Can I use propane or LPG gas for welding?

[shasti]

Can I use propane or LPG gas for welding?

[Munkul]

No, sorry. You need acetylene.

https://www.wilhelmsen.com/marine-pr...ne-vs-propane/

[MinnesotaDave]

Short answer and long answer are both no...

I like it for heating and cutting though.

[SweetMK]

Can I use propane or LPG gas for welding?

Depending on what you are doing,, possibly brazing or silver soldering would work?
With brazing, you could use propane,, especially if you buy a "TurboTorch".

I have several sizes of TurboTorch tips, even the biggest T-6 tip, that torch is amazing.
I believe I could braze 3/4 inch solid steel bar to 1/4X2 inch steel bar.

Car body repairs should be easy,, and no acetylene is needed.

If your parts are smaller, a smaller (lower cost) tip is adequate.

[walker]

You absolutely can, just not in the manor these guys are thinking of.

You just need one of these little honeys and you can weld with propane all day long!

[smithdoor]

I agree with MinnesotaDave.
It possible to but will not give good job.
I did try propane and oxygen one time when about 14 it was not good.

Dave

Can I use propane or LPG gas for welding?

[Welder Dave]

Need a neutral flame for gas welding which is only possible with acetylene. What do think all extra oxygen from burning propane is going to do?

[shasti]

Thank you for your advice.

[SweetMK]

Need a neutral flame for gas welding which is only possible with acetylene. What do think all extra oxygen from burning propane is going to do?

I thought a neutral flame was possible with any fuel, even charcoal,,
IMHO, neutral indicates neither excess oxygen, or inadequate oxygen.

If the flame is neutral, the flame is at its highest BTU output, and probably the highest measurable temperature.

[Welder Dave]

No. Actetylene is hottest with an oxidizing flame, 6300*F neutral is around 5850*F carburizing around 5700*F depending on how much O2 is added. Sometimes you see terms like 2X feather or 3X feather. That refers to the outer feather of the flame and is adjusted by the amount of O2. Only oxy/acet. can produce a neutral flame with enough heat to melt steel. Oxy/propane (or other fuel) can have a flame hot enough to melt steel but it is an oxidizing flame so won't produce a sound weld. For brazing where you don't melt the steel propane and other fuel gases can be used.