GB/T 5216 A71405 Introduce
The high chromium content in GB/T 5216 A71405 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:1956°C - 1159°C
Application:Guaranteed hardenable structural steel
GB/T 5216 A71405 Material Chemical Composition
The chemical composition of the GB/T 5216 A71405 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | 0.1700 | 0.3700 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Nickel (Ni) | - | 0.3000 |
| Manganese (Mn) | 1.0000 | 1.4000 |
| Copper (Cu) | - | 0.3000 |
| Chromium (Cr) | - | 0.3500 |
| Carbon (C) | 0.3700 | 0.4400 |
| Boron (B) | 0.0005 | 0.0035 |
GB/T 5216 A71405 Material Mechanical Properties
GB/T 5216 A71405 can be heat-treated in order to improve its resistance to wear and tear. Heat treatment involves heating the steel to a certain temperature and then cooling it rapidly in order to form a hardened exterior layer. After heat treatment, the steel can achieve increased resistance to abrasion, fatigue, and corrosion.
The mechanical properties of the GB/T 5216 A71405 steel are as follows:
| YieldRp0.2 | ≤ 175 (MPa) |
| TeileRm | ≤ 473 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 14% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 234 |
GB/T 5216 A71405 Material Thermal Properties
The thermal performance parameters of the GB/T 5216 A71405 steel are as follows:
| Temperature (°C) | 42 | 944 | 563 |
| Modulus of elasticity (GPa) | - | 666 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 44 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 323 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 412 |
| Poisson’s coefficient, ν | - | - | 444 |
GB/T 5216 A71405 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 A71405 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 A71405 steel. GB/T 5216 A71405 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.