ASTM A387/A387M A387 K21590 Introduce
The ASTM A387/A387M A387 K21590 plates are available in a wide range of sizes and thicknesses, and in different shapes such as plates, sheets and tubes. The plates are easy to cut and can be machined to meet the exact requirements of the application. The plates can also be annealed and normalized for use in applications that require an optimum combination of strength and ductility.
Smelting temperature:1491°C - 1967°C
Application:Pressure vessel plate, alloy steel, chrome molybdenum
ASTM A387/A387M A387 K21590 Material Chemical Composition
The chemical composition of the ASTM A387/A387M A387 K21590 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.5000 |
| Sulfur (S) | - | 0.0250 |
| PhOsphorus (P) | - | 0.0250 |
| Molybdenum (Mo) | 0.8500 | 1.1500 |
| Manganese (Mn) | 0.2500 | 0.6600 |
| Chromium (Cr) | 1.8800 | 2.6200 |
| Carbon (C) | 0.0400 | 0.1500 |
ASTM A387/A387M A387 K21590 Material Mechanical Properties
ASTM A387/A387M A387 K21590 steel has very good corrosion resistance. This material can resist the effects of most acids and bases, as well as most saline metal environments. The corrosion resistance of ASTM A387/A387M A387 K21590 steel makes it an ideal choice for applications in marine and other corrosive environments.
The mechanical properties of the ASTM A387/A387M A387 K21590 steel are as follows:
| YieldRp0.2 | ≤ 399 (MPa) |
| TeileRm | ≤ 116 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 233 |
ASTM A387/A387M A387 K21590 Material Thermal Properties
The thermal performance parameters of the ASTM A387/A387M A387 K21590 steel are as follows:
| Temperature (°C) | 24 | 314 | 146 |
| Modulus of elasticity (GPa) | - | 848 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 32.3 | 22.2 |
| Specific thermal capacity (J/kg·°C) | - | 121 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 323 |
| Poisson’s coefficient, ν | - | - | 433 |
ASTM A387/A387M A387 K21590 Material Machining Technology
Chamfering and deburring are important steps in the machining of ASTM A387/A387M A387 K21590 steel. These processes help to reduce the risk of fractures and other surface irregularities that can occur during further processing and use. Chamfering is the process of creating a beveled edge on an object, while deburring is the process of removing any extra burrs or sharp edges left behind after machining.