Alloy case-hardening steel
17CrNi6-6 / 1.5918 alloy engineering steel
17CrNi6-6 is Ni-Cr case-hardening steel one step above 15CrNi6. Drawings may say ZF1 for W.Nr. 1.5918. It is not ZF1A / 18CrNiMo7-6, which also contains molybdenum.
- Delivery conditions
- +A / +FP / +TH
- Also known as
- 1.5918, ZF1
Designations
- W.Nr.
- 1.5918
- EN standard
- 17CrNi6-6
- DIN
- 17CrNi6-6
- Group
- Alloy engineering steel
What it is used for
Heavy gears and case-hardened shafts.
Limits
18CrNiMo7-6 / ZF1A when Mo is also required. 16MnCr5 when the part is modest.
Delivery
We source 17CrNi6-6 from European mill partners as round bar, flat bar, square bar, cut to your dimensions and ship the certificate with the material. Typical condition: +A / +FP / +TH. 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
17CrNi6-6 can be supplied with a material certificate to EN 10204, depending on producer, dimension and the requirements specified for the delivery. The certificate documents the analysis and the delivery condition — not the finished case hardening, since case and core hardness only arise at the heat treater. If the hardening result is to be documented, that is a separate agreement. EN 10204 3.1 can be supplied on a wide range of our materials.
Dimension programme
| Form | Range | Note |
|---|---|---|
| Round bar | Ø20–180 mm | Case-hardening bar, typically soft annealed or +FP. |
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.