GB Grade EH 550 GB 712
shipbuilding steel plate Product Introduction
GB Grade EH 550 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 is world class raw iron and steel materials supplier. GB Grade EH 550 GB 712 is one of our main steel products. Other than fresh production, we also have large GB 712 stocks to meet urgent demands of clients. The GB Grade EH 550 GB 712 is available in a variety of standard sizes and can also be customized according to customer needs. In addition, we provide processing services, such as: cutting, bending, drilling, welding and other processing services.
Application: Structural steel for ships and marine engineering.
Heat treated: 1141°C - 1559°C.
shipbuilding steel plate Product Details
GB Grade EH 550 GB 712 Chemical element
GB Grade EH 550 GB 712 is an alloy of iron and carbon and other elements. Because of its high tensile strength and low cost, it is a major component used in buildings, infrastructure, tools, ships, automobiles, machines, appliances. The GB Grade EH 550 GB 712 chemical composition determined by ladle analysis shall comply with the specified values of the following table.
| Element | Min | Max | Similar |
|---|---|---|---|
| Si | - | 0.5500 | - |
| S | - | 0.0250 | - |
| P | - | 0.0250 | - |
| N | - | 0.0200 | - |
| Mn | - | 1.7000 | - |
| C | - | 0.2000 | - |
GB Grade EH 550 GB 712 Mechanical properties
What is the chemical composition of GB Grade EH 550 GB 712 steel? For GB Grade EH 550 GB 712 Hardness, GB Grade EH 550 GB 712 steel tensile strength, yield strength,elongation, please see 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) |
|---|---|---|---|---|---|---|
| 586 (≥) | 223 (≥) | 33 | 14 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 412 |
GB Grade EH 550 GB 712 Physical properties
The physical properties of GB Grade EH 550 GB 712 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 |
|---|---|---|---|---|---|---|---|
| 44 | - | - | 0.41 | - | |||
| 396 | 358 | - | 31.3 | 413 | - | ||
| 286 | - | 33 | 41.2 | 311 | 311 |
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