ASTM A1008/A1008M HSLAS Grade 50 Class 2 Introduce
The ASTM A1008/A1008M steel standard covers a variety of properties that are tested to meet the standards set by the ASTM. These properties include mechanical properties like strength, ductility, and formability; chemical composition; surface cleanliness; shape and size; as well as several others. Manufacturers and consumers need to be aware of these properties in order to understand the quality of the steel they are buying or selling.
Smelting temperature:1965°C - 1735°C
Application:Standard Specification for Steel Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy, High-Strength Low-Alloy with Improved Formability
ASTM A1008/A1008M HSLAS Grade 50 Class 2 Material Chemical Composition
The chemical composition of the ASTM A1008/A1008M HSLAS Grade 50 Class 2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | 0.0050 | - |
| Titanium (Ti) | 0.0050 | - |
| Sulfur (S) | - | 0.0400 |
| PhOsphorus (P) | - | 0.0400 |
| Nickel (Ni) | - | 0.2000 |
| Niobium (Nb) | 0.0050 | - |
| Molybdenum (Mo) | - | 0.0600 |
| Manganese (Mn) | - | 1.6500 |
| Copper (Cu) | - | 0.2000 |
| Chromium (Cr) | - | 0.1500 |
| Carbon (C) | - | 0.1500 |
ASTM A1008/A1008M HSLAS Grade 50 Class 2 Material Mechanical Properties
Yield strength, also known as 0.2% offset yield strength, is the amount of stress a material can withstand without permanently stretching or changing shape. The yield strength of ASTM A1008/A1008M HSLAS Grade 50 Class 2 steel ranges from 280–375 MPa, depending on its chemical composition. Generally, the higher the yield strength, the better the material's ability to resist deformation.
The mechanical properties of the ASTM A1008/A1008M HSLAS Grade 50 Class 2 steel are as follows:
| YieldRp0.2 | ≤ 822 (MPa) |
| TeileRm | ≤ 552 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 144 |
ASTM A1008/A1008M HSLAS Grade 50 Class 2 Material Thermal Properties
The thermal performance parameters of the ASTM A1008/A1008M HSLAS Grade 50 Class 2 steel are as follows:
| Temperature (°C) | 24 | 134 | 457 |
| Modulus of elasticity (GPa) | - | 462 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 412 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.43 | - | - |
| Deity (kg/dm³) | - | - | 424 |
| Poisson’s coefficient, ν | - | - | 144 |
ASTM A1008/A1008M HSLAS Grade 50 Class 2 Material Machining Technology
The ASTM A1008/A1008M HSLAS Grade 50 Class 2 steel is a low-carbon steel that is commonly used in sheet metal fabrication. It is often found in structural applications, such as in construction, automotive manufacturing, and appliances. Machining this steel can be a challenge due to its high hardness. There are several methods that can be used to successfully machine this material, such as diamond grinding, EDM, milling, and turning.