GB Grade B GB 712
shipbuilding steel plate Product Introduction
GB Grade B GB 712 is one of the world's most popular and versatile steel grade. It is used in a wide range of applications, from bridge building and other large structures, to vehicle parts, industrial machinery, and shipbuilding. It has excellent properties, including good strength, toughness, heat resistance, and machinability. Therefore, it is an excellent choice for a wide variety of projects and applications.
Our company has steel products billets, steel products, hot-rolled sheets, cold-drawn sheets, seamless steel pipes, steel bars and other products. GB Grade B GB 712 has a good reputation in the market, high-quality products, and thoughtful service in the steel industry. GB Grade B GB 712 has complete specifications, and the products are widely used in aerospace, petrochemical, and construction projects, with low requirements for products, easy processing and low dimensional accuracy requirements. And provide cutting, bending, welding, drilling, and other processing services.
Application: Structural steel for hull.
Heat treated: 1682°C - 1479°C.
shipbuilding steel plate Product Details
GB Grade B GB 712 Chemical element
GB Grade B GB 712 chemical composition has significant on GB Grade B GB 712 mechnical properties. Among all the GB Grade B GB 712 elements. Carbon is hardening element. Silicon helps to strengthen the strength. Manganese is the important austenite stabilizing elements contribute to the formation of texture structure and increase the firmness, strength and wear resistance. Phosphorus reduces the plasticity and toughness and appearing cold brittleness. Meanwhile, It can significantly increase the strength of steel, and improve the atmospheric corrosion stability. Sulfur makes the hot brittleness of steel high.
| Element | Min | Max | Similar |
|---|---|---|---|
| Ni | - | 0.3000 | - |
| Cr | - | 0.3000 | - |
| Cu | - | 0.3500 | - |
| S | - | 0.0350 | - |
| P | - | 0.0350 | - |
| Mn | 0.6000 | - | - |
| Si | - | 0.3500 | - |
| C | - | 0.2100 | - |
| Mn | 0.8000 | - | - |
| Mn | 0.8000 | 1.2000 | - |
GB Grade B GB 712 Mechanical properties
GB Grade B GB 712 properties, GB Grade B GB 712 Mechanical Properties, GB Grade B GB 712 hardness, GB Grade B GB 712 tensile strength, yield strength
| 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) |
|---|---|---|---|---|---|---|
| 765 (≥) | 312 (≥) | 13 | 41 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
GB Grade B GB 712 Physical properties
The physical properties of GB Grade B GB 712 steel incorporate high quality, low weight, solidness, ductility and protection from erosion.
| 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 |
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.43 | - | |||
| 182 | 729 | - | 22.3 | 332 | - | ||
| 943 | - | 44 | 11.2 | 441 | 131 |
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