Can I use 6013 for single pass Corten-A ?

[TechnicAl]

You're one in a million Al - literally

is that good...

 

[TechnicAl]

Lincoln are actually contradicting themselves
https://www.lincolnelectric.com/en-us/support/welding-solutions/Pages/a588-steels-detail.aspx

here they recommend C1, C2 or C3 which are 80 grades....the Conarc 60G is a 90 grade (containing Mo which in this case doesnt help)

I think I should tell them the error of their ways

 

[Pete.]

is that good...

It is in this instance.

IMO it's a case of "when TechnicAl speaks, the rest of the room should listen"

 

[addjunkie]

I think I should tell them the error of their ways

Question is.....would they listen!

 

[TechnicAl]

Question is.....would they listen!

probably not.........they stopped listening to me years ago....before I was fired....

 

[denlow60]

It is in this instance.

IMO it's a case of "when TechnicAl speaks, the rest of the room should listen"

Yes, you're right. you who have no understanding of what is being said you must keep still and listen to what the master says.
but others who do know what they are talking about can say something.

 

[TechnicAl]

Yes, you're right. you who have no understanding of what is being said you must keep still and listen to what the master says.
but others who do know what they are talking about can say something.

No one has stopped you

please carry on if you have further comments / questions

Im sorry I just dont know what your point is

There is no argument as far as Im concerned

 

[Pete.]

Yes, you're right. you who have no understanding of what is being said you must keep still and listen to what the master says.
but others who do know what they are talking about can say something.

Isn't that how it's supposed to be? The one who knows talks, the ones who know less, listen.

 

[Mid Wales welder]

Hydrogen cracking is the culmination of 3 criteria, Hydrogen, Susceptible Structure (CEV), and Stress........If any one is low it wont crack.......3mm garden gate stress is low, 7018s are low H even unbaked in this instance, and the CEV quoted on your list is the MAX so will be much lower.
So to answer your question....the CEV that needs preheat is 50, below that it depends on other factors

and yes I have a few years experience, but I have read about it......after I wrote it.

Would a 4th smaller consideration be thickness? As in if the material below the combined thickness level to need ore heat?

 

[TechnicAl]

The thickness is included in the theory under stress......the thicker the plate the higher the stiffness the higher the stress levels generated.
But yes when your doing the preheat calcs the thickness is important.....which is why I said that a 3mm garden gate (the OPs job) wouldnt need preheating

plus for most calcs its combined thickness thats used....so 3mm joined to 3mm you use 6mm in the calcs (but I assume you know that)

 

[Mid Wales welder]

The thickness is included in the theory under stress......the thicker the plate the higher the stiffness the higher the stress levels generated.
But yes when your doing the preheat calcs the thickness is important.....which is why I said that a 3mm garden gate (the OPs job) wouldnt need preheating

plus for most calcs its combined thickness thats used....so 3mm joined to 3mm you use 6mm in the calcs (but I assume you know that)

Good stuff. Yes I knew lol, just thought it was missing from the comment (but then I read back ) 6mm combined for a butt weld and 9mm combined for a fillet.