Grade Designations.
| BS EN 10277:2018 | 11SMn30 / 1.0715 |
| BS 970:1991 (withdrawn) | 230M07 |
| AISI/SAE | 1213 / 1215 |
| DIN | — |
| ISO | 11SMn30 |
Availability & Supply Condition.
Rounds: 5–210mm | Squares: 8–125mm | Hexagons: 6–90mm AF
Supply condition: Bright Drawn, Bright Turned, or Centreless Ground depending on size and profile.
Cut to length from 1 piece — −0/+2mm standard tolerance — 2–3 day turnaround — Cutting service details ›
Chemical Analysis.
Values shown as percentages by weight (% wt). Values are ranges unless stated as maxima.
| Designation | C max | Si max | Mn | P max | S |
|---|---|---|---|---|---|
| 230M07 | 0.15 | 0.05 | 0.90–1.30 | 0.09 | 0.25–0.35 |
| 11SMn30/1.0715 | 0.14 | 0.05 | 0.90–1.30 | 0.11 | 0.27–0.33 |
For full chemical analysis with heat number, request an EN 10204 3.1 material test certificate when ordering — available on all alloy grades. Certificate types explained ›
Mechanical Properties.
Values shown for standard supply condition. Properties vary by section size and heat treatment condition.
| Condition | Size (mm) | Tensile Rm (N/mm²) | Proof Rp0.2 (N/mm²) | A% |
|---|---|---|---|---|
| CD | ≤16 / >16–40 / >40–100 | 510–810 / 460–710 / 360–630 | 440 / 375 / 245 | 6 / 8 / 9 |
Hardness values: see our hardness conversion table to convert between HRC, HB, HV and tensile strength.
Typical Applications.
- Control linkages and low-stress shafts
- Hydraulic fittings and brake components
- Wheel nuts, bolts and studs
- Casings, handles and instrument parts
- Gearbox components (if case hardened)
Key Benefits.
- Exceptional machinability on automatic lathes
- Extends tooling life significantly
- Cleaner surface finish on turned components
- Tight tolerances to BS EN 10278
- Consistent chemistry for repeatable results
Remarks & Guidance.
Poor weldability — welding should be avoided. Can be case hardened to improve wear resistance. By convention many producers omit the mechanical properties test; material is then supplied 'to analysis only'. A leaded version (PS QA 002 — 230M07Pb) allows even faster machining speeds.
Relevant Heat Treatment Processes.
This grade responds to the following heat treatment processes. Click any card for temperatures, cooling methods and expected hardness values.
