Carbon steel pipe flange material 11 416.1 ??

[cornemo]

I have received a test report from a carbon steel flange on which the material is named 11 416.1 . I don't know this material and google gave me some hits on flanges/equipement from eastern europe. So I guess it's a russian standard or something like that.

Does any of you know a european (or american) equivalent of this material? And if known, can you indicate the origin of this 11 416.1 material?

Thanks in advance for your replies.

 

[metengr]

This designation is a carbon steel from the Czech Republic. It is supplied under CSN with the following composition by mass

C </= 0.020 %
Si </= 0.35
Mn </= 0.50
P </= 0.040
S </= 0.040
Cr </= 0.30
Ni </= 0.30
Cu </= 0.30
Cr+Ni+Cu </= 0.70

It looks like this material is similar to DIN P265 GH

The above information was from Stahlschlussel, Key to Steel, 2007 Edition.

 

[cornemo]

Thanks for your reply. Comparing the certificate of the material with EN specifications I already found the comparison to P265.
One detail which caught my attention is the elongation at rupture, which is only 3,7%. This looks aweful low to me, I would expect something around 25%.

Can anybody explain the 3,7% elongation at rupture?

Thanks in advance for your replies.