Q550D high strength low alloy steel
Q550D high strength structural steel plate is a high quality construction material with high strength, good weldability and excellent corrosion resistance, Q550D low alloy steel plate can be used in bridges, buildings, ships, petrochemical and other applications.
Features of Q550D low alloy steel sheet:
1. high strength: the yield strength of Q550D low alloy structural steel reaches more than 550MPa, with high tensile strength and impact resistance, able to withstand large loads and deformation.
2. good weldability: Q550D high strength steel plate adopts advanced smelting and rolling process, which has low carbon equivalent and good welding performance, and can meet the welding requirements of various complex structures.
high strength low alloy steel sheet Chemical Composition
| C% max | Si% max | Mn% max | P% max | S% max | Cu% max | Cr% max | Ni% max | Mo % max | B % max | V % max | Nb% max | Ti % max |
| 0.2 | 0.80 | 1.7 | 0.02 | 0.010 | 0.5 | 1.5 | 2 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 |
hhigh strength low alloy mechanical property
| C% max | Si% max | Mn% max | P% max | S% max | Cu% max | Cr% max | Ni% max | Mo % max | B % max | V % max | Nb% max | Ti % max |
| 0.2 | 0.80 | 1.7 | 0.02 | 0.010 | 0.5 | 1.5 | 2 | 0.70 | 0.005 | 0.12 | 0.06 | 0.05 |
| Re yield strength Mpa min | Re yield strength Mpa min | elongation% min | Energy and temperature | |||||||||
| 0 | -20 | -40 | -60 | |||||||||
| t≤50 | 50-100 | 100-150 | t≤50 | 50-100 | 100-150 | 16 | J | J | J | J | ||
| 550 | 530 | 490 | 640-820 | 640-820 | 590-770 | 47 | 47 | 34 | 34 | |||
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