Alphagaz has assembled this materials' compatibility information to assist the user in the evaluation of materials of construction for a safe gas system.
Although the information has been compiled from what Alphagaz believes are authoritative sources, it must be used with extreme caution. No chart can cover all conditions of concentration, temperature, humidity, impurities and aeration.
It is recommended that this chart be used only to select possible materials for use and then more extensive investigation and testing be done under the specific conditions to be encountered.
Alphagaz believes the information presented to be accurate and factual, but it is not to be taken as a warranty or representation for which Alphagaz assumes legal responsibility.
Below is the legend for the material compatability table which can be accessed in a PDF available here
Material Compatibility Legend
In presence of moisture
> 65% copper
In absence of O2
In presence of oxygen
Up to 104 bars
Possible forming of spontaneously flammable compounds