ASTM A131/A131M A131 Grade DH32 Introduce
ASTM A131/A131M A131 Grade DH32 is a strong and durable steel alloy used in a range of applications, from naval vessels to pressure vessels. The steel offers protection from corrosion, excellent weldability and ductility, and it can also be treated to further increase its resistance to corrosion. Furthermore, it is generally an economical material, making it an attractive choice for many projects.
Smelting temperature:1354°C - 1755°C
Application:Structural steel for seagoing
ASTM A131/A131M A131 Grade DH32 Material Mechanical Properties
In addition to its strength and corrosion resistance, ASTM A131/A131M A131 Grade DH32 steel also has excellent weldability. Its low carbon and silicon contents make it easy to weld and make strong weld joints. This makes it an ideal choice for shipbuilding and other applications where welding is a common practice.
The mechanical properties of the ASTM A131/A131M A131 Grade DH32 steel are as follows:
| YieldRp0.2 | ≤ 434 (MPa) |
| TeileRm | ≤ 423 (MPa) |
| ImpactKV/Ku | 12(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 444 |
ASTM A131/A131M A131 Grade DH32 Material Thermal Properties
The thermal performance parameters of the ASTM A131/A131M A131 Grade DH32 steel are as follows:
| Temperature (°C) | 32 | 445 | 424 |
| Modulus of elasticity (GPa) | - | 727 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 12 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 142 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 234 |
| Poisson’s coefficient, ν | - | - | 222 |
ASTM A131/A131M A131 Grade DH32 Material Machining Technology
When machining ASTM A131/A131M A131 Grade DH32 steel, the use of proper cutting fluids can help minimize tool wear and improve the machining process. Water- or oil-based cutting fluids can be used, as long as they are specifically designed for machining operations. Some common types of cutting fluids used for ASTM A131/A131M A131 Grade DH32 steel include mineral oil, petroleum-based, and synthetic cutting fluid.