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EN10029 specificaton

EN10029 specificaton

EN10029 specificaton

(OP)
What does the G3 indicate in EN10029-8-S355JRG3?

RE: EN10029 specificaton

Is the designation S355JRG3 correct?
S355JR is a steel grade in EN 10025 (Hot rolled products of non-alloy structural steel) edition 1990 + add. 93.
G3 is a designation for fully killed material in the same standard. The combination of S355JR and G3 is not stipulated in this standard.  To have a fully killed steel, you should use S355J2G3.  J2 = Charpy-V -20°C, JR = Charpy-V at +20°C (27J long).
Meanwhile this standard is revised.  In edition 2003 of EN 10025-2, the steel designation is S355JR resp. S355J2.  If you need normalized material, you should order +N.  
EN 10029 is a standard for dimensional tolerances.
I can't identify the "8".  Could it be a "B" indicating the thickness tolerance class?

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