Welding factors Titanium, Alloy20 and Hastelloy276

[Leendert]

Can somebody tell me the factor I have to apply when I convert a labour norm for Carbon Steel for making a weld to a labour norm for the following materials:

Titanium
Alloy20
Hasteloy276

Many thanks in advance

Leendert de Geus

http://www.costengineering.nl/

http://nl.linkedin.com/in/leendertdegeus

 

[metengr]

Leendert;
Can you explain what is a labour norm? Are you asking about the time involved by a welder to weld the above materials with all conditions being equal?

 

[Leendert]

@metengr

Indeed the time involved for a welder under equal conditions. So location and wallthickness. The only difference is the material. For Example according the Linde normen the factor between CS and SS is 1.3

http://www.costengineering.eu/

http://nl.linkedin.com/in/leendertdegeus

 

[Guest102023]

Having been involved with such labour factors in the past, I found they are erratic at best when applied to welding - the estimates can vary in the extreme based on small changes in assumptions. This approach probably makes sense when making the relatively small step from carbon steel to stainless steel, for example, but titanium and superalloys are a whole different game. For example, titanium welding requires much more effort for shielding gas, specialized equipment, even a work area isolated from the other dirtier work going on. Inspection levels and repair rates also may be different. Personally I would be wary of this approach when stretched so far.

IMO a good source of information would be fab shops who base their factors on actual past experience.

 

[moltenmetal]

brimstoner has it right, I'm afraid. This approach is doomed to failure, ESPECIALLY for titanium but to some degree for C276 and even A20. You could buy yourself a world of hurt by relying on this kind of estimate.

 

[Leendert]

Thank you for your advice. We will contact our contacts in the construction world to see if they can help us.

Again many thanks for your advice

http://www.costengineering.eu/

http://nl.linkedin.com/in/leendertdegeus