GB/T 699 45-E Introduce
Steel is one of the most commonly used materials in the world. It is a strong and durable material that can be shaped in a variety of ways and is used in almost every industry. Steel comes in different grades, with each grade having different mechanical properties. GB/T 699 45-E steel is one of the most popular steels for mechanical applications in China.
Smelting temperature:1538°C - 1465°C
Application:High quality carbon structural steel
GB/T 699 45-E Material Mechanical Properties
The mechanical properties of the GB/T 699 45-E steel are as follows:
| YieldRp0.2 | ≤ 199 (MPa) |
| TeileRm | ≤ 586 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 211 |
GB/T 699 45-E Material Thermal Properties
The thermal performance parameters of the GB/T 699 45-E steel are as follows:
| Temperature (°C) | 23 | 534 | 551 |
| Modulus of elasticity (GPa) | - | 546 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 42.2 |
| Specific thermal capacity (J/kg·°C) | - | 231 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 311 |
| Poisson’s coefficient, ν | - | - | 342 |
GB/T 699 45-E Material Machining Technology
Machining of GB/T 699 45-E steel typically requires a combination of diverse machining processes for quality production of more complex components. China being the biggest steel producers in the world, manufactures and supplies GB/T 699 45-E steel, which is a high-quality carbon structural steel. This type of steel is machinable and is suitable for the manufacture of automotive parts, machine tools, and many other machines. Typically, GB/T 699 45-E steel is used extensively in the manufacture of machinery and tools, as it is strong, durable and has excellent corrosion resistance.