Spring steel
50Mn7 / 1.0913 alloy engineering steel
50Mn7 (1.0913) is manganese-alloyed spring steel — the simplest grade in the family, where manganese alone carries the hardenability. A DIN 17221 designation with no EN 10089 name.
- Delivery conditions
- untreated, soft annealed or +QT
- Also known as
- 1.0913
Designations
- W.Nr.
- 1.0913
- DIN
- 50Mn7
- Group
- Alloy engineering steel
What it is used for
Simpler springs and clamping parts where the Si and Cr grades are more than the job requires.
Limits
Modest hardening depth. 56Si7 or 55Cr3 when the section grows or the drawing specifies an EN standard.
Delivery
We source 50Mn7 from European mill partners as round bar, flat bar, square bar, cut to your dimensions and ship the certificate with the material. Typical condition: untreated, soft annealed or +QT. From a single cut piece to larger lots — with no minimum charge, so you do not have to buy a full commercial length to get what you need.
Certificates and documentation
50Mn7 can be supplied with a material certificate to EN 10204, depending on producer, dimension and the requirements specified for the delivery. The heat and the delivery condition are what carry the certificate — a spring or bearing grade only gets its service properties after treatment, and that part is documented by whoever performs it. EN 10204 3.1 can be supplied on a wide range of our materials.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Ø2–35 mm drawn, Ø15–220 mm hot rolled, Ø230–710 mm forged | Drawn to DIN 671, hot rolled to DIN 1013, forged to DIN 7527. Bars in 3 or 6 m. State Ø and condition. |
| Flat bar | 20 × 3 mm to 200 × 20 mm | Flat spring steel in 5 or 6 m bars, cut to fixed length on request. Rounded edges or mill edge — state which. |
| Square bar | Same drawn and hot-rolled range as round | State side length and condition. Not every grade is run in square. |
The range is a delivery programme, not a stock statement. Length is cut to your drawing.
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Send your enquiry
State grade, dimensions and quantity — or attach a drawing. We reply with a quote.