LTCS vs. CS - Eng-Tips

Are you asking about any material form specifically?

In the piping world, LTCS usually refers to material from the A 333 specification.

I don't know that there is a clear definition of LTCS in the ASME realm, but if you look at the A 333 spec, it will guide you to which grades are impact tested at different low temps. thank you all for these FAST answers ! (this was a general question, not linked to a particular grade)

Be carefull saying LTCS is "carbon steel that is suitable for the specified MDMT", one can understand that CS is "carbon steel that is NOT suitable for the specified MDMT" !! =)

I 've also already seen ITCS for Impact Tested Carbon Steel, that is probably a bit better than LTCS but still unsufficient, because testing temperature can be anything...

I agree with you, for me there is no clear definition of LTCS : we use the LTCS term just to show that MDMT is "quite low" and that material compatibility with MDMT shall be carefully checked. The use of selected CS grade/heat treatment delivery conditions/thickness/... to be covered by application of selected construction code.

I will try to change our habbits of specifying LTCS that does not mean much to me, and find another way to say what we meant.

thx again