Standard of austenitic 321 stainless steel plate: AISI, ASTM

Standard of austenitic 321 stainless steel plate: AISI, ASTM

Model: 321

UNS number: S32100

●321 features and applications:

321 stainless steel is equivalent to domestic brand 0Cr18Ni10Ti, 321 stainless steel is Ni-Cr-Mo austenitic stainless steel, its performance is very similar to 304, but due to the addition of titanium metal, so that it has better grain boundary corrosion resistance and high temperature strength. Due to the addition of titanium metal, it effectively controls the formation of chromium carbide. 321 stainless steel faces a higher Stress Rupture and higher temperature Creep Resistance than 304 stainless steel.

●321 Chemical composition ① :

Carbon C: 0.08 or less

Manganese Mn: 2.00 or less

Si Si: 0.75 or less

Chromium Cr: 17.0 ~ 19.0

Ni Ni (2) : 9 ~ 12.0

P P: 0.045 or less

S: sulfur 0.03 or less

Ti Ti: 5 * (C + N) ~ 0.70

Note: ① All single values are high unless otherwise indicated; (2) For some pipe making process, some types of austenitic stainless steel nickel content slightly shown in the table; (3) random; ④ The high Ta content was 0.10%; ⑤ High content was 0.75%; ⑥ The high content is 0.70%.