9SMn28
1.0715Free-cutting steel with high sulfur for excellent machinability. Very similar to 11SMn30 — historical German designation that is still widely referenced. Lower C variant preferred for some screw machine products. Used for high-volume automatic lathe parts, screws, nuts, pins, and bushings. ≈ AISI 1215.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1215 (approx) | — | REF |
| 🇪🇺 | EN | Europe | 9SMn28 | 1.0715 | 100% |
Sources: ASTM A29, EN 10087
Mechanical properties — Pro
Cold worked
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Elastic Modulus | ||
| Density |
General
| Property | Value | Unit |
|---|---|---|
| Hardness HB |
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