ASTM A841/A841M A841 Grade D Class 3 Introduce
ASTM A841/A841M A841 Grade D Class 3 is a steel standard introduced in 2018 by the American Society for Testing and Materials (ASTM). This steel standard is intended to provide material specifications for structural steel plates and shapes. It is commonly used in engineering, construction and aerospace applications where strength is a must. This steel standard covers two grades A841 Grade A and A841 Grade B, both of which are highly resistant to hot and cold temperature changes and provide superior strength for a wide range of applications such as in bridges and industrial structures.
Smelting temperature:1684°C - 1876°C
Application:Steel plate processed by temperature mechanical control process for pressure vessels
ASTM A841/A841M A841 Grade D Class 3 Material Mechanical Properties
ASTM A841/A841M A841 Grade D Class 3 is a steel that is recognized for its high performance in large scale components, such as pressure vessels and other complex structures. The steel is part of the ASTM A841/A841M A841 Grade D Class 3 family of steel grades, and its mechanical properties are derived from the combination of certain alloying elements and heat-treatment processes. The mechanical properties of ASTM A841/A841M A841 Grade D Class 3 must be thoroughly understood to ensure efficient and reliable operation of the components which are made of this steel. This article will discuss the various mechanical properties of ASTM A841/A841M A841 Grade D Class 3 steel, such as its forming characteristics, ductility, strength, hardness and more.
The mechanical properties of the ASTM A841/A841M A841 Grade D Class 3 steel are as follows:
| YieldRp0.2 | ≤ 188 (MPa) |
| TeileRm | ≤ 525 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 223 |
ASTM A841/A841M A841 Grade D Class 3 Material Thermal Properties
The thermal performance parameters of the ASTM A841/A841M A841 Grade D Class 3 steel are as follows:
| Temperature (°C) | 23 | 986 | 959 |
| Modulus of elasticity (GPa) | - | 521 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 131 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 234 |
| Poisson’s coefficient, ν | - | - | 434 |
ASTM A841/A841M A841 Grade D Class 3 Material Machining Technology
ASTM A841/A841M A841 Grade D Class 3 steel is a high-strength, low-alloy steel used extensively in the aerospace and marine industries. The alloy has been designed to be machinable, making it an ideal choice for a variety of parts and components. ASTM A841/A841M A841 Grade D Class 3 steel can be machined with a variety of tools and techniques.