Sullivan4874
Mechanical
- May 24, 2021
- 10
ISO 11114-1:2020 Section 6.2 has the following statement:
"For gas mixtures containing gases causing embrittlement the risk of hydrogen embrittlement only occurs if the partial pressure of the gas is greater than 5 MPa (50 bar) and the stress level of the cylinder material is high enough."
This standard is for gas cylinders & valves while my application is process piping, fittings and valves (100% hydrogen, room temperature). Can I really ignore the risk of hydrogen embrittlement at pressures below 50 bar? Some of the materials in the valve are cold worked carbon steel and high strength alloy steel.
Thanks!
"For gas mixtures containing gases causing embrittlement the risk of hydrogen embrittlement only occurs if the partial pressure of the gas is greater than 5 MPa (50 bar) and the stress level of the cylinder material is high enough."
This standard is for gas cylinders & valves while my application is process piping, fittings and valves (100% hydrogen, room temperature). Can I really ignore the risk of hydrogen embrittlement at pressures below 50 bar? Some of the materials in the valve are cold worked carbon steel and high strength alloy steel.
Thanks!
