ISO 3183 PSL2 Grade L290QO Introduce
The ISO 3183 provides detailed information on all technical aspects of steel pipes, including their dimensions, mechanical properties, and quality assurance requirements. For example, it sets out requirements for the strength, hardness, and longitudinal weld tests that need to be performed in order to ensure that the pipe is suitable for its intended purpose.
Smelting temperature:1772°C - 1184°C
Application:Petroleum and natural gas industries -- Steel pipe for pipeline transportation systems
ISO 3183 PSL2 Grade L290QO Material Chemical Composition
The chemical composition of the ISO 3183 PSL2 Grade L290QO steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0400 |
| Titanium (Ti) | - | 0.0400 |
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.3000 |
| Niobium (Nb) | - | 0.0400 |
| Nitrogen (N) | - | 0.0120 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | - | 1.3500 |
| Copper (Cu) | - | 0.3500 |
| Chromium (Cr) | - | 0.3000 |
| (CEV) | - | 0.3400 |
| Carbon (C) | - | 0.1400 |
| Boron (B) | - | 0.0005 |
| Aluminum (Al) | - | 0.0600 |
ISO 3183 PSL2 Grade L290QO Material Mechanical Properties
The mechanical properties of ISO 3183 PSL2 Grade L290QO are determined through the combination of chemistry, heat treatment, and mechanical processing. Generally speaking, the mechanical properties of ISO 3183 PSL2 Grade L290QO can be improved by increasing the levels of alloying elements, such as carbon and manganese. ISO 3183 PSL2 Grade L290QO is often classified as a medium carbon steel with a yield strength of at least 250 MPa (36 ksi). It is also classified as an alloy steel, which means it has a higher level of strength than low carbon steel and greater wear resistance than stainless steel. Generally, ISO 3183 PSL2 Grade L290QO has excellent weldability and is suitable for cold forming and bending.
The mechanical properties of the ISO 3183 PSL2 Grade L290QO steel are as follows:
| YieldRp0.2 | ≤ 251 (MPa) |
| TeileRm | ≤ 241 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 34% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 343 |
ISO 3183 PSL2 Grade L290QO Material Thermal Properties
The thermal performance parameters of the ISO 3183 PSL2 Grade L290QO steel are as follows:
| Temperature (°C) | 44 | 912 | 455 |
| Modulus of elasticity (GPa) | - | 763 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 33 |
| Thermal conductivity (W/m·°C) | - | 12.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 443 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 314 |
| Poisson’s coefficient, ν | - | - | 122 |
ISO 3183 PSL2 Grade L290QO Material Machining Technology
The machining parameters of ISO 3183 PSL2 Grade L290QO may vary depending on the specific application. In general, care must be taken to ensure that the cutting speed, feed rate, and depth of cut are suitable for the material. The operator should also be aware of the proper cutting direction to avoid tool breakage and other machining problems.