ISO 3183 PSL2 Grade L450QO Introduce
ISO 3183 PSL2 Grade L450QO 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 L450QO 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:1229°C - 1953°C
Application:Petroleum and natural gas industries -- Steel pipe for pipeline transportation systems
ISO 3183 PSL2 Grade L450QO Material Chemical Composition
The chemical composition of the ISO 3183 PSL2 Grade L450QO steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0900 |
| Titanium (Ti) | - | 0.0600 |
| Silicon (Si) | - | 0.4500 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.3000 |
| (Nb+Ti+V) | - | 0.1500 |
| Niobium (Nb) | - | 0.0500 |
| Nitrogen (N) | - | 0.0120 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | - | 1.6500 |
| Copper (Cu) | - | 0.3500 |
| Chromium (Cr) | - | 0.3000 |
| (CEV) | - | 0.4200 |
| Carbon (C) | - | 0.1600 |
| Boron (B) | - | 0.0005 |
| Aluminum (Al) | - | 0.0600 |
ISO 3183 PSL2 Grade L450QO Material Mechanical Properties
The mechanical properties of ISO 3183 PSL2 Grade L450QO are determined through the combination of chemistry, heat treatment, and mechanical processing. Generally speaking, the mechanical properties of ISO 3183 PSL2 Grade L450QO can be improved by increasing the levels of alloying elements, such as carbon and manganese. ISO 3183 PSL2 Grade L450QO 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 L450QO has excellent weldability and is suitable for cold forming and bending.
The mechanical properties of the ISO 3183 PSL2 Grade L450QO steel are as follows:
| YieldRp0.2 | ≤ 959 (MPa) |
| TeileRm | ≤ 286 (MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 14% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 312 |
ISO 3183 PSL2 Grade L450QO Material Thermal Properties
The thermal performance parameters of the ISO 3183 PSL2 Grade L450QO steel are as follows:
| Temperature (°C) | 34 | 593 | 482 |
| Modulus of elasticity (GPa) | - | 916 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 42.2 |
| Specific thermal capacity (J/kg·°C) | - | 123 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 133 |
| Poisson’s coefficient, ν | - | - | 123 |
ISO 3183 PSL2 Grade L450QO Material Machining Technology
ISO 3183 PSL2 Grade L450QO is a specialized type of high-strength steel alloy constructed with a combination of chromium, manganese and molybdenum. ISO 3183 PSL2 Grade L450QO is highly malleable, making it suitable for a variety of machining operations. The machining of ISO 3183 PSL2 Grade L450QO is a complex process which can be carried out correctly and quickly to obtain a quality product.