General Product Description
Baosteel's HSLA (High Strength Low Alloy) steels are crafted to deliver outstanding high yield properties. This makes them an incredibly economical choice for purchasers. Typically, employing HSLA steel can lead to a reduction in the amount of material needed for a project.
Despite this reduction, the integrity and security of the construction remain intact. This is possible because HSLA steel enables a decrease in material thickness while still maintaining the necessary strength and resilience. These steels are not only used in standard applications but also in specialized offshore environments, where they are tailored to handle significant load stresses in structures like heavy transporters, steel frameworks, and mobile cranes.
Equivalent Grade of Q550D

Mechanical Properties of Q550D
| Steel Grade | Yield Strength MPa min | Tensile Strength MPa | Elongation % Min | Impact Energy J | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| t≤50 | 50-100 | 100-150 | t≤50 | 50-100 | 100-150 | 0°C | -20°C | -40°C | -60°C | ||
| Q550D | 550 | 530 | 490 | 640-820 | 640-820 | 590-770 | 16 | 47 | 47 | 34 | 34 |
Chemical Composition of Q550D
| Steel Grade | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Q550D | 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 |
Fabrication and Delivery Conditions
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