GB/T 3077 18Cr2Ni4WA Introduce
GB/T 3077 18Cr2Ni4WA is one of the most commonly used Chinese structural steels especially for low to medium strength applications. It is well suited for hot forming and cold forming, and it is often used for medium strength mechanical parts. Its tensile strength is from 370 to 500MPa and yield strength from 310 to 390MPa. GB/T 3077 18Cr2Ni4WA is widely used for the production of hot rolled steels for machine building, brakes and press components, crankshafts, gears, shafts for engines, hydraulic power units and parts for oil-field industry. It is also suitable for manufacturing heat-resistant parts, vehicle load components, shafts, and such.
Smelting temperature:1419°C - 1795°C
Application:Alloy structural steel
GB/T 3077 18Cr2Ni4WA Material Mechanical Properties
GB/T 3077 18Cr2Ni4WA is mostly used for engineering, industrial and transportation applications that require high strength, corrosion resistance, superior performance, and long service life. GB/T 3077 18Cr2Ni4WA 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 18Cr2Ni4WA steel are as follows:
| YieldRp0.2 | ≤ 865 (MPa) |
| TeileRm | ≤ 875 (MPa) |
| ImpactKV/Ku | 23(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) | 413 |
GB/T 3077 18Cr2Ni4WA Material Thermal Properties
The thermal performance parameters of the GB/T 3077 18Cr2Ni4WA steel are as follows:
| Temperature (°C) | 22 | 188 | 338 |
| Modulus of elasticity (GPa) | - | 793 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 212 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 241 |
| Poisson’s coefficient, ν | - | - | 433 |
GB/T 3077 18Cr2Ni4WA Material Machining Technology
When working with GB/T 3077 18Cr2Ni4WA steel, it is important to be aware of the materials and tools required to achieve the desired results. Generally, this type of steel is machined using standard tools, such as drills, taps, reamers, and turning tools. It can be machined using both traditional and CNC machines, including lathes and mills.