Hello, I have a situation where APPI 5L (PSL 2) X65 is being used for temperatures below -29 deg C by complying with the code (B31.4) requirement of Charpy Impact Test. However, there is no allowable stress, Elastic modulus, co-efficient of expansion, etc. for this temperature available in B31.3 for this material at this temperature. I just need a head's up on where to look for this information. Is it available in any other code or should ti be obatined from the vendor supplying the pipe? thanks in advance, Harish Lakshmanan Edmonton, Canada.