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Item | Hot rolled steel billet |
Types | Square steel billet, flat steel billet |
Standard | GB, JIS, ASTM |
Grade | Q195, Q215, Q235, Q275, Q345, HRB335, 20MnSi, 3SP, 5SP |
Standard | C(%) | Mn(%) | S(%) | P(%) | Si(%) |
Q195 | 0.06-0.12 | 0.25-0.50 | ≤0.040 | ≤0.035 | ≤0.30 |
Q235 | 0.12-0.22 | 0.25-0.55 | ≤0.045 | ≤0.045 | ≤0.35 |
Q275 | 0.12-0.22 | 0.60-0.80 | ≤0.045 | ≤0.045 | ≤0.35 |
20MnSi | 0.17-0.25 | 1.00-1.60 | ≤ 0.050 | ≤ 0.050 | 0.40-0.80 |
3SP | 0.14-0.22 | 0.30-0.50 | ≤ 0.050 | ≤ 0.040 | 0.05-0.15 |