ISO 3183 PSL2 Grade L450MO Introduce
The latest revision, ISO 3183:2018, was published in August 2018, replacing the original version of the standard. The goal of The ISO 3183 is to ensure that steel piping used in the oil and gas industry is safe, reliable, and compatible with the other components in the system. The standard provides guidance and detailed requirements for the design, production, and assembly of steel pipes, so that they will last for the duration of their intended use.
Smelting temperature:1341°C - 1827°C
Application:Petroleum and natural gas industries -- Steel pipe for pipeline transportation systems
ISO 3183 PSL2 Grade L450MO Material Mechanical Properties
The mechanical properties of ISO 3183 PSL2 Grade L450MO are determined through the combination of chemistry, heat treatment, and mechanical processing. Generally speaking, the mechanical properties of ISO 3183 PSL2 Grade L450MO can be improved by increasing the levels of alloying elements, such as carbon and manganese. ISO 3183 PSL2 Grade L450MO 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 L450MO has excellent weldability and is suitable for cold forming and bending.
The mechanical properties of the ISO 3183 PSL2 Grade L450MO steel are as follows:
| YieldRp0.2 | ≤ 683 (MPa) |
| TeileRm | ≤ 263 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 22% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 443 |
ISO 3183 PSL2 Grade L450MO Material Thermal Properties
The thermal performance parameters of the ISO 3183 PSL2 Grade L450MO steel are as follows:
| Temperature (°C) | 22 | 493 | 762 |
| Modulus of elasticity (GPa) | - | 316 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 21 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 441 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 421 |
| Poisson’s coefficient, ν | - | - | 312 |
ISO 3183 PSL2 Grade L450MO Material Machining Technology
The machining parameters of ISO 3183 PSL2 Grade L450MO 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.