Heat Affected Zone

[DeltaIV]

Anyone has photos or sketch showing Fusion Zone and Heat Affect Zone on TIG Weld butt Joint. Thanks

 

[CoryPad]

Here is a decent schematic image:

http://en.wikipedia.org/wiki/Heat-affected_zone

Regards,

Cory

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[weldtek]

While the description in the file above is accurate, the image shows the HAZ to be wider than the weld. In reality, it's normally a relatively narrow band whose width depends on heat input, material type and other factors, but for manual GTAW on CS, will probably be < 1/8", and most likely around 1/16".