LTCS vs. CS
LTCS vs. CS
(OP)
Hi mechanician friends
I work on "corrosion" but I also have to deal with the compatibility of materials vs. low temperatures.
Is there a clear definition for Low Temperature Carbon Steel LTCS ?
If not, what do you understand when you see LTCS mentionned ?
Thanks
I work on "corrosion" but I also have to deal with the compatibility of materials vs. low temperatures.
Is there a clear definition for Low Temperature Carbon Steel LTCS ?
If not, what do you understand when you see LTCS mentionned ?
Thanks





RE: LTCS vs. CS
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: LTCS vs. CS
RE: LTCS vs. CS
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.
RE: LTCS vs. CS
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
RE: LTCS vs. CS
One caveat to the above is that most of the manufactured carbon steels listed for use at -20F and above could not meet "specified" absorbed energy values if/when impact tested at -20F.
RE: LTCS vs. CS
I understand the following when LTCS is mentioned. The steel is inclusion free, as much as possible, it gives better mechanical properties including impact strength. Inclusion is controlled by Sulphur and Phosphorus content in steel and adding appropriate fluxes / deslagging methods as in secondary steel-making.
DHURJATI SEN