Structural Steel for Low Temperature Applications
Structural Steel for Low Temperature Applications
(OP)
Can anyone advise the most available grades of structural steel available for use at temperatures as low as -40degC?
Specifically I am interested in channel and hollow section availability. My company (OEM) has a number of enquiries for equipment (baseplates, lifting beams)which must be suitable for this condition at site and we have struggled in the past to get readily available material (unless we pay for supplier to cast/roll 40 tonnes at a time!). Our solution has been to purchase steel rated down to -20degC and re-test / re-certify for -40degC.
Specifically I am interested in channel and hollow section availability. My company (OEM) has a number of enquiries for equipment (baseplates, lifting beams)which must be suitable for this condition at site and we have struggled in the past to get readily available material (unless we pay for supplier to cast/roll 40 tonnes at a time!). Our solution has been to purchase steel rated down to -20degC and re-test / re-certify for -40degC.





RE: Structural Steel for Low Temperature Applications
RE: Structural Steel for Low Temperature Applications
RE: Structural Steel for Low Temperature Applications
What is your minimum value of Charpy V-notch impact energy at -40 deg C (15 ft-lbs or 20 ft-lbs or 10 ft-lbs)? Depending on your impact energy requirements, there are a number of nickel-bearing steels (2% Ni), and low alloy quenched and tempered steel (like T1) to choose from depending on your impact requirements.
I have attached the following web site that provides a general overview of material selection for low temperature service. Keep in mind that the stated lowest temperature service may not be suitable for your design requirements;
http://www.key-to-steel.com/articles/art61.htm