Comparison
4130 vs 25CrMo4
AISI/SAE 4130 and 25CrMo4 / 1.7218 are closely related chromium-molybdenum grades at the lighter end of the Q&T family. They are often cross-referenced but are not automatically identical. 25CrMo4 is the European EN designation; 1.7218 is the W.Nr.
Place in the family
25CrMo4 sits below 34CrMo4 and 42CrMo4 in carbon. It is chosen when Cr-Mo is required but 42CrMo4 is unnecessarily heavy. 4130 is the American designation in the same neighbourhood.
- 25CrMo4 – 1.7218 – EN 10083-3
- AISI/SAE 4130 – closely related American designation
- Next step up: 34CrMo4 (4135) and 42CrMo4 (4140)
Condition and certificate
Typically +QT. State diameter, length and the required condition. The certificate carries 25CrMo4 / 1.7218 unless the mill has issued something else.
Frequently asked questions
- Can I order 4130 and receive 25CrMo4?
- Often yes, as an agreed substitution, once chemistry, properties and condition have been checked. If you need the American standard text documented, it must be on the order.
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