Oxy-propane uses oxygen at a 4:1 ratio to the propane (standard neutral flame).
Oxy-acetylene is darn close to a 1:1 ratio (technically, a 1.1:1 ratio for a neutral flame).
Oxy-fuel cutting of steel is only using the fuel for the preheat flame. Once the steel is up to 'kindling' temperature, the oxygen cutting jet is all that is needed (as long as you keep the travel speed consistent and 'correct'
).
Oxy-propane produces almost 2x the btu for the same flow rate as oxy-acetylene (2498 btu/ft3 for propane and 1470 btu/ft3 for acetylene). But the oxy-acetylene flame has a more 'concentrated' flame (more heat in the inner flame cone compared to oxy-other-stuff) and a slightly hotter flame temperature than oxy-propane.
Cutting speed difference between oxy-acetylene and oxy-propane would usually be barely measured in seconds (remember, the actual cutting is being done from the pure oxygen cutting jet and the fuel is only being used for the preheat flames).
Oxy-acetylene is darn close to a 1:1 ratio (technically, a 1.1:1 ratio for a neutral flame).
Oxy-fuel cutting of steel is only using the fuel for the preheat flame. Once the steel is up to 'kindling' temperature, the oxygen cutting jet is all that is needed (as long as you keep the travel speed consistent and 'correct'
).Oxy-propane produces almost 2x the btu for the same flow rate as oxy-acetylene (2498 btu/ft3 for propane and 1470 btu/ft3 for acetylene). But the oxy-acetylene flame has a more 'concentrated' flame (more heat in the inner flame cone compared to oxy-other-stuff) and a slightly hotter flame temperature than oxy-propane.
Cutting speed difference between oxy-acetylene and oxy-propane would usually be barely measured in seconds (remember, the actual cutting is being done from the pure oxygen cutting jet and the fuel is only being used for the preheat flames).