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ASME UCS-66 / UHA-23 / B31.3 Ch IX

Cryogenic-service screening

Charpy energy at MDMT, code-eligibility floor, PWHT exemption. LNG (-162 °C), liquid hydrogen (-253 °C), liquid nitrogen, air-separation.

Inputs

°C
LNG = −162, LH₂ = −253, LN₂ = −196, ethylene = −104.

Results

Charpy energy at MDMT
floor 27 JMDMT -162 °C-253-196-162-104-500Charpy JT (°C)
Run the screen to see the predicted Charpy at MDMT vs the code-required floor.
Pick alloy + MDMT, click Screen.