ASTM A131/A131M A131 Grade DH36 Introduce
ASTM A131/A131M A131 Grade DH36 has a low carbon content, which prevents the formation of brittle layers of iron oxide during welding, making it less prone to cracks and fractures. It can also be treated to further increase its resistance to corrosion, by adding an aluminum layer. ASTM A131/A131M A131 Grade DH36 is generally used in maritime applications such as shipbuilding, oil platforms, containers, naval vessels, and offshore structures. It is also used in tank fabrications, processing plants, and pressure vessels. This steel can also be used to create a wide range of other products, including bridges, gates, walkways, ladders, and more.
Smelting temperature:1931°C - 1173°C
Application:Structural steel for seagoing
ASTM A131/A131M A131 Grade DH36 Material Mechanical Properties
ASTM A131/A131M A131 Grade DH36 steel has a high tensile strength rating. This type of steel can be bent, twisted, and stretched without losing its strength. Its elongation rating is very high, making it a good choice for applications in which flexibility is a priority. It has a moderate yield strength and a hardness rating of 80-91 Rockwell B, meaning that it is strong enough for most nautical applications.
The mechanical properties of the ASTM A131/A131M A131 Grade DH36 steel are as follows:
| YieldRp0.2 | ≤ 261 (MPa) |
| TeileRm | ≤ 713 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 43% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 324 |
ASTM A131/A131M A131 Grade DH36 Material Thermal Properties
The thermal performance parameters of the ASTM A131/A131M A131 Grade DH36 steel are as follows:
| Temperature (°C) | 22 | 868 | 567 |
| Modulus of elasticity (GPa) | - | 935 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 41 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 13.2 |
| Specific thermal capacity (J/kg·°C) | - | 244 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 134 |
| Poisson’s coefficient, ν | - | - | 423 |
ASTM A131/A131M A131 Grade DH36 Material Machining Technology
Cutting operations are used to cut ASTM A131/A131M A131 Grade DH36 steel into small pieces or shapes. Common types of cutting tools used for this purpose include shears and saws. When using shears, be sure to use high-speed steel or carbide tools, as these are designed for high-temperature environments.