321 Stainless Steel

321 stainless steel is used for outdoor machinery in the chemical, coal, and petroleum industries where high resistance to grain boundary corrosion is required, as well as for heat-resistant parts in construction materials and components that are difficult to heat treat.

Chemical Composition

Sulfur: 0.030

Nickel: $9.00 - $12.00

Chromium: 17.00-19.00

Titanium: 5C-0.70

Austenitic stainless steel is equivalent to China's 1Cr18Ni9Ti.

Brand in the USA: 321, S32100, TP321

Japanese Brand: SUS321

British Brand: 304S12, 321920

German Brand: X10CrNiTi189

Performance

The 321 stainless steel sheet contains titanium as a stabilizing element, yet it is also a high-temperature-resistant steel, significantly outperforming the 316L stainless steel sheet in terms of high-temperature properties. In various concentrations and temperatures of organic and inorganic acids, particularly in oxidizing media, 321 stainless steel sheet exhibits excellent wear and corrosion resistance, making it suitable for manufacturing liners for wear-resistant acid containers and equipment, as well as for conveying pipelines.

321 stainless steel sheet is an austenitic type Ni-Cr-Mo stainless steel plate, with performance very similar to 304 stainless steel plate. However, due to the addition of titanium metal, it boasts enhanced resistance to grain boundary corrosion and high-temperature strength. The inclusion of titanium metal effectively controls the formation of chromium carbide.

321 stainless steel sheet boasts superior high-temperature stress rupture and creep resistance properties compared to 304 stainless steel sheet.