ASME requirement for attachement material

[hamdi1984]

can we use a not listed material as an attachement welded directly to a pressure retaining part , for example a S235 Jr attachement welded directly to an SA 516 Gr 70 shell

 

[metengr]

Yes, provided the material is determined to be weldable in accordance with ASME Section IX. In other words you would have to qualify a welding procedure using this material in combination with a pressure retaining material (Section VIII, Div 1). Section I limits the carbon content to 0.35% or less for all materials joined to pressure retaining materials.

 

[weldtek]

Actually this material is assigned as P 1 Gr 1. So you should be ok.

 

[Kiwi2671]

Weldtek,
Cannot locate S235 JR in ASME IX 2010 QW422 - where did you find it ?
Cheers,
Kiwi

 

[metengr]

Code Case 2720 for Section IV use.

 

[weldtek]

Kiwi,
Sec IX, App D - Page 260 current ed.

 

[Kiwi2671]

Thanks Weldtek,
As it is Non Mandatory P-Numbers does that mean they are classed as Assigned or Un-Assigned materials ? (Or is that Listed or Unlisted materials ?)
Cheers,
Kiwi

 

[weldtek]

kiwi,
App D is simply another way to look up a material to determine it's assigned P number. QW 422 lists materials numerically by their ASTM number where App D lists them numerically by P number.
If one knows the the ASTM number QW 422 is normally used to determine the assigned P number but, App D is a more convenient place to find all materials having the same P number.