EN3B also known as 070m20, available in rounds, flats, squares & hexagons. En3b is mild steel suitable for welding and general machining. En3B mild steel can be cut, drilled or fabricated to your requirements.
EN3B bright Mild Steel (070m20) used to be the most popular specification of bright Mild Steel available. It has since been replaced by steels that have a tighter chemical analysis.
EN3B Bright Mild Steel is now a general purpose Steel that is suitable for welding, can be case-hardened and is good for general machining. EN3B is generally used in engineering applications that will not be heavily stressed.
EN3B is general engineering steel which is suitable in applications where heavy stresses and heat treatment are not involved.
It is bright drawn / turned mild steel with good machinability but poor hardenability, and is used in a variety of general engineering applications. EN3B can be case hardened and is normally used in the supplied condition. The material promotes good weldability characteristics.
Typical Applications:
- Shafts & rollers
- Machinery parts
- Threaded bars
- Spindles & axles
- Low stress engineering applications
Key features:
- Suitable for low stress engineering applications
- Can be case hardened
- Good for general machining
- For general engineering use
- Good weldability
INTERNATIONAL SPECIFICATION COMPARISONS of EN3B (070M20) Steel :
| BRITISH BS 970:1991 | 070M20 |
| BRITISH BS 970:1955 | EN3B |
| SWEDISH SS | 1370 |
| GERMAN DIN | CK20 |
| AMERICAN SAE | 1021 |
| FRENCH AFNOR | XC18 |
| EUROPEAN STANDARD | EN10083-1 |
| EUROPEAN STEEL NO. | 1.1151 |
| EUROPEAN STEEL NAME | C22E |
NEW ARISE METAL is a supplier of EN3B (070m20) leaded steel to local and national businesses. We stock EN3B and leaded in bright bar, black round bar, hexagon and blocks. You can email us at