GB F-40 GB 712
shipbuilding steel plate Product Introduction
GB F-40 GB 712 is an alloy steel composed of iron, carbon, and various other elements, such as manganese, silicon, and phosphorus. It has high tensile strength and good toughness, as well as excellent cold forming properties. The alloy steel also has good resistance to heat, wear, and fatigue. It can be easily machined, welded, and formed with very good surface finish results.
As experienced GB F-40 GB 712 supplier, we can not only provide clients with quantity guaranteed GB 712 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 GB F-40 GB 712 chemical composition, F-40 properties, F-40 density, F-40 strength, F-40 equivalent, etc.
Application: Structural steel for hull.
Heat treated: 1223°C - 1931°C.
shipbuilding steel plate Product Details
GB F-40 GB 712 Chemical element
What is the chemical composition of GB F-40 GB 712? For GB F-40 GB 712 element content, please contact us.
| Element | Min | Max | Similar |
|---|---|---|---|
| N | - | 0.0090 | - |
| Cu | - | 0.3500 | - |
| Ti | - | 0.0200 | - |
| Al | 0.0150 | - | - |
| Nb | 0.0200 | 0.0500 | - |
| V | 0.0500 | 0.1000 | - |
| Mo | - | 0.0800 | - |
| Ni | - | 0.8000 | - |
| Cr | - | 0.2000 | - |
| P | - | 0.0250 | - |
| S | - | 0.0250 | - |
| Mn | 0.9000 | 1.6000 | - |
| Si | - | 0.5000 | - |
| C | - | 0.1600 | - |
GB F-40 GB 712 Mechanical properties
The GB F-40 GB 712 material mechanical properties shall comply with the values given in the following table.
| 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) |
|---|---|---|---|---|---|---|
| 782 (≥) | 386 (≥) | 13 | 33 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 |
GB F-40 GB 712 Physical properties
Basic Physical Properties of GB F-40 GB 712 Steel
| 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 |
|---|---|---|---|---|---|---|---|
| 41 | - | - | 0.43 | - | |||
| 787 | 484 | - | 31.3 | 134 | - | ||
| 554 | - | 43 | 13.2 | 143 | 122 |
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