Butt weld penetration
Butt weld penetration
(OP)
Is there a general rule or guidline for the minimum amount of penetration? For Example: If you have a Butt joint or 2 pieces of 1/4" thick flat steel edge to edge with no gap and a generic 1/8 Square symbol is used how much or how deep should the penetration in the 2 pieces be?





RE: Butt weld penetration
Penetration of the weld should be at least 50% of the 1/4" thickness.
RE: Butt weld penetration
RE: Butt weld penetration
RE: Butt weld penetration
RE: Butt weld penetration
It sound like you might also want to consider getting a copy of AWS A3.0 terms and definitions. It is very beneficial when becoming familiar with code welding.
RE: Butt weld penetration
RE: Butt weld penetration
In some cases it is possible to achieve a weld with stringth equal to the base metal even if the effective throat is less than the base metal thickness.
So as far as designing something goes, it would be an engineering decision. If you are talking about training purposes such as you would encounter while taking a welding class, it would be dependent upon what the instructor is trying to teach you.
Gerald Austin
Iuka, Mississippi
http://www.weldingdata.com