ASTM A841/A841M A841 Grade A Class 1 Introduce
ASTM A841/A841M A841 Grade A Class 1 is a technical standard for quenched and tempered pressure vessel plates containing carbide-precipitation resistant steels. The steel plate has a specified chemical composition and mechanical properties, as outlined in the ASTM A841/A841M A841 Grade A Class 1 standard. Generally, the steel plate is used in applications where elevated mechanical properties are required, such as pressure vessels, power generation, and offshore oil and gas production.
Smelting temperature:1631°C - 1611°C
Application:Steel plate processed by temperature mechanical control process for pressure vessels
ASTM A841/A841M A841 Grade A Class 1 Material Chemical Composition
The chemical composition of the ASTM A841/A841M A841 Grade A Class 1 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0600 |
| Silicon (Si) | 0.1500 | 0.5000 |
| Sulfur (S) | - | 0.0300 |
| PhOsphorus (P) | - | 0.0300 |
| Nickel (Ni) | - | 0.2500 |
| Niobium (Nb) | - | 0.0300 |
| Molybdenum (Mo) | - | 0.0800 |
| Manganese (Mn) | 0.7000 | 1.3500 |
| Copper (Cu) | - | 0.3500 |
| Chromium (Cr) | - | 0.2500 |
| (CEV) | - | 0.4000 |
| Carbon (C) | - | 0.2000 |
| Aluminum (Al) | 0.0200 | - |
ASTM A841/A841M A841 Grade A Class 1 Material Mechanical Properties
ASTM A841/A841M A841 Grade A Class 1 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 A Class 1 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 A Class 1 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 A Class 1 steel, such as its forming characteristics, ductility, strength, hardness and more.
The mechanical properties of the ASTM A841/A841M A841 Grade A Class 1 steel are as follows:
| YieldRp0.2 | ≤ 966 (MPa) |
| TeileRm | ≤ 461 (MPa) |
| ImpactKV/Ku | 13(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 233 |
ASTM A841/A841M A841 Grade A Class 1 Material Thermal Properties
The thermal performance parameters of the ASTM A841/A841M A841 Grade A Class 1 steel are as follows:
| Temperature (°C) | 44 | 895 | 147 |
| Modulus of elasticity (GPa) | - | 164 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 42.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 133 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 423 |
| Poisson’s coefficient, ν | - | - | 214 |
ASTM A841/A841M A841 Grade A Class 1 Material Machining Technology
ASTM A841/A841M A841 Grade A Class 1 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 A Class 1 steel can be machined with a variety of tools and techniques.