Stainless steel grade introduction: ASTM304H
1. Summary
The content of C is increased on the basis of 304, and the content of nickel and chromium remains unchanged, which improves the stability of austenite, and improves the low-temperature stability and impact resistance of stainless steel.
2. Scope of application
Low-temperature container liner, etc.
3. Chemical composition (ASTM A240- A 240M) (wt%)
| Chemical composition | C | Si | Mn | P | S | Cr | Ni | N |
|---|---|---|---|---|---|---|---|---|
Standard | 0.04~0.10 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.00~20.00 | 8.00~10.50 |
4. Performance (ASTM A240- A 240M)
Distinguish | Mechanical properties | Processing performance | ||||||
Ys (Mpa) | Ts (Mpa) | El (%) | HRB | Fatigue limit (Mpa) | r | LDR | Er（mm ） | |
Standard | ≥205 | ≥515 | ≥ 40 | ≤ 92 | – | – | – | – |
5. Heat treatment
Solution treatment: 1010~1150℃.
6. Use status
1) Annealing and solid solution state
2) No. 1, 2B, 2D and various other surface treatment states