ASTM A1008/A1008M A1008 BHS Grade 31 Introduce
The ASTM A1008/A1008M steel standard is an important steel standard worldwide recognized by product manufacturers and consumers. It covers cold-rolled, carbon, structural, high-strength low-alloy, and high-strength low-alloy with improved formability steel sheet and strip, in coils, cut lengths, and formed shapes. It is often used in automotive and aviation industry applications, as well as appliance and electronic applications.
Smelting temperature:1114°C - 1813°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 A1008 BHS Grade 31 Material Chemical Composition
The chemical composition of the ASTM A1008/A1008M A1008 BHS Grade 31 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0080 |
| Titanium (Ti) | - | 0.0080 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.1200 |
| Nickel (Ni) | - | 0.2000 |
| Niobium (Nb) | - | 0.0080 |
| Molybdenum (Mo) | - | 0.0600 |
| Manganese (Mn) | - | 1.5000 |
| Copper (Cu) | - | 0.2000 |
| Chromium (Cr) | - | 0.1500 |
| Carbon (C) | - | 0.1200 |
ASTM A1008/A1008M A1008 BHS Grade 31 Material Mechanical Properties
ASTM A1008/A1008M A1008 BHS Grade 31 steel is an important material for use in structural, general engineering, and automotive applications due to its high strength-to-weight ratio and resistance to fatigue. The chemical composition of ASTM A1008/A1008M A1008 BHS Grade 31 steel is critical for its performance in these applications. It is comprised of carbon, manganese, phosphorus, sulfur, and silicon. Each of these elements impacts the mechanical properties, as well as the formability, of the steel.
The mechanical properties of the ASTM A1008/A1008M A1008 BHS Grade 31 steel are as follows:
| YieldRp0.2 | ≤ 371 (MPa) |
| TeileRm | ≤ 975 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 31% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 413 |
ASTM A1008/A1008M A1008 BHS Grade 31 Material Thermal Properties
The thermal performance parameters of the ASTM A1008/A1008M A1008 BHS Grade 31 steel are as follows:
| Temperature (°C) | 31 | 161 | 163 |
| Modulus of elasticity (GPa) | - | 143 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 122 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.22 | - | - |
| Deity (kg/dm³) | - | - | 323 |
| Poisson’s coefficient, ν | - | - | 243 |
ASTM A1008/A1008M A1008 BHS Grade 31 Material Machining Technology
When machining ASTM A1008/A1008M A1008 BHS Grade 31 steel, it is important to keep several factors in mind. The use of sharp tools is essential for achieving good results. A slower speed and feed rate should also be used to prevent chipping and deformation of the material. Additionally, the use of a coolant and cutting fluids can help reduce friction and prevent thermal trauma.