What Material Is 321 And What Brand Does It Correspond To in China?

What material is 321 and what brand does it correspond to in China?

321 stainless steel is Ni-Cr-Mo Austenitic stainless steel, which is also a derivative of 304 stainless steel.

321 stainless steel and 304 stainless steel are not very different in corrosion resistance, but in the heat resistance of 500-600 degrees Celsius, most of the 321 stainless steel is used, because 321 stainless steel has titanium (Ti) as a stabilizing element, so that it has better resistance to intergranular corrosion and high temperature strength, and effectively control the formation of chromium carbide.

At the same time, it is also a heat-strong steel, so that 321 stainless steel has high temperature stress breaking performance and high temperature creep resistance, and the stress mechanical properties are better than 304 stainless steel. Therefore, it can be used to manufacture the linings of wear-resistant acid containers and wear-resistant equipment, and conveying pipes (such as petroleum exhaust gas combustion pipes, engine exhaust pipes, diesel engine muffler parts, heating element tubes, braid or welded screens for high-temperature mineral processing, furnace pipes and spiral welded pipes for dryers).