321 stainless steel seamless tube in China
We are professional manufacturer for 321 stainless steel seamless tube in China. Stainless steel tube has different applications in different district. The chemical composition and physical property of 321 stainless steel seamless tube:
chemical composition:
C ：≤0.08
Si：≤1.00
Mn：≤2.00
S ：≤0.030
P ：≤0.035
Cr：17.00～19.00
Ni：9.00～12.00
Ti：≥5×C％
physical properties:
tensile strength σb (MPa)：≥520
yield strength σ0.2 (MPa)：≥205
hardness ：≤187HB;≤90HRB;≤200HV
321 stainless steel is Ni-Cr-Mo type austenitic stainless steel, its performance is very similar to the 304, but because of the addition of titanium, it has better resistance to grain boundary corrosion and high temperature strength.
321 stainless steel seamless tube is applied to manufacture various structures of low and medium pressure boiler superheated steam pipe, superheated steam pipe, boiling water pipe and boiler flue tube, pipe and brick arch tubes of high quality carbon steel hot rolling and cold drawing (rolling) seamless steel tube.
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