GB/T 9711 PSL2 Grade X80Q Introduce
GB/T 9711 PSL2 Grade X80Q steel is an alloy steel widely used in the production of steel pipes due to its corrosion resistance and mechanical properties. The chemical composition of this steel includes low levels of carbon, high levels of manganese, chromium, molybdenum, copper and nickel, which all aid in its ability to resist corrosion and increase its strength. Mechanical properties such as yield strength, tensile strength and ductility are also superb for this material. Additionally, its weldability makes it an ideal choice for welding applications.
Smelting temperature:1241°C - 1445°C
Application:Oil and gas industry, steel pipe for pipeline transportation system
GB/T 9711 PSL2 Grade X80Q Material Chemical Composition
The chemical composition of the GB/T 9711 PSL2 Grade X80Q steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | - | 1.9000 |
| Silicon (Si) | - | 0.4500 |
| Carbon (C) | - | 0.1800 |
GB/T 9711 PSL2 Grade X80Q Material Mechanical Properties
The mechanical properties of GB/T 9711 PSL2 Grade X80Q steel are also impacted by its chemical composition. The strength of this steel is typically in the range of 410-490 MPa, with the higher end of this range reaching up to 550 MPa. This strength makes it a popular choice for applications that require high durability and strength.Another important property is its tensile strength, which is the maximum force that can be applied to the material before it fails. GB/T 9711 PSL2 Grade X80Q steel typically has a tensile strength of between 620-790 MPa, but it can reach up to 1000 MPa in some grades.
The mechanical properties of the GB/T 9711 PSL2 Grade X80Q steel are as follows:
| YieldRp0.2 | ≤ 858 (MPa) |
| TeileRm | ≤ 568 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 443 |
GB/T 9711 PSL2 Grade X80Q Material Thermal Properties
The thermal performance parameters of the GB/T 9711 PSL2 Grade X80Q steel are as follows:
| Temperature (°C) | 11 | 112 | 741 |
| Modulus of elasticity (GPa) | - | 868 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 222 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 322 |
| Poisson’s coefficient, ν | - | - | 243 |
GB/T 9711 PSL2 Grade X80Q Material Machining Technology
GB/T 9711 PSL2 Grade X80Q steel is suitable for use in high-temperature environments due to its excellent mechanical properties at elevated temperatures. The strength and ductility of GB/T 9711 PSL2 Grade X80Q steel remains high up to temperatures of 400°C and its creep resistance is good up to 120°C. The good creep resistance of GB/T 9711 PSL2 Grade X80Q steel makes it particularly suitable for use in applications that involve high temperatures, such as gas pipelines.