321 stainless steel

Before introducing the chemical composition of 321 stainless steel, SHANDONG OK STEEL CO., LTD will briefly talk about the characteristics of 321 stainless steel.

321 stainless steel is a derivative of 304 stainless steel. There is not much difference in corrosion resistance. However, in the heat-resistant working condition of 500-600 degrees Celsius, 321 stainless steel is mostly used because 321 stainless steel contains titanium (Ti ) exists as a stabilizing element, which effectively controls the formation of chromium carbide. It is also a heat-strength steel type, which makes 321 stainless steel have better resistance to intergranular corrosion and high-temperature strength, so it can be used to manufacture wear-resistant acid Linings and pipelines for containers and wear-resistant equipment. But Wuxi Zhongxing Yide does not recommend 321 stainless steel as decorative parts.

The chemical composition of 321 stainless steel is as follows:

SUS 321 stainless steel heat treatment:

①Hardness HBW≤: solid solution 187, hardness HRB≤: 90, ②Heating temperature: 920~1150, ③Heating method: quick cooling.

SUS 321 stainless steel application field: used for high-temperature or hydrogen corrosion-resistant materials. Manufacture parts used under 400-900 degree corrosion conditions, high temperature welded structural parts. SUS 321 stainless steel has excellent high-temperature stress rupture performance and high-temperature creep resistance. Its stress mechanical properties are better than 304 stainless steel, and it is suitable for welding parts used at high temperatures.

SUS 321 stainless steel application

Linings and pipes for wear-resistant acid containers and wear-resistant equipment; petroleum waste gas combustion pipes; engine exhaust pipes; boiler shells, heat exchangers, furnace components; diesel engine mufflers; boiler pressure vessels; chemical transport vehicles; expansion joints; furnace tubes, Spiral welded pipe for dryers; aircraft. The above is the application of SUS 321 stainless steel. If you want to know more about stainless steel, please continue to pay attention to SHANDONG OK STEEL CO., LTD, which is a professional supplier of various steel products, and will often update news about steel, and give you popular scientific information about steel.