I have two questions. 1) Can I s

[LeonhardEuler]

I have two questions.

1) Can I specify a 1/4" PJP flare weld for a tubular butt connection if the tubes are 3/8" thickness.

2) If an aluminum connection is a CJP groove weld does the weld need to be checked if the member passes code checks? Main question here is are aluminum fillers weaker than aluminum shapes.

Thanks

 

[drawoh]

LeonhardEuler,

You understand don't you what aluminium shape normally are heat treated, before you weld them?

--
JHG

 

[gtaw]

Most aluminum will lose strength and ductility when welded. For instance, 6061-T6, a popular alloy used for structural application looses 40% of its tensile strength and 50% of its yield strength if everything is done properly. It is a disaster waiting to happen if the design is based on "as wrought" conditions instead of "as welded" conditions.

Best regards - Al

 

[LeonhardEuler]

Yes, member passed code checks with reduced heat affected strength. Talking specifically about the weld geometry.