ASTM A1011/A1011M HSLAS-F Grade 550 Introduce
ASTM A1011/A1011M HSLAS-F Grade 550 is an excellent choice for many applications. It is an economical alternative to higher-grade materials and can provide excellent strength and performance with the right processes and treatments. However, it is important to consider the grade and properties of the steel carefully before selecting it for a particular application.
Smelting temperature:1533°C - 1931°C
Application:Standard Specification for Steel Sheet and Strip, Hot-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability
ASTM A1011/A1011M HSLAS-F Grade 550 Material Chemical Composition
The chemical composition of the ASTM A1011/A1011M HSLAS-F Grade 550 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.0050 | - |
| Titanium (Ti) | 0.0050 | - |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.2000 |
| Niobium (Nb) | 0.0050 | - |
| Molybdenum (Mo) | - | 0.1600 |
| Manganese (Mn) | - | 1.6500 |
| Copper (Cu) | - | 0.2000 |
| Chromium (Cr) | - | 0.1500 |
| Carbon (C) | - | 0.1500 |
ASTM A1011/A1011M HSLAS-F Grade 550 Material Mechanical Properties
ASTM A1011/A1011M HSLAS-F Grade 550 is a hot rolled, affinity-annealed, low carbon steel with a substrate of 2.25-3.0 percent carbon and micro-alloying elements. The alloying elements provide a stronger and more uniform material structure and increased tensile strength. This makes it suitable for applications such as structural beams, agricultural uses, and high pressure applications like pressurized gas lines.
The mechanical properties of the ASTM A1011/A1011M HSLAS-F Grade 550 steel are as follows:
| YieldRp0.2 | ≤ 636 (MPa) |
| TeileRm | ≤ 372 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 131 |
ASTM A1011/A1011M HSLAS-F Grade 550 Material Thermal Properties
The thermal performance parameters of the ASTM A1011/A1011M HSLAS-F Grade 550 steel are as follows:
| Temperature (°C) | 24 | 231 | 742 |
| Modulus of elasticity (GPa) | - | 825 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 42 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 243 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 241 |
| Poisson’s coefficient, ν | - | - | 121 |
ASTM A1011/A1011M HSLAS-F Grade 550 Material Machining Technology
ASTM A1011/A1011M HSLAS-F Grade 550 steel is a structural steel supported by the American Society for Testing and Materials (ASTM) for structural shapes, bars and sheets types. This high-strength steel is used in the manufacturing of bridges, buildings, industrial machinery and frameworks, among other products. This material is readily available and is often used in lieu of regular carbon steels when strength requirements outweigh cost considerations.