ASTM A387 Grade 12 Class 2 ASTM A387/A387M
Boiler and Pressure Vessel Steel Product Introduction
ASTM A387 Grade 12 Class 2 ASTM A387/A387M is a high-temperature and corrosion-resistant steel alloy composed of chrome molybdenum. With a tensile strength of 90 ksi (620 MPa) and heat-treating temperatures reaching 1202-1350°F (650-732°C), the alloy is ideal for a variety of pressure-containing applications exposed to elevated temperatures. In addition to its exceptional strength, ASTM A387 Grade 12 Class 2 ASTM A387/A387M steel is also highly resistant to corrosion and other damaging effects that can be experienced in extreme scenarios. It is for these reasons that the alloy is popularly used in engine components, power generation, construction and oil and gas applications.
As experienced ASTM A387 Grade 12 Class 2 ASTM A387/A387M supplier, we can not only provide clients with quantity guaranteed ASTM A387/A387M high-quality products, but also offer good price and equipped with complete after sales service. Besides, there are also a series of added value service, such as information share with clients, including ASTM A387 Grade 12 Class 2 ASTM A387/A387M chemical composition, A387 Grade 12 Class 2 properties, A387 Grade 12 Class 2 density, A387 Grade 12 Class 2 strength, A387 Grade 12 Class 2 equivalent, etc.
Application: Pressure vessel plate, alloy steel, chrome molybdenum.
Heat treated: 1154°C - 1493°C.
Boiler and Pressure Vessel Steel Product Details
ASTM A387 Grade 12 Class 2 ASTM A387/A387M Chemical element
The alloy is also highly corrosion-resistant thanks to the chromium content of 0.5-9%. When exposed to high temperatures and corrosive chemical environments, the alloy maintains a high-level of performance.
What is the chemical composition of ASTM A387 Grade 12 Class 2 ASTM A387/A387M? For ASTM A387 Grade 12 Class 2 ASTM A387/A387M element content, please contact us.
| Element | Min | Max | Similar |
|---|---|---|---|
| Mo | 0.4500 | 0.6000 | - |
| Cr | 0.8000 | 1.1500 | - |
| P | - | 0.0350 | - |
| S | - | 0.0350 | - |
| Mn | 0.4000 | 0.6500 | - |
| Si | 0.1500 | 0.4000 | - |
| C | 0.0500 | 0.1700 | - |
| S | - | 0.0400 | - |
| Si | 0.1300 | 0.4500 | - |
| S | - | 0.0250 | - |
| P | - | 0.0250 | - |
| Mo | 0.4000 | 0.6500 | - |
| Mn | 0.3500 | 0.7300 | - |
| Cr | 0.7400 | 1.2100 | - |
| C | 0.0400 | 0.1700 | - |
ASTM A387 Grade 12 Class 2 ASTM A387/A387M Mechanical properties
The mechanical properties of ASTM A387 Grade 12 Class 2 ASTM A387/A387M metals determine the range of usefulness of a material and establish the service life that can be expected. Mechanical properties are also used to help classify and identify material.
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV/Ku (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 282 (≥) | 549 (≥) | 24 | 11 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 331 |
ASTM A387 Grade 12 Class 2 ASTM A387/A387M Physical properties
The physical properties of ASTM A387 Grade 12 Class 2 ASTM A387/A387M include high strength, low weight, durability, ductility and resistance to corrosion. Steel, as we all know, offers great strength though it is light in weight. In fact, the ratio of strength to weight for steel is the lowest than any other building material available to us.
| Temperature (°C) |
Modulus of elasticity (GPa) |
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) |
Specific thermal capacity (J/kg·°C) |
Specific electrical resistivity (Ω mm²/m) |
Density (kg/dm³) |
Poisson's coefficient, ν |
|---|---|---|---|---|---|---|---|
| 12 | - | - | 0.34 | - | |||
| 748 | 323 | - | 23.3 | 342 | - | ||
| 498 | - | 44 | 34.2 | 223 | 441 |
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