ISO 3183 PSL2 Grade L320QS Introduce
ISO 3183 PSL2 Grade L320QS is a set of standards for steel pipe manufacturing and for the oil and gas industries. It is one of the most popular steel grades used in the energy industry, used primarily for the transmission of oil and gas. ISO 3183 PSL2 Grade L320QS steel is created by the International Organization for Standardization (ISO) and is primarily applied to tubular products used in the oil and natural gas industries. The standard covers technical aspects such as manufacturing, testing, inspection, coating, and marking.
Smelting temperature:1542°C - 1464°C
Application:Petroleum and natural gas industries -- Steel pipe for pipeline transportation systems
ISO 3183 PSL2 Grade L320QS Material Mechanical Properties
ISO 3183 PSL2 Grade L320QS has excellent corrosion resistance, making it well-suited for use in many industrial applications. The corrosion resistance of the steel can be improved by low levels of sulfur and phosphorous, as well as by adding chromium and nickel to the alloying elements. The steel's ability to resist corrosion is also dependent on the surrounding environment. In a marine environment, for example, the alloy should be treated with additional corrosion inhibitors to improve its resistance to corrosion.
The mechanical properties of the ISO 3183 PSL2 Grade L320QS steel are as follows:
| YieldRp0.2 | ≤ 116 (MPa) |
| TeileRm | ≤ 768 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 324 |
ISO 3183 PSL2 Grade L320QS Material Thermal Properties
The thermal performance parameters of the ISO 3183 PSL2 Grade L320QS steel are as follows:
| Temperature (°C) | 41 | 275 | 571 |
| Modulus of elasticity (GPa) | - | 459 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 31.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 434 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 143 |
| Poisson’s coefficient, ν | - | - | 311 |
ISO 3183 PSL2 Grade L320QS Material Machining Technology
The first step in machining ISO 3183 PSL2 Grade L320QS is to choose the correct cutting tool and machining setup. In order to achieve an adequate cutting speed, tools with a high number of cutting edges should be selected, preferably between 7000 and 12000 RPM. To reduce the risk of chip formation and tool wear, hard-faced cutting tools with a certain degree of flexibility should be used.