Grade Designations.
| BS EN 10277:2018 | 11SMnPb30 / 1.0718 |
| BS 970:1991 (withdrawn) | 230M07Pb |
| AISI/SAE | 12L13 / 12L14 |
| DIN | — |
| ISO | 11SMnPb30 |
Availability & Supply Condition.
Rounds: 5–210mm | Squares: 5–100mm | Hexagons: 6–75mm AF
Supply condition: Bright Drawn. Centreless Ground available on request for selected sizes.
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 | Pb |
|---|---|---|---|---|---|---|
| 11SMnPb30/1.0718 | 0.14 | 0.05 | 0.90–1.30 | 0.11 | 0.27–0.33 | 0.15–0.35 |
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 | 5–40 / 40–63 / 63–100 | 460–710 / 400–650 / 360–630 | 375 / 305 / 245 | 8 / 9 / 9 |
Hardness values: see our hardness conversion table to convert between HRC, HB, HV and tensile strength.
Typical Applications.
- High-speed automatic screw machine components
- Intricate turned parts requiring excellent finish
- Instrument and clock components
- Hydraulic fittings and connectors
- Medical and dental device components
Key Benefits.
- Superior machinability over non-leaded 230M07
- Excellent surface finish on turned faces
- Higher cutting speeds — improved productivity
- Consistent chip breaking on automatic lathes
- Tight tolerances to BS EN 10278
Remarks & Guidance.
Poor weldability — welding must be avoided. Not intended for heat treatment but can be case hardened for improved wear resistance. REACH/RoHS: lead content means this grade is subject to REACH restrictions in certain applications — confirm suitability before specifying for regulated products. For the non-leaded equivalent see PS QA 001 (230M07).
Relevant Heat Treatment Processes.
This grade responds to the following heat treatment processes. Click any card for temperatures, cooling methods and expected hardness values.
