GB 1591 12MnV Introduce
GB 1591 12MnV, or the Chinese Standard of hot-rolled steel, is a widely used material for construction and engineering purposes. With its high strength, hardness, and ductility, GB 1591 12MnV steel is used in a variety of structures, from buildings to bridges. As such, it's important to understand the mechanical properties of this steel in order to create durable and reliable structures.
Smelting temperature:1166°C - 1241°C
Application:Low alloy high strength structural steel
GB 1591 12MnV Material Mechanical Properties
The mechanical properties of the GB 1591 12MnV steel are as follows:
| YieldRp0.2 | ≤ 589 (MPa) |
| TeileRm | ≤ 891 (MPa) |
| ImpactKV/Ku | 14(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 434 |
GB 1591 12MnV Material Thermal Properties
The thermal performance parameters of the GB 1591 12MnV steel are as follows:
| Temperature (°C) | 23 | 852 | 241 |
| Modulus of elasticity (GPa) | - | 294 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 132 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 132 |
| Poisson’s coefficient, ν | - | - | 323 |
GB 1591 12MnV Material Machining Technology
There are many reasons why GB 1591 12MnV steel is often chosen for various operations. Firstly, it is an excellent choice for many automotive applications due to its good formability, weldability, and strength. Additionally, it offers good machinability, which makes it suitable for a wide range of machining operations. Additionally, this type of steel also has a high heat resistance, so it can withstand extreme temperatures without losing its properties. Finally, it is relatively inexpensive and easy to obtain, making it a cost-effective choice for many applications.