Stainless steel is widely used in various industries, according to the steel models of different uses, before we said a lot of the stainless steel cutlery steel types of knowledge, today we're going to comprehensive understanding about the types of stainless steel in various industries differences and the application.
Model 301 - good ductility, used for forming products. It can be quickly hardened by machining. Good welding. Wear resistance and fatigue strength is better than 304 stainless steel.
Type 302 - 304 with corrosion resistance, due to the relatively high carbon intensity.
Model 303 by adding a small amount of sulfur and phosphorus to make it more easy to cut 304.
Type 304 - types of general; containing 8% - 10% nickel composition, domestic general, also known as the 18-8, said containing 8% nickel, and in the world, mostly nickel containing 10, so also known as 18-10, better stainless steel tableware and kitchen utensils are using this steel.
Model 309 has better temperature resistance than 304.
Type 316 - following the 304, the second most widely used of steel, mainly for the food industry and surgical equipment, adding Mo to obtain a special anti corrosion structure, much higher cost than 304, it is generally not used in the food and beverage industry, more and more applications in medical.
No. 321 - except for the addition of titanium element to reduce the risk of weld corrosion performance than other similar 304.
400 series - Ferritic and martensitic stainless steel
No. 408 - good heat resistance, corrosion resistance is weak, 11% Cr, 8% Ni.
Type 409 - the most inexpensive models (Ying Mei), usually used in automobile exhaust pipe, is a ferritic stainless steel (Ge Gang).
410 types of martensite (high strength steel), good wear resistance, corrosion resistance is poor.
Type 416 - sulfur added to improve the processing properties of materials.
Type 420 - "cutting class" martensitic steel, similar to Brandt's first high chromium stainless steel this. It is also used in surgical tools, food grade stainless steel, in our daily life by using this tool steel.
Type 430 ferritic stainless steel, decoration, such as for car accessories. Good formability, but heat resistance and corrosion resistance worse.
The model 440 - high strength steel cutting tools, including carbon is a little bit higher, after appropriate heat treatment can obtain a higher yield strength, hardness can reach 58 HRC, which belongs to the hard stainless steel column. The most common application example is the "razor blade". There are three commonly used models: 440A, 440B, 440C, and 440F (easy processing).
500 series - resistant chromium alloy steel.
600 series - Martensite Precipitation Hardening Stainless steel.
Type 630 - the most commonly used precipitation hardening stainless steel type, also known as 17-4, 17%Cr, 4%Ni.