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Specification of Stainless Steel 304

Specification of Stainless Steel 304

In this article, experts from Mirach Metallurgy Co.,Limited share the detail information of stainless steel 304. If you are looking for stainless steel 304 and related products, contact Mirach Metallurgy Co.,Limited for detail.

Chemistry  by Weight

Type 302 Type 304 Type 304L Type 305
Fe 64.99-74%
Cr 17% 18% 18% 17%
Ni 8% 8% 8% 10.50%
Mn 2% 2% 2% 2%
N 0.10% 0.10% 0.10%
S 0.03% 0.03% 0.03% 0.03%
C 0.15% 0.08% 0.03% 0.12%
Si 0.75% 0.75% 0.75% 0.75%
P 0.045% 0.045% 0.045% 0.045%

Possible Alternative Grades

Possible alternative grades to grade 304 stainless steels are given in table 5.

 Possible alternative grades to 304 grade stainless steel


Why it might be chosen instead of 304


A higher work hardening rate grade is required for certain roll formed or stretch formed components.


Lower work hardening rate is needed for cold forging of screws, bolts and rivets.


Higher machinability needed, and the lower corrosion resistance, formability and weldability are acceptable.


Higher resistance to pitting and crevice corrosion is required, in chloride environments


Better resistance to temperatures of around 600-900°C is needed…321 has higher hot strength.


A lower cost is required, and the reduced corrosion resistance and resulting discolouration are acceptable.


A lower cost is required, and the reduced corrosion resistance and fabrication characteristics are acceptable.