GB/T 1299 T20104 Introduce
GB/T 1299 T20104 steel is a commercial steel alloy with a wide range of applications. Its elemental composition is easily tailored to meet the needs of different applications, with the amount of each element being carefully monitored to ensure that the final product is suitable for its intended use. The various elements included in the alloy all serve a specific purpose, whether it be increased strength, improved heat resistance, or enhanced corrosion resistance.
Smelting temperature:1576°C - 1786°C
Application:Alloy tool steel
GB/T 1299 T20104 Material Chemical Composition
The chemical composition of the GB/T 1299 T20104 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.1500 | 0.3000 |
| Silicon (Si) | 0.8500 | 1.1500 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Niobium (Nb) | 0.2000 | 0.3500 |
| Molybdenum (Mo) | 0.2000 | 0.5000 |
| Manganese (Mn) | 0.6500 | 1.0500 |
| Chromium (Cr) | 0.9000 | 1.2000 |
| Carbon (C) | 0.6500 | 0.7500 |
GB/T 1299 T20104 Material Mechanical Properties
GB/T 1299 T20104 steel is used in almost every branch of industry due to its unique combination of mechanical and physical properties. GB/T 1299 T20104 Grade steel is one such variety that is used particularly in the construction industry. It has excellent mechanical properties, such as high strength and ductility, and can be used in a wide variety of applications.
The mechanical properties of the GB/T 1299 T20104 steel are as follows:
| YieldRp0.2 | ≤ 755 (MPa) |
| TeileRm | ≤ 659 (MPa) |
| ImpactKV/Ku | 42(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 412 |
GB/T 1299 T20104 Material Thermal Properties
The thermal performance parameters of the GB/T 1299 T20104 steel are as follows:
| Temperature (°C) | 41 | 923 | 482 |
| Modulus of elasticity (GPa) | - | 693 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 133 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 312 |
| Poisson’s coefficient, ν | - | - | 232 |