Chemical&Mechanical parameters
Grade | C | Mn | Si | Cr | Mo | S | P |
20G | 0.17~0.23 | 0.35~0.65 | 0.17~0.37 | — | — | ≤0.020 | ≤0.025 |
20MnG | 0.17~0.23 | 0.70~1.00 | 0.17~0.37 | — | — | ≤0.020 | ≤0.025 |
25MnG | 0.22~0.29 | 0.70~1.00 | 0.17~0.37 | — | — | ≤0.020 | ≤0.025 |
12CrMoG | 0.08~0.15 | 0.40~0.70 | 0.17~0.37 | 0.40~0.70 | 0.40~0.55 | ≤0.020 | ≤0.025 |
15CrMoG | 0.12~0.18 | 0.40~0.70 | 0.17~0.37 | 0.80~1.10 | 0.40~0.55 | ≤0.020 | ≤0.025 |
SA-210A1 | ≤0.27 | ≤0.93 | ≥0.10 | — | — | ≤0.035 | ≤0.035 |
SA-210C | ≤0.35 | 0.29~1.06 | ≥0.10 | — | — | ≤0.035 | ≤0.035 |
SA-213T2 | 0.10~0.20 | 0.30~0.61 | 0.10~0.30 | 0.50~0.81 | 0.44~0.65 | ≤0.025 | ≤0.025 |
SA-213T12 | 0.05~0.15 | 0.30~0.61 | ≤0.50 | 0.80~1.25 | 0.44~0.65 | ≤0.025 | ≤0.025 |
Grade | T(MPa) | Y(MPa) | E(%) | Hardness |
20G | 410~550 | 245 | ≥24 | — |
20MnG | ≥415 | ≥240 | ≥22 | — |
25MnG | ≥485 | ≥275 | ≥20 | — |
12CrMoG | 410~560 | ≥205 | ≥21 | — |
15CrMoG | 440~640 | ≥235 | ≥21 | — |
SA-210C | ≥415 | ≥255 | ≥30 | ≤143HBW |
SA-210A1 | ≥485 | ≥275 | ≥30 | ≤179HBW |
SA-213T2 | ≥415 | ≥205 | ≥30 | ≤163HBW |
SA-213T12 | ≥415 | ≥220 | ≥30 | ≤163HBW |