Hi,
The problem is allowable stress for SA 358 304L in B31.3 which is known in CAESARII data base, but when you select A358 304L for example cl1, all of allowable stresses change to zero.
On the contrary in B31.1 the allowable stresses are known for A358 304L cl1 and are zero for A358 304L. If you search in B31.3 and B31.1, both materials are known for these codes. Whould you guide me what is the matter?

Yes and No - you need to be careful with what you're looking at. For example, if you search on "A358 304 CL1" you find two entries:

1) A358 304 CL1 #193 "All Codes"
2) A358 304 CL1 #193 "B31.1"

Line #2 above is the entry for "A358 304 CL1" for the B31.1 piping code, and this entry will have the B31.1 allowable stresses. If you select this material for any other piping code, the allowable stresses are blank.


Similarly if you search on "A358 304L" you find these two entries:

1) A358 304L #196 "All Codes"
2) A358 304L #196 "B31.3"

Line #2 above is the entry for "A358 304L" for the B31.3 piping code, and this entry will have the B31.3 allowable stresses. If you select this material for any other piping code, then again allowable stresses are blank.

This is the purpose of the "All Codes" entry, it just contains mechanical properties. If you want to use such an entry in your run, you can do so, but you'll have to enter the allowable stress manually for each of your temperature values.

Friends,
I am looking for allowable stresses and other properties (Yield, coefficient of epansion etc) of ASTM A358 304L CL2. Where can I find it?

I am thinking to use the properties of A358 304L as CL2 is also same material, only thing is that it is having double welding (as per ASTM spec). The double welding (in my opinion) needs to be taken care only for thickness calculations (using quality factors Ej). Please correct me if I am wrong.

Should I use the allowable stress values for A358 304L or look somewhere else?