GB 713 14Cr1MoR Introduce
GB 713 14Cr1MoR is a special steel grade designed and manufactured by the China Iron and Steel Research Institute Group (CISRI). It is a medium carbon structural steel usually applied in boiler and pressure vessels. GB 713 14Cr1MoR is a kind of low alloy steel, which is characterized by high strength, good ductility and resistance to corrosion. It also has a low thermal expansion coefficient, good toughness and high hardness. This steel is also well known for its excellent welding performance and its convenience for machining.
Smelting temperature:1254°C - 1536°C
Application:Steel plate for boiler
GB 713 14Cr1MoR Material Chemical Composition
The chemical composition of the GB 713 14Cr1MoR steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.1500 | 0.3000 |
| Copper (Cu) | - | 0.2500 |
| Aluminum (Al) | 0.0200 | - |
| Silicon (Si) | 0.5000 | 0.8000 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0200 |
| Molybdenum (Mo) | 0.4500 | 0.6500 |
| Manganese (Mn) | 0.4000 | 0.6500 |
| Chromium (Cr) | 1.1500 | 1.5000 |
| Carbon (C) | 0.0500 | 0.1700 |
| Nickel (Ni) | - | 0.3000 |
| Copper (Cu) | - | 0.3000 |
| Carbon (C) | - | 0.1700 |
GB 713 14Cr1MoR Material Mechanical Properties
The mechanical properties of the GB 713 14Cr1MoR steel are as follows:
| YieldRp0.2 | ≤ 794 (MPa) |
| TeileRm | ≤ 579 (MPa) |
| ImpactKV/Ku | 23(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 32% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 243 |
GB 713 14Cr1MoR Material Thermal Properties
The thermal performance parameters of the GB 713 14Cr1MoR steel are as follows:
| Temperature (°C) | 22 | 248 | 554 |
| Modulus of elasticity (GPa) | - | 246 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 11.3 | 21.2 |
| Specific thermal capacity (J/kg·°C) | - | 421 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 242 |
| Poisson’s coefficient, ν | - | - | 222 |