GB 713 Q370R Introduce
GB 713 Q370R is a type of carbon steel that is widely used in industrial applications. This steel is renowned for its excellent thermal properties, including a high melting point, high thermal conductivity and thermal stability. These properties are attributable to its chemical composition, the manufacturing process and heat treatment. GB 713 Q370R is used in a range of industrial applications, including the production of heat exchangers, boilers, pressure vessels, and other components.
Smelting temperature:1726°C - 1634°C
Application:Steel plate for boiler
GB 713 Q370R Material Chemical Composition
The chemical composition of the GB 713 Q370R steel are as follows:
| Element | Min | Max |
|---|---|---|
| Aluminum (Al) | 0.0200 | - |
| Copper (Cu) | - | 0.2500 |
| Vanadium (V) | 0.1500 | 0.3000 |
| Silicon (Si) | - | 0.5500 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Niobium (Nb) | 0.0150 | 0.0500 |
| Manganese (Mn) | 1.2000 | 1.6000 |
| Carbon (C) | - | 0.1800 |
| Nickel (Ni) | - | 0.3000 |
| (Cr+Cu+Mo+Ni) | - | 0.7000 |
| Chromium (Cr) | - | 0.3000 |
| Molybdenum (Mo) | - | 0.0800 |
| Copper (Cu) | - | 0.3000 |
| Vanadium (V) | - | 0.0500 |
| Titanium (Ti) | - | 0.0300 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0200 |
| Manganese (Mn) | 1.2000 | 1.7000 |
| Carbon (C) | - | 0.1800 |
GB 713 Q370R Material Mechanical Properties
The mechanical properties of the GB 713 Q370R steel are as follows:
| YieldRp0.2 | ≤ 737 (MPa) |
| TeileRm | ≤ 797 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 433 |
GB 713 Q370R Material Thermal Properties
The thermal performance parameters of the GB 713 Q370R steel are as follows:
| Temperature (°C) | 14 | 447 | 945 |
| Modulus of elasticity (GPa) | - | 798 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 414 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.43 | - | - |
| Deity (kg/dm³) | - | - | 311 |
| Poisson’s coefficient, ν | - | - | 132 |