S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A514 Grade B | K11630 | REF |
| 🇪🇺 | EN | Europe | S690QL | 1.8928 | 100% |
| 🇨🇳 | GB | China | Q690D | — | 93% |
| 🇯🇵 | JIS | Japan | JIS SM570 | — | 80% |
Sources: ASTM A514/A514M, EN 10025-6:2019, GB/T 1591, JIS G3106
Mechanical properties
Compatibility verdict
S690QL and Q690D: 93% composition match
Related materials
C45
1.0503Medium carbon unalloyed quality steel. Good machinability and moderate strength after heat treatment. Widely used for shafts, spindles, pins, studs, and general machine parts.
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S235JR
1.0038General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.
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