ASTM A576 Grade 11L18 Introduce
ASTM A576 Grade 11L18 is a special-graded steel with a unique chemical composition and a wide range of mechanical properties. The steel is manufactured by a modified version of the open-hearth process, making it ideal for a wide range of engineering and construction applications. ASTM A576 Grade 11L18 is a low-alloy steel and is primarily used in pipe and structural applications requiring high strength and lower temperatures. The steel has a relatively low-carbon content, making it a versatile and cost-effective option.
Smelting temperature:1536°C - 1386°C
Application:Super hot rolled carbon steel rod
ASTM A576 Grade 11L18 Material Chemical Composition
The chemical composition of the ASTM A576 Grade 11L18 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.1000 |
| Sulfur (S) | 0.0800 | 0.1300 |
| Lead (Pb) | 0.1500 | 0.3500 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 1.3000 | 1.6000 |
| Carbon (C) | 0.1400 | 0.2000 |
ASTM A576 Grade 11L18 Material Mechanical Properties
The mechanical properties of the ASTM A576 Grade 11L18 steel are as follows:
| YieldRp0.2 | ≤ 627 (MPa) |
| TeileRm | ≤ 378 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 12% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 311 |
ASTM A576 Grade 11L18 Material Thermal Properties
The thermal performance parameters of the ASTM A576 Grade 11L18 steel are as follows:
| Temperature (°C) | 34 | 652 | 929 |
| Modulus of elasticity (GPa) | - | 128 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 24.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 313 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.31 | - | - |
| Deity (kg/dm³) | - | - | 342 |
| Poisson’s coefficient, ν | - | - | 134 |
ASTM A576 Grade 11L18 Material Machining Technology
ASTM A576 Grade 11L18 steel is a specific grade of steel that is widely used in a range of machining applications. It is a carbon-manganese steel usually used in heavy-duty applications, particularly in the automotive and shipbuilding industries. Despite its application versatility, machining ASTM A576 Grade 11L18 steel can generally be a difficult process due to its properties.