Nov 18, 2017 #1 A S Jhala Electrical Joined Jul 29, 2017 Messages 1 Location IN Dear Sirs, It is requested to suggest structural steel grades suitable for exposure to ambient temperature of -40 'C. What should be the minimum recommended value when tested for charpy V notch impact test at this temperature ? Regards,
Dear Sirs, It is requested to suggest structural steel grades suitable for exposure to ambient temperature of -40 'C. What should be the minimum recommended value when tested for charpy V notch impact test at this temperature ? Regards,
Nov 18, 2017 #2 dik Structural Joined Apr 13, 2001 Messages 26,115 Location CA In Canada we have a steel spec: CSA G40.21 T which is a low temperature weldable steel. See attached: Charpy tests are good and have low temperature notch toughness. Dik http://files.engineering.com/getfile.aspx?folder=13f55b97-4965-43b0-a825-88972d68a616&file=structurals.pdf Upvote 0 Downvote
In Canada we have a steel spec: CSA G40.21 T which is a low temperature weldable steel. See attached: Charpy tests are good and have low temperature notch toughness. Dik
Nov 18, 2017 #3 metengr Materials Joined Oct 2, 2003 Messages 15,478 Location US Normally, the minimum is 15 ft-lbs or 20 Joules unless specified by a construction code or standard. Upvote 0 Downvote