11SMn30
1.0715Sulfur-manganese free-cutting steel, not intended for heat treatment. Excellent machinability (significantly better than standard carbon steels). Used for high-volume CNC-machined parts: bolts, nuts, pipe joints, bushings, fittings, and other turned components.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | SAE | USA | SAE 1213 | — | REF |
| 🇪🇺 | EN | Europe | 11SMn30 | 1.0715 | 100% |
| 🇪🇺 | DIN | Europe | 9SMn28 (old) | — | 98% |
| 🇯🇵 | JIS | Japan | SUM22 | — | 88% |
| 🇺🇸 | SAE | USA | SAE 1215 | — | 85% |
| 🇨🇳 | GB | China | Y15 | — | 85% |
Sources: ASTM A29, EN ISO 683-4:2018, DIN 1651, JIS G4804, GB/T 8731
Mechanical properties
Compatibility verdict
11SMn30 and 9SMn28 (old): 98% 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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