1.0715 (11SMn30) vs 1215
These two grades are listed as equivalents of each other: their chemistry windows overlap and they serve the same applications. They are not always identical — check the differences below before substituting, especially in certified designs.
1.0715 (11SMn30)
Carbon Steel
11SMn30 (1.0715) is Europe’s standard sulfur free-cutting steel under EN 10087: about 0.30% sulfur and almost no silicon, giving fast, clean chip-breaking on automatic lathes without lead. It is the default EN bar grade for high-volume turned parts.
Standards: DIN 1.0715 (11SMn30) · AISI 1215 (near)
1215
Carbon Steel
1215 is a rephosphorized and resulfurized free-cutting steel with very low carbon, built purely for machining speed. It is one of the fastest-cutting bar steels available and a staple of high-volume screw machining.
Standards: AISI 1215 · JIS SUM25 (near) · GB Y12 (near)
Chemical composition compared (%)
| Element | 1.0715 (11SMn30) | 1215 |
|---|---|---|
| C | ≤0.14 | ≤0.09 |
| Si | ≤0.05 | — |
| Mn | 0.90–1.30 | 0.75–1.05 |
| P | ≤0.11 | 0.04–0.09 |
| S | 0.27–0.33 | 0.26–0.35 |
Properties compared
| Property | 1.0715 (11SMn30) | 1215 |
|---|---|---|
| Tensile strength | 380–510 MPa (delivery-condition dependent) | 380–460 MPa (hot rolled, typ.) |
| Machinability | Excellent (reference class for EN free-cutting) | ≈135% of 1212 (typ. rating) |
| Density | 7.85 g/cm³ | 7.85 g/cm³ |
Sourcing either grade?
Nasteel stocks both families from Shenzhen with EN 10204 3.1 mill certificates by heat number.
Ask for a quotationSee full data sheets: 1.0715 (11SMn30) · 1215. Substitution decisions for certified parts stay with the design authority.