GB/T 3077 A30352 Introduce
GB/T 3077 A30352 steel is a versatile material that is ideal for a variety of engineering and automotive applications. Its high strength and ductility allow it to endure heavy loads and stress, while its impact resistance and fatigue resistance make it suitable for use in parts and components that are subject to frequent vibration or impacts. GB/T 3077 A30352 steel is highly economical. It has good weldability and is easy to shape and form, which make it cost-effective to produce. It is also resistant to corrosion and is available in a variety of grades, making it a versatile and reliable material for a wide range of applications.
Smelting temperature:1577°C - 1528°C
Application:Alloy structural steel
GB/T 3077 A30352 Material Chemical Composition
The chemical composition of the GB/T 3077 A30352 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1700 | 0.3700 |
| Sulfur (S) | - | 0.0200 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.3000 |
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Manganese (Mn) | 0.4000 | 0.7000 |
| Copper (Cu) | - | 0.2000 |
| Chromium (Cr) | 0.8000 | 1.1000 |
| Carbon (C) | 0.3200 | 0.4000 |
GB/T 3077 A30352 Material Mechanical Properties
GB/T 3077 A30352 is generally suitable for forging and hot forming, cold forming, and heat treatment. It is mainly used in the form of bars and plates, however, some grades can be used as thin-walled tube, thin plate, and thin wire products. After cold forming, the mechanical properties of GB/T 3077 A30352 are slightly improved.
The mechanical properties of the GB/T 3077 A30352 steel are as follows:
| YieldRp0.2 | ≤ 331 (MPa) |
| TeileRm | ≤ 774 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 22% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 243 |
GB/T 3077 A30352 Material Thermal Properties
The thermal performance parameters of the GB/T 3077 A30352 steel are as follows:
| Temperature (°C) | 21 | 862 | 632 |
| Modulus of elasticity (GPa) | - | 285 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 212 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 422 |
| Poisson’s coefficient, ν | - | - | 212 |
GB/T 3077 A30352 Material Machining Technology
GB/T 3077 A30352 is an excellent choice for creating components and parts that require high strength, superior performance, and long service life. This steel offers a good combination of mechanical and physical properties with excellent weldability and machinability, especially when compared to other Chinese structural steels. With its cost and performance advantages, GB/T 3077 A30352 makes an ideal choice for a wide range of applications.