Q620D High Tensil Low Alloy Steel Plates (HSLA)
Q620D high tensile steel is a national standard low-alloy high-strength structural steel plate. Q620D high-strength alloy steel has two delivery states. The control and execution standards are: GB/T1591 special technical conditions; the modulation execution standards are: GB/T16270 special technical conditions.
Q620D high strength low alloy hsla steel grade Q=yield, 620=steel plate yield strength, the unit 620Mpa means that the steel plate can withstand the yield pressure value within 620MPa, D=steel plate grade; D=-20℃.
Q620D high strength steel is often used in the machinery manufacturing industry, such as: heavy industry machinery, engineering machinery, chemical machinery, nuclear power equipment, bridge equipment, port machinery, crane equipment, ship equipment, mining machinery and equipment, etc.
Q620D Hsla Steel Chemical Composition:
| C | Si | Mn | B | Cu | P | S | V | Nb | Mo | Cr | Ni | Ti |
| ≤0.20 | ≤0.80 | ≤1.70 | ≤0.005 | ≤0.50 | ≤0.025 | ≤0.015 | ≤0.12 | ≤0.06 | ≤0.70 | ≤1.50 | ≤2.00 | ≤0.65 |
low alloy steel material
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