless steel.
630—The most commonly used precipitation-hardening stainless steel model, also commonly called 17-4; 17% Cr, 4% Ni.
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51 steel pipe network for you to introduce the stainless steel brand in detail
201 Series - Chromium-Nickel-Manganese Austenitic Stainless Steel Series 300 - Chromium-Nickel Austenitic Stainless Steel 301 - Good ductility for use in forming products. It can also be hardened by mechanical processing. Good weldability. The wear resistance and fatigue strength are better than 304 stainless steel.