GB Grade DH 620 GB 712
shipbuilding steel plate Product Introduction
GB Grade DH 620 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.
Our company has established long-term and stable cooperative relations with China Iron and Steel Association, Iron and Steel Association and iron and steel enterprises all over the year, ensuring the production of high-quality GB Grade DH 620 GB 712 steel and giving preferential prices. Our GB Grade DH 620 GB 712 steel products are exported to more than 70 countries and regions overseas and have received good reviews.
Application: Structural steel for ships and marine engineering.
Heat treated: 1498°C - 1277°C.
shipbuilding steel plate Product Details
GB Grade DH 620 GB 712 Chemical element
For GB Grade DH 620 GB 712 datasheet and GB Grade DH 620 GB 712 chemical composition, please see the table below.
| Element | Min | Max | Similar |
|---|---|---|---|
| Si | - | 0.5500 | - |
| S | - | 0.0250 | - |
| P | - | 0.0250 | - |
| N | - | 0.0200 | - |
| Mn | - | 1.7000 | - |
| C | - | 0.2000 | - |
GB Grade DH 620 GB 712 Mechanical properties
The resistance of GB Grade DH 620 GB 712 to damage under load is called its mechanical properties. The mechanical properties of steel materials are the main basis for the design and material selection of parts. The mechanical properties of steel materials will be different with different loading properties (such as tension, compression, torsion, impact and cyclic loads). Common mechanical properties include strength, plasticity, hardness, impact toughness, multiple impact resistance and fatigue limit.
The mechanical properties of GB Grade DH 620 GB 712 is in line with GB 712. The main properties as below:
| 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) |
|---|---|---|---|---|---|---|
| 535 (≥) | 296 (≥) | 22 | 44 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 |
GB Grade DH 620 GB 712 Physical properties
The physical properties of GB Grade DH 620 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 |
|---|---|---|---|---|---|---|---|
| 11 | - | - | 0.32 | - | |||
| 572 | 664 | - | 44.3 | 234 | - | ||
| 444 | - | 43 | 12.2 | 313 | 123 |
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Committed to strict quality control and dedicated customer service, we have an experienced production staff ready to meet your needs and ensure customer satisfaction. We guarantee you a pleasant stay in China.
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If you have more needs and questions about GB Grade DH 620 GB 712 steel, we are happy to advise you!
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