39 nicrmo 4 us equivalent

[privateroy]

I have an Italian print that calls out a material of 39NiCrMo4. Do you know what an equivalent US steel would be for this material?

Any help you can provide would be appreciated.

 

[mcgyvr]

I believe ASTM 9840

 

[TVP]

39NiCrMo3 (1.6510) is the current designation according to EN 10083-3. It is roughly equivalent to grade 9840, which appears in ASTM A 519 (seamless tubes) and not much else. It has been relegated to the former SAE standards in SAE J1249.