GAS & METAL REACTION 

  Gas

Aluminum

copper

brass

steel

Stainless steel

Special Characteristic

Acetylene

R N R R R Do not use at pressures exceeding 15 psig

Air

R R R R R

Ammonia

R N N X R Causes stress cracking of cooper and cooper alloys

Argon

R R R R R

Butane

R R R R R

Butanes

R R R R R

Carbon Dioxide

R R R R R

Carbon Monoxide

R R R R R

Ethane

R R R

Ethylene

R R R R R

Ethylene oxide

N N R R Exposure of liquid on skin or clothing can cause dermatitis

Fluorine

R R X R Strong oxidant can ignite combustible materials and metals

Helium

R R R R R

Hydrogen

R R R R R

Hydrogen Bromide

N X N X X Steel or stainless steel serviceable in dry liquid or gas service

Hydrogen Chloride

N X X X Steel or stainless steel serviceable in dry liquid or gas service

Hydrogen Fluoride

X R R R R Exposure can attack skin, bones and fingernails

Hydrogen Selenide

N N N X R Extremely toxic, older deadens the olfactory nerves

Hydrogen Sulfide

N N N X R Odor deadens olfactory nerves, can cause paralysis                

Isobutane

R R R R R

Krypton

R R R R R

Methane

R R R R R

Methyl Acetyiene

R N X R R

Neon

R R R R R

Nitric oxide

R N N X R Readily reacts with oxygen to form Nitrogen Dioxide

Nitrogen

R R R R R

Nitrous oxide

R R R R R

Oxygen

R R R R R Strong oxidant, ignites combustible matter spontaneously

Propane

R R R R R

Propylene

R R R R R

Silane

R R R R R Pyrophoric

Sulfur Dioxide

R R R R R

Sulfur Hexafluoride

R R R R R

Xenon

R R R R R

R: RECOMMENDED


N: NON-RECOMMENDED


X: UNSATISFACTORY FOR USE WITH THE INTENDED