GB/T 1299 T20501 Introduce
Manganese and silicon both play a role in strengthening the GB/T 1299 T20501 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:1832°C - 1915°C
Application:Alloy tool steel
GB/T 1299 T20501 Material Chemical Composition
The chemical composition of the GB/T 1299 T20501 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.3000 | 0.6000 |
| Silicon (Si) | 0.8000 | 1.2000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | 1.4000 | 1.8000 |
| Molybdenum (Mo) | 1.1000 | 1.6000 |
| Manganese (Mn) | 0.2000 | 0.5000 |
| Chromium (Cr) | 4.7500 | 5.5000 |
| Carbon (C) | 0.3300 | 0.4300 |
GB/T 1299 T20501 Material Mechanical Properties
GB/T 1299 T20501 steel is an extremely versatile material due to its excellent combination of mechanical and physical properties. It has a yield strength of 390-600 MPa and tensile strength of 540-780 MPa, making it exceptionally strong and durable. It is highly resistant to deformation, offers good weldability, and is widely used in the automotive, energy and shipbuilding industry. Moreover, it is ideal for use in bridge, high-rise buildings, and structures subject to constant stress in the construction industry.
The mechanical properties of the GB/T 1299 T20501 steel are as follows:
| YieldRp0.2 | ≤ 826 (MPa) |
| TeileRm | ≤ 334 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 423 |
GB/T 1299 T20501 Material Thermal Properties
The thermal performance parameters of the GB/T 1299 T20501 steel are as follows:
| Temperature (°C) | 23 | 323 | 515 |
| Modulus of elasticity (GPa) | - | 521 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 14.2 |
| Specific thermal capacity (J/kg·°C) | - | 341 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 121 |
| Poisson’s coefficient, ν | - | - | 224 |