S185
1.0035The cheapest and lowest-grade structural steel in EN 10025-1. Only tensile strength is guaranteed (290-510 MPa), no guaranteed yield strength, composition, or impact toughness. Used for non-critical structural applications, fences, lightweight frameworks, and temporary structures where only minimum strength is needed.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | S185 | 1.0035 | 100% |
| 🇪🇺 | DIN | Europe | St 33 (old) | — | 90% |
Sources: EN 10025-1:2004, DIN 17100
Mechanical properties
Compatibility verdict
S185 and St 33 (old): 90% 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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