Strength of HAZ in Welded A572

[MechAnalyst2112]

Hello! I am welding a 1" plate to a 1/2" plate. Both materials are A572-50. Will the HAZ become annealed? What is the strength in the HAZ? Thanks!

 

[connectegr]

The welding should not effect the strength of the material. Using an appropriate WPS, filler metal, pre-heat, etc.

http://www.FerrellEngineering.com

 

[MechAnalyst2112]

Thanks! I like the answer.

I guess after working with welded 6061 aluminum plates, I expect some sort of similar strength reduction in A572 when heated.

Could you point me to a reference that discusses this topic?

 

[connectegr]

AISC Steel Manual or AWS D1.1

Luckily steel is not like aluminum with regard to welding.

http://www.FerrellEngineering.com

 

[Ron]

Agree with connectegr...no real affect...also agree with the aluminum comment...ain't the same!

 

[metengr]

……….welding a 1" plate to a 1/2" plate. Both materials are A572-50. Will the HAZ become annealed? What is the strength in the HAZ?

The correct answer is no to the first question; the base metal heat affected zone will not be annealed from the heat of welding. Instead, the base metal heat affected zone will consist of an altered microstructure with mechanical properties that vary from lower to higher strength in comparison to the bulk strength properties of the unaffected A 572 base material.

Keep in mind, the altered microstructure and associated mechanical properties is a very narrow band and will be encompassed by the surrounding base material that will remain unaffected from the heat of welding.