About EN8M bright bars
EN8M is a re-sulphurised version of EN8. Added sulphur and higher manganese form manganese sulphide inclusions that break chips short — so parts that need medium carbon strength can still be produced at free-cutting speeds.
RoundHexagon (A/F)Cut-to-length
Equivalents and typical composition
| Designation | Standard | C % | Mn % | S % |
|---|---|---|---|---|
| EN8M | BS 970 · 212M44 / 212A42 | 0.36–0.44 | 1.00–1.40 | 0.12–0.30 |
| 1144 | AISI / SAE | 0.40–0.48 | 1.35–1.65 | 0.24–0.33 |
| 44SMn28 | EN 10087 / DIN | 0.40–0.48 | 1.30–1.70 | 0.24–0.33 |
| 46S20 | EN 10087 / DIN | 0.42–0.50 | 0.70–1.10 | 0.15–0.25 |
| EN15AM | BS 970 (old) | Free-machining carbon-manganese grade, used interchangeably with EN8M in many specifications | ||
Typical ranges for reference — exact limits vary by standard and mill. Each supply is backed by the mill test certificate.
Applications
- Turned shafts and spindles for motors, pumps and fans
- Pins, studs and high-volume automotive components
- Hydraulic and pneumatic piston rods (before chroming)
- Any EN8-strength part where cycle time matters
Frequently asked questions
What is EN8M?
A re-sulphurised, free-machining version of EN8 medium carbon steel — similar strength, much faster turning.
Can EN8M be welded?
The high sulphur makes EN8M unsuitable for welding. If the part must be welded, use EN8D / 1045.