Steel Designation to BS EN 10025

[Ussuri]

Structural steel is often specified to BS EN 10025 in the UK. A typical designation would be S275J2G3 for a 275 N/mm2 yield strength steel. The code originally came in to being in 1993 and was replaced in 2004. My question is what does the term 'G3' indicate as I cannot see it in the code. The J terms are indicative of Charpy impact results at different temperatures.

 

[tonyuk]

See

http://www.roymech.co.uk/Useful_Tables/Matter/Steel_Europe.html

Xn = Symbols for special requirements
Deoxidation Method ...G1= Rimming Steel, G2 =Rimming Steel not permitted,
Delivery conditions...G3 = Normalised/ Normalised Rolled, G4 = Manufactures Discretion.