Chemical composition and mechanical properties of Chinese low-temperature pressure vessel steel 09MnNiDR
09MnNiDR Approximate Grade Lookup Table
Chemical Composition
| Grade | Chemical Composition(Quality Fraction)/% | ||||||||||
| C | Si | Mn | Ni | Mo | V | Nb | Alt | N | P | S | |
| 09MnNiDR | ≤0.12 | 0.15~0.50 | 1.20~1.60 | 0.30~0.80 | ≤0.08 | 一 | ≤0.040 | ≥0.020 | ≤0.012 | ≤0.015 | ≤0.005 |
Mechanical properties and processing properties
| Grade | Delivery status | Thickness mm | Tensile test | Impact test | 180°Bending test b=2a | |||
| Tensile strengthRm/MPa | Lower yield strength ReL/MPa |
Elongation after fracture A/% | Temperature<℃ | Impact absorption energyKV₂/J | ||||
| ≥ | ≥ | |||||||
| 09MnNiDR | Normalizing or Normalizing and tempering |
6～16 | 440～570 | 300 | 23 | -70 | 60 | D=2a |
| >16～36 | 430～560 | 280 | ||||||
| >36～60 | 430~560 | 270 | ||||||
| >60～80 | 420～550 | 260 | ||||||
| >80～120 | 420～550 | 260 | -60 | 60 | ||||