GB/T 5216 A20407 Introduce
The high chromium content in GB/T 5216 A20407 steel is responsible for its superior corrosion resistance and toughness. The chromium combines with other elements in the steel to form hard, protective oxide layers that prevent corrosion from occurring. These layers are very stable and can withstand a wide range of temperatures and environments.
Smelting temperature:1562°C - 1368°C
Application:Guaranteed hardenable structural steel
GB/T 5216 A20407 Material Mechanical Properties
Fatigue tests are used to determine the amount of stress that a material can handle over long periods of time. During a fatigue test, a sample of GB/T 5216 A20407 steel is placed in a machine and subjected to regular and repeated cycles of stress until it fails. Fatigue tests on this steel can show that it can withstand up to 590 MPa without breaking for up to 1000 load cycles.
The mechanical properties of the GB/T 5216 A20407 steel are as follows:
| YieldRp0.2 | ≤ 684 (MPa) |
| TeileRm | ≤ 543 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 23% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 133 |
GB/T 5216 A20407 Material Thermal Properties
The thermal performance parameters of the GB/T 5216 A20407 steel are as follows:
| Temperature (°C) | 31 | 853 | 112 |
| Modulus of elasticity (GPa) | - | 693 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 111 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 113 |
| Poisson’s coefficient, ν | - | - | 213 |
GB/T 5216 A20407 Material Machining Technology
Machining involves the use of tools to cut, shape, and otherwise alter raw materials. Common machining operations that can be used to process GB/T 5216 A20407 steel include turning, milling, drilling, reaming, tapping, and honing. In all of these operations, it is important to consider the properties of GB/T 5216 A20407 steel. GB/T 5216 A20407 steel is a medium-carbon steel that is particularly hard and strong, with an acceptable level of ductility and malleability. As a result, it is particularly resistant to wear and tear, abrasion, and impact forces.