The national codes and regulations have calculation rules for the capacity of the welded structures or for
maximum allowable design stresses in the HAZ.
It can be difficult to compare the different codes and regulations because
they often uses different alloys and tempers and different calculation methods.
In BS 8118 the strength of the HAZ is reduced to 0,50 of the strength of the
parent material for the EN AW-6082-T6 alloy.
In DIN 4113 teil 2 the design stress for the HAZ is reduced to 0,48 of the
design stress of the parent material for the same alloy and temper.
In NS 3471 the comparable reduction is 0,48.
When welding a member or a structure it is of importance that the weld is
placed in areas with low stresses. In a beam for example the welding should be done
in the web and not in the flange.
Welded structures (Topic: 12030)