ASTM A387 Gr5 Structural Steel Plate
boiler steel sheet Product Introduction
ASTM A387 Grade 5 Class 2 ASTM A387/A387M is a material-graded steel alloy used in the production of pressure vessels and boilers. Constructed from chrome molybdenum, the alloy has a high-temperature tolerance of up to 600°F (316°C) with a tensile strength of no less than 90 ksi (620 MPa). ASTM A387 Grade 5 Class 2 ASTM A387/A387M provides superior performance and reliability in a variety of pressure-containing applications, specifically for high-pressure/high-temperature operations, such as boilers and other pressure vessels.
Pressure Vessel And Boiler Steel Plate Product Details
ASTM A387 Grade 5 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.
For ASTM A387 Grade 5 Class 2 ASTM A387/A387M datasheet and ASTM A387 Grade 5 Class 2 ASTM A387/A387M chemical composition, please see the table below.
| Element | Min | Max | Similar |
|---|---|---|---|
| Mo | 0.4500 | 0.6500 | - |
| Cr | 4.0000 | 6.0000 | - |
| P | - | 0.0350 | - |
| S | - | 0.0300 | - |
| Mn | 0.3000 | 0.6000 | - |
| Si | - | 0.5000 | - |
| C | - | 0.1500 | - |
| P | - | 0.0400 | - |
| Si | - | 0.5500 | - |
| S | - | 0.0250 | - |
| P | - | 0.0250 | - |
| Mo | 0.4000 | 0.7000 | - |
| Mn | 0.2500 | 0.6600 | - |
| Cr | 3.9000 | 6.1000 | - |
ASTM A387 Grade 5 Class 2 ASTM A387/A387M Mechanical Properties
The mechanical properties of ASTM A387 Grade 5 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) |
|---|---|---|---|---|---|---|
| 478 (≥) | 253 (≥) | 33 | 24 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 411 |
ASTM A387 Grade 5 Class 2 ASTM A387/A387M Physical Properties
The following lists give ASTM A387 Grade 5 Class 2 ASTM A387/A387M properties such as physical properties, density, thermal expansion.
| 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 |
|---|---|---|---|---|---|---|---|
| 22 | - | - | 0.22 | - | |||
| 729 | 674 | - | 31.3 | 121 | - | ||
| 885 | - | 32 | 42.2 | 233 | 432 |
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