Strength Welds

All welds are structural to some extent even though they might just be used to build up a piece of metal. In structural work we used full penetration, partial penetration, fillet and J-bevel groove welds. The allowable stresses are governed by your controlling code.

Thanks.

Is there any code / specification refereneces available ?

In the United States, for building applications, you may refer to:

AWS D1.1 STRUCTURAL WELDING CODE-STEEL from American Welding Society

Welding in bridge construction is covered by AWS D1.5.

Other applications (pressure vessels, automotive, aerospace, etc.) may have different requirements...

Full (not partial) penetration welds are those butt welds and fully penetrant (fully welded) looks like the base metal, and its strength is equal (or more than) the strength of base metal.

But if you used the partial penetration weld, in this case its strength shall be a percent from the full strength of the base metal.

Both earlier comments are true. "Full strength" is not a term that I am familiar with, and it certainly does not mean "as strong as the parent metal". If you examine any code (certainly the ones I've seen) there are a range of different types of welded joint and a range of different allowable stresses that relate to each. The stress that is allowable is essentially a combination of the base/weld material property, stress concentration arising out of the joint configuration (including weld penetration), any heat treatment (which relates to residual stresses) and the stress load type over time that the joint will be subject to (i.e. fatigue factors)

Dear Sirs,

I also have this same question, and I don't feel it has been answered in the posts.

I also come across the term "strength welds" on welded valve bonnets quite often, but does the term "strength weld" simply mean that the weld is a full penetration weld which will have at least the same strength as the base metal?