13MnNiMoR is a low alloy high strength steel with specific chemical composition and excellent comprehensive performance. In China, it is widely produced and used in the manufacture of various pressure vessels and large structural components. The name of this steel consists of the proportion of its contained chemical composition, and the abbreviation of its performance characteristics, which fully demonstrates its unique composition and excellent performance.
Chemical Composition:
| C | Si | Mn | Cr | Ni | Mo | Nb | P | S |
| ≤0.15 | 0.15-0.50 | 1.20-1.60 | 0.20-0.40 | 0.60-1.00 | 0.20-0.40 | 0.005-0.020 | ≤0.020 | ≤0.010 |
Mechanical Properties:
| Tensile Strength R/(N/㎡) | Yield Strength R/(N/㎡) | Elongation A/% | Temperature /℃ | Sharpy Impact KV2/J | 180° Bend Test and Diameter(b≥35mm | |
| 30-100 | 570-720 | ≥390 | 18 | ≥0 | 41 | d=3a |
Because 13MnNiMoR steel has excellent mechanical properties, low-temperature toughness and corrosion resistance, it is widely used in the manufacture of various types of pressure vessels and large structural components. These parts need to withstand high intensity working loads, the material strength, toughness, fatigue life and other performance requirements. For example, it can be used in the manufacture of high-strength bolts, nuts and other fasteners, these fasteners work in high temperature, high pressure and other harsh environments, the corrosion resistance of its materials and high temperature performance has high requirements. Meanwhile, in the process of manufacturing various types of pressure vessels and large structural components, the excellent welding performance and processing performance of 13MnNiMoR steel makes it possible to meet a variety of complex manufacturing requirements.
