Chemical composition and mechanical properties of Chinese low-temperature pressure vessel steel 07Ni5DR
07Ni5DR Approximate Grade Lookup Table
Chemical Composition
| Grade | Chemical Composition(Quality Fraction)/% | |||||||||||
| C | Si | Mn | Ni | S | Cr | Cu | Mo | V | Nb | Alt | ||
| ≤ | ≤ | ≥ | ||||||||||
| 07Ni5DR | 0.10 | 0.10~0.35 | 0.30~0.80 | 4.75~5.25 | 0.015 | 0.005 | 0.25 | 0.35 | 0.10 | 0.05 | 0.08 | 0.015 |
Mechanical properties and processing properties
| Grade | Thickness mm | Tensile test | V-type impact test | 180°Bending test b=2a | |||
| Lower yield strength ReL/MPa |
Tensile strength Rm/MPa | Elongation after fracture A/% | Temperature℃ | Impact absorption energy KV₂/J | |||
| 07Ni5DR | 5～30 | ≥370 | 530～700 | ≥20 | -120 | ≥80 | D=3a |
| >30～50 | ≥360 | ||||||
| >50～80 | ≥350 | ||||||