Tig rods for magnesium cases etc for old motorcycles

[harveyglen]

Hiya guys.

I need to repair some old bike crank cases that are magnesium, what rods would you guys recommend?

 

[hotrodder]

http://www.mig-welding.co.uk/forum/threads/magnesium-filler-wire.69164/#post-916612

If you're not 100% sure that the cases are mag then a drop of vinegar will confirm... the acetic acid in it reacts vigorously with mag (fizzing/bubbling away as the reaction produces hydrogen) but it won't react noticably with aluminium and its alloys including AlMg stuff. Important to be sure 'cause trying to weld magnesium with aluminium filler wire and visa versa results in a brittle mess. Search the TIG forum for magnesium and you'll find a few more threads on the subject

 

[Brad93]

There are lots of different magnesium alloys but the only place you can really get the Rods is in the SIF 12 rod packs.
I tried to get 2 kg a few months back of better quality aerospace stuff and it was turning into a right pain as not many places in the U.K. Hold a constant stock.

 

[harveyglen]

Thanks guys, appreciate you'd feed back,