GB/T 1299 MnCrWV Introduce
Manganese and silicon both play a role in strengthening the GB/T 1299 MnCrWV steel alloy. They both contribute to improved tensile strength, with manganese being slightly more effective. They also help reduce the amount of carbon in the steel, and silicon plays a role in reducing the risk of brittleness in the steel.
Smelting temperature:1233°C - 1793°C
Application:Alloy tool steel
GB/T 1299 MnCrWV Material Chemical Composition
The chemical composition of the GB/T 1299 MnCrWV steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nickel (Ni) | - | 0.2500 |
| Copper (Cu) | - | 0.2500 |
| Sulfur (S) | - | 0.0200 |
| PhOsphorus (P) | - | 0.0300 |
| Vanadium (V) | 0.0500 | 0.1500 |
| Tungsten (W) | 0.5000 | 0.7000 |
| Chromium (Cr) | 0.5000 | 0.7000 |
| Manganese (Mn) | 1.0500 | 1.3500 |
| Silicon (Si) | 0.1000 | 0.4000 |
| Carbon (C) | 0.9000 | 1.0500 |
GB/T 1299 MnCrWV Material Mechanical Properties
GB/T 1299 MnCrWV steel has many desirable mechanical properties which make it an ideal material for construction. It has a yield strength of 390-600 MPa and tensile strength of 540-780 MPa, which makes it an exceptionally strong and durable material. Moreover, it has an elongation of 22-42%, a reduction in area of 40-50%, and an impact energy of 27-36 J at room temperature, making it highly resistant to deformation. Furthermore, it has good weldability, making it perfect for complex constructions.
The mechanical properties of the GB/T 1299 MnCrWV steel are as follows:
| YieldRp0.2 | ≤ 988 (MPa) |
| TeileRm | ≤ 576 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 344 |
GB/T 1299 MnCrWV Material Thermal Properties
The thermal performance parameters of the GB/T 1299 MnCrWV steel are as follows:
| Temperature (°C) | 43 | 767 | 968 |
| Modulus of elasticity (GPa) | - | 456 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 334 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 324 |
| Poisson’s coefficient, ν | - | - | 113 |