Stainless Steel Classification and Chemical Composition
Stainless Steel Classification and Chemical Composition
Stainless Steel Classification
Stainless steel is classified into three main types:Stainless Steel Classification and Chemical
- Austenitic stainless steel
- Ferritic stainless steel
- Martensitic stainless steel
Austenitic Stainless Steel Pipes
The seamless stainless steel pipes we produce, including round, square, rectangular, and custom thick-walled pipes, are made from austenitic stainless steel. Below are the chemical compositions of commonly used materials:
201 Stainless Steel Pipe
- C: ≤0.15%
- Si: ≤1.00%
- Mn: 5.50-7.50%
- P: ≤0.060%
- S: ≤0.030%
- Ni: 3.50-5.30%
- Cr: 16.00-18.00%
- N: ≤0.25%
301 Stainless Steel Pipe
- C: ≤0.15%
- Si: ≤1.0%
- Mn: ≤2.0%
- Cr: 16.0-18.0%
- Ni: 6.0-8.0%
- S: ≤0.03%
- P: ≤0.045%
304 Stainless Steel Pipe
- C: ≤0.08%
- Si: ≤1.0%
- Mn: ≤2.0%
- Cr: 17.0-19.0%
- Ni: 8.0-10.0%
- S: ≤0.03%
- P: ≤0.045%
316L Stainless Steel Pipe
- C: ≤0.03%
- Si: ≤1.0%
- Mn: ≤2.0%
- Cr: 16.0-18.0%
- Ni: 10.0-14.0%
- S: ≤0.03%
- P: ≤0.045%
- Mo: 2.00-3.00%
2520 Stainless Steel Pipe
- C: ≤0.08%
- Si: ≤1.0%
- Mn: ≤2.0%
- Cr: 24.0-26.0%
- Ni: 19.0-22.0%
- S: ≤0.03%
- P: ≤0.045%
321 Stainless Steel Pipe
- C: ≤0.12%
- Si: ≤1.0%
- Mn: ≤2.0%
- Cr: 16.0-19.8%
- Ni: 8.0-10.0%
- S: ≤0.03%
- P: ≤0.035%
- Mo: 2-3%
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