GB/T 3077 18CrMnNiMo Introduce
GB/T 3077 18CrMnNiMo 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 18CrMnNiMo 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:1671°C - 1531°C
Application:Alloy structural steel
GB/T 3077 18CrMnNiMo Material Chemical Composition
The chemical composition of the GB/T 3077 18CrMnNiMo steel are as follows:
| Element | Min | Max |
|---|---|---|
| Nickel (Ni) | 1.0000 | 1.3000 |
| Molybdenum (Mo) | 0.2000 | 0.3000 |
| Chromium (Cr) | 1.0000 | 1.3000 |
| Manganese (Mn) | 1.1000 | 1.4000 |
| Silicon (Si) | 0.1700 | 0.3700 |
| Carbon (C) | 0.1500 | 0.2100 |
GB/T 3077 18CrMnNiMo Material Mechanical Properties
GB/T 3077 18CrMnNiMo is mostly used for engineering, industrial and transportation applications that require high strength, corrosion resistance, superior performance, and long service life. GB/T 3077 18CrMnNiMo meets the demands of the most stringent applications with its good machinability, low cost, good formability and high strength-to-weight ratio. It is the perfect choice for automotive, aerospace, and other lightweight applications.
The mechanical properties of the GB/T 3077 18CrMnNiMo steel are as follows:
| YieldRp0.2 | ≤ 197 (MPa) |
| TeileRm | ≤ 887 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 441 |
GB/T 3077 18CrMnNiMo Material Thermal Properties
The thermal performance parameters of the GB/T 3077 18CrMnNiMo steel are as follows:
| Temperature (°C) | 43 | 157 | 628 |
| Modulus of elasticity (GPa) | - | 133 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 334 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 314 |
| Poisson’s coefficient, ν | - | - | 434 |
GB/T 3077 18CrMnNiMo Material Machining Technology
GB/T 3077 18CrMnNiMo steel is a versatile material that is highly suited to automotive and engineering applications. Its high strength and its resistance to impacts, wear, and fatigue make it an excellent choice for parts and components that must be able to endure heavy loads, shocks, and vibrations without breaking or deforming. In addition to its mechanical properties, GB/T 3077 18CrMnNiMo steel is economical and easy to manipulate, making it a reliable and cost-effective choice for many engineering and automotive designs.