GB EH36 GB 712 structural steel
shipbuilding steel Product Introduction
GB EH36 GB 712 is the most popular, versatile, and preferred steel grade in China. It is used in a variety of industries such as construction, industrial, military, and marine applications. It is also one of the most commonly used steel grades in Europe and the United States.
shipbuilding steel Product Details
GB EH36 GB 712 Chemical Element
Carbon, Silicon, Manganese, Phosphorus, Sulfur are the main basic elements in GB EH36 GB 712.
Carbon is the most important hardening element in steel.
Silicon helps to strengthen the strength. Like manganese, silicon is used to maintain the strength of steel during steel production.
Manganese is the important austenite stabilizing elements contribute to the formation of texture structure and increase the firmness, strength and wear resistance.
Phosphorus is a harmful element. Reducing the plasticity and toughness of steel and appearing cold brittleness. It can significantly increase the strength of steel, and improve the atmospheric corrosion stability. The content should be limited to less than 0.05%.
Usually sulfur is a harmful element, which makes the hot brittleness of steel high, and the content of sulfur is limited to less than 0.05%.
| Element | Min | Max | Similar |
|---|---|---|---|
| Mo | - | 0.0800 | - |
| Ni | - | 0.4000 | - |
| Cr | - | 0.2000 | - |
| Cu | - | 0.3500 | - |
| V | 0.0500 | 0.1000 | - |
| Nb | 0.0200 | 0.0500 | - |
| Ti | - | 0.0200 | - |
| S | - | 0.0250 | - |
| P | - | 0.0250 | - |
| Si | - | 0.5000 | - |
| Mn | 0.9000 | 1.6000 | - |
| C | - | 0.1800 | - |
GB EH36 GB 712 Mechanical Properties
Introduction of mechanical properties GB EH36 GB 712:
Yield point(σs)When the stress of GB EH36 GB 712 or specimen exceeds the elastic limit in tension, even if the stress does not increase, the GB EH36 GB 712 or specimen will continue to undergo obvious plastic deformation. This phenomenon is called yielding, and the minimum stress value when yielding occurs is called yield point.
Tensile Strength(σb) : The maximum stress of GB EH36 GB 712 during tension from the beginning to the time of fracture. It indicates the ability of GB EH36 GB 712 to resist fracture.
Elongation(δs) : The percentage of the plastic elongation length to the original sample length is called elongation.
Yield-strength ratio(σs/σb) : The ratio of yield point (yield strength) to tensile strength of GB EH36 GB 712 is called its yield strength ratio. The greater the yield-strength ratio, the higher the reliability of structural parts.
Hardness: Hardness is the ability of GB EH36 GB 712 to resist hard objects pressing into its surface. The higher the hardness, the better the wear resistance.
| 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) |
|---|---|---|---|---|---|---|
| 561 (≥) | 596 (≥) | 12 | 44 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 211 |
GB EH36 GB 712 Physical Properties
The physical properties of GB EH36 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 | - | - | 0.12 | - | |||
| 918 | 545 | - | 32.3 | 123 | - | ||
| 838 | - | 34 | 22.2 | 421 | 431 |
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