Application scope of different material round steel

The scope of application of different materials round steel stainless steel round bar material: 304,304 L, 321,316,316 L, 310 S, 630, 1 Cr13, 2 Cr13, 3 Cr13, 1 Cr17 Ni2, dual phase steel, antibacterial steel and other materials, mainly used in: petroleum, electronics , Chemicals, pharmaceuticals, textile, food, machinery, construction, nuclear power, aerospace, military and other industries, but depending on the material, its application is also slightly different.
200 Series—Chromium-Nickel-Manganese Austenitic Stainless Steel Series 300—Chromium-Nickel Austenitic Stainless Steel 301—Good ductility for molding products. It can also be hardened by speed. Good weldability. The wear resistance and fatigue strength are better than 304 stainless steel.
302—Corrosion resistance is the same as 304. The strength is better due to the relatively high carbon content.
303 - It is relatively processed by adding a small amount of sulfur and phosphorus.
304 - 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 type of steel, mainly used in the food industry and surgical equipment, added 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.
321 - Other properties are similar to 304 except that the addition of titanium reduces the risk of material weld rust.
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—Sulfur added 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).

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