GB HPb58-3 GB/T 26306
GB HPb58-3 GB/T 26306 Products Description
Our company has steel products billets, steel products, hot-rolled sheets, cold-drawn sheets, seamless steel pipes, steel bars and other products. GB HPb58-3 GB/T 26306 has a good reputation in the market, high-quality products, and thoughtful service in the steel industry. GB HPb58-3 GB/T 26306 has complete specifications, and the products are widely used in aerospace, petrochemical, and construction projects, with low requirements for products, easy processing and low dimensional accuracy requirements. And provide cutting, bending, welding, drilling, and other processing services.
Application: Free cutting copper alloy rod.
Heat treated: 1322°C - 1561°C.
GB HPb58-3 GB/T 26306 Product Details
GB HPb58-3 GB/T 26306 Chemical element
GB HPb58-3 GB/T 26306 in addition to carbon, steel also contains a small amount of manganese (Mn), silicon (Si), sulfur (S), phosphorus (P), oxygen (O), nitrogen (N) and hydrogen (H). These elements are not intentionally added to improve the quality of steel, but are brought in by ore and smelting process, so they are called impurity elements. These impurities have a certain impact on the properties of steel. In order to ensure the quality of steel, the chemical composition of all kinds of steel is strictly stipulated in technical standards.
The main elements proportion is as below:
| Element | Min | Max | Similar |
|---|---|---|---|
| Zn | - | - | - |
| Sn | - | 0.5000 | - |
| Pb | 2.5000 | 3.5000 | - |
| Others total | - | 1.0000 | - |
| Fe | - | 0.5000 | - |
| Cu | 57.0000 | 59.0000 | - |
| Other | - | 1.0000 | - |
GB HPb58-3 GB/T 26306 Mechanical properties
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 571 (≥) | 926 (≥) | 23 | 32 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 342 |
GB HPb58-3 GB/T 26306 Physical properties
Physical performance parameters of GB HPb58-3 GB/T 26306 are mainly indicated by density, poisson's ratio, thermal conductivity, specific thermal capacity, coefficient of thermal expansion, modulus of elasticity, electrical resistance value, etc.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 21 | - | - | 0.31 | - | |||
| 252 | 234 | - | 11.3 | 112 | - | ||
| 686 | - | 13 | 42.2 | 412 | 333 |
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