S960Q
1.8941Ultra-high-strength quenched structural steel — YS 960 MPa min. Near the top of EN 10025-6 range. Approaches tool-steel-level strength while remaining weldable (with strict preheat/interpass control). Used for the most weight-critical structural applications: mobile crane booms, mining equipment, military vehicles, and specialty trailer chassis. Significantly reduces section thickness vs S355.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | S960Q / 1.8941 | 1.8941 | 100% |
Sources: EN 10025-6
Chemical composition comparison (wt%)
Side-by-side: S960Q (EN 10025-6) vs S960Q / 1.8941 (EN) (EN 10025-6)
| Element | S960Q (EN 10025-6) | S960Q / 1.8941 (EN) | Overlap |
|---|---|---|---|
| C | — | 0–0.2% | — |
| Si | — | 0–0.8% | — |
Mechanical properties
Compatibility verdict
S960Q and S960Q / 1.8941: 100% 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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