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mehdi_ohadi
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Join Date: Jul 2008
Posts: 3

Alphanumeric Designations for Materials

02/11/2009 3:32 PM

Hello

What 's different between St 37 & RSt 37 ?

Can you discribe each letter of S235??? what's meaning ?

regards
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Kwetz
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Spain - Member - New Member Engineering Fields - Nuclear Engineering - New Member

Join Date: Oct 2007
Location: Madrid, Spain
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#1

Re: Alphanumeric Designations for Materials

02/12/2009 2:44 AM

Hello mehdi_ohadi,

St37 and RSt37 are old DIN standard designations for plain carbon steel with a rough tensile strength of 420 MPa. The "R" stands for killed steel (RR stands for specially killed, U for rimming steel...)

S235 is a partial designation of a similar plain carbon steel according to EN 10025-2.

It's a Structural steel with nominal yield strength of 235 MPa (for t< 16 mm).

You can see more information on this previous thread:EN 1.0025-S235JRG2 Material and Different Classes

Kind regards

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