ASTM A576 Grade 15L18 Introduce
ASTM A576 Grade 15L18 steel is commonly used in a variety of construction and engineering applications. It is a low-alloy, carbon-manganese steel that possesses good tensile strength and ductility. Along with its excellent mechanical properties, ASTM A576 Grade 15L18 steel also has several thermal properties that make it an ideal material for heat-resistant applications.
Smelting temperature:1919°C - 1116°C
Application:Super hot rolled carbon steel rod
ASTM A576 Grade 15L18 Material Chemical Composition
The chemical composition of the ASTM A576 Grade 15L18 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.1000 |
| Sulfur (S) | - | 0.0500 |
| Lead (Pb) | 0.1500 | 0.3500 |
| PhOsphorus (P) | - | 0.0400 |
| Manganese (Mn) | 1.1000 | 1.4000 |
| Copper (Cu) | 0.2000 | - |
| Carbon (C) | 0.1500 | 0.2100 |
| Boron (B) | 0.0005 | 0.0030 |
ASTM A576 Grade 15L18 Material Mechanical Properties
The mechanical properties of the ASTM A576 Grade 15L18 steel are as follows:
| YieldRp0.2 | ≤ 135 (MPa) |
| TeileRm | ≤ 932 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 11% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 111 |
ASTM A576 Grade 15L18 Material Thermal Properties
The thermal performance parameters of the ASTM A576 Grade 15L18 steel are as follows:
| Temperature (°C) | 12 | 452 | 811 |
| Modulus of elasticity (GPa) | - | 151 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 31.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 211 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.13 | - | - |
| Deity (kg/dm³) | - | - | 443 |
| Poisson’s coefficient, ν | - | - | 334 |
ASTM A576 Grade 15L18 Material Machining Technology
Machining ASTM A576 Grade 15L18 steel requires special attention and consideration due to its hardenability and wide range of alloying elements. When machining ASTM A576 Grade 15L18 steel, it is important to ensure that proper allowances are made for the initial cutting tool (e.g. drill bit) and the speed of the procedure.