EN14 is a carbon-manganese steel with about 0.15–0.25% carbon and 1.3–1.7% manganese. The extra manganese gives it more strength and toughness than mild steel while it stays easy to weld, so it suits welded shafts, brackets, levers and forgings that need a little more strength than EN3 or mild steel.
Quick facts
- Type
- Carbon-manganese steel
- Carbon
- About 0.15–0.25%
- Manganese
- About 1.3–1.7%
- Tensile strength
- About 500–650 MPa (normalised)
- Weldability
- Good
- Machinability
- Fair
Equivalent grades
| Standard | Grade |
|---|---|
| BS 970 (old) | EN14A / EN14B |
| BS 970 (new) | 150M19 (close) |
| SAE | 1524 / 1527 (close) |
| IS | 20Mn2 (close) |
Equivalents are close, not identical. Name the grade and standard on the drawing.
Typical chemical composition
| Element | % |
|---|---|
| Carbon (C) | About 0.15–0.25 |
| Manganese (Mn) | About 1.3–1.7 |
| Silicon (Si) | About 0.1–0.35 |
| Sulphur (S) | 0.05 max |
| Phosphorus (P) | 0.05 max |
Values are typical. The exact limits depend on the standard and supplier; ask for the mill test certificate when it matters.
EN14 or EN8?
| EN14 | EN8 | |
|---|---|---|
| Carbon | Lower | Higher (about 0.35–0.45%) |
| Welding | Easier | Needs preheat on thick sections |
| Strength | Similar to slightly lower | Similar |
| Hardening | Limited | Can be induction hardened |
Typical uses
- Welded shafts and spindles
- Brackets, levers and links
- Forged parts for agriculture and transport
- Machine frames that need extra strength
- Studs and bolts of medium strength
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Questions
- Is EN14 weldable?
- Yes. Its low carbon makes it easy to weld, which is why it is chosen over EN8 for welded parts.
- Can EN14 be hardened?
- Only a little. It can be case carburised for a hard surface, but it does not through harden like EN19 or EN24.
- What is the difference between EN14A and EN14B?
- Both are carbon-manganese steels; EN14B has slightly more carbon and is a little stronger.
The figures on this page are typical values for guidance, written by Diemeco from standard engineering practice. They are not a specification: confirm grades and properties with the relevant standard or the supplier's mill test certificate, and tolerances with your workshop. Last checked 22 October 2026.