All 2st Welding on frame of 09 wr 300

Does anyone know the exact kind of steel on the main frame of the this bike?

I cracked the muffler mount on the frame and would like to get this repaired before it gets worse. I know someone posted the type of steel somewhere on here but I can find it.

I checked my owner's manual and it just says "steel". I am not a welder but I think to be helpful for my welder I need more specifics.

thanks

The subframe is aluminum and not a very weldable aluminum at that.

The Frame is prolly mild steel...maybe Cro-Moly.

A good welder will test rods and see what works best.

If its the subframe, it can be welded by a decent tig welder. Ive had both stock mounts replaced with aluminum stock. The main frame is most likely cromo.

thank you.
Yes I have already had the sub frame welded a couple times-those muffler tabs aren't very flexible .

I will let my guy know about the cromo.
Hopefully I won't have to do this again.

good idea to keep any old cromo push bike frames for such an occasion.