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Posted by Martin H. Eastburn on February 21, 2008, 8:39 pm
Please log in for more thread options Keep the propane for brazing.
Martin
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/
SteveB wrote:
>> Maxwell wrote:
>>>
>>>> SteveB wrote:
>>>>
>>>>> Went to propane for cutting without a thought for welding. Do they make
>>>>> propane welding tips? Been googling, but haven't found any yet.
>>>>>
>>>>> Steve
>>>> Propane, unlike acetylene, will inject lots of free hydrogen into the
>>>> weld
>>>> zone, leaving the weld brittle from the phenomenon called hydrogen
>>>> embrittlement. The only fuel gas suitable for welding is acetylene - that
>>>> is
>>>> the only reason it is still sold.
>>>>
>>>> Save money on cutting or heating with propane or other fuel gases, but if
>>>> you
>>>> want to weld, you need to stock acetylene.
>>>>
>>>
>>> Does the same go for natural gas? I have always considered converting,
>>> but had never heard this.
>> Yes, NG, propane, chemtane, MAPP, flameall, propylene and propadiene all
>> are unsuitable for torch welding. All inject too much hydrogen into the
>> weld, making it brittle. The only suitable gas for WELDING is acetylene.
>>
>> Saith Ernie in his gas welding class.
>>
>> Grant
>
> Well dang. I went to propane to save money, and now it looks like I'll be
> getting an acetylene cylinder anyway. Sheesh. See what happens when you
> ASS-U-ME? Good thing I saved the acetylene hoses when I replaced them with
> T type. I never throw anything out anyway.
>
> Steve
>
>
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