Welding a carrier floor

[eddy8men]

i replaced quite a few patches on my T16 floor using normal mild steel plate and .8mm mig wire. i welded it normally in one run and had no problems.
the only time i got cracking of welds was doing short 1" welds on the 1/2" wading plates. it goes against what everyone else has said but i put it down to not enough heat transfer from the weld to the armour plate. i did a few large plate patches on the side armour with the mig turned up all the way and had no issues as i believe the original armour got hot and took longer to cool down helping to even things out.

[Stew Robertson]

The floor plate is 10 gauge and can be welded with mig leave a small gap and go at it
Spot it into place and stitch weld it 10 inches apart down the length way easy peasy

[Lynn Eades]

Hi Guys. I am welding patches full length of the floor. The rear patch is cut from a piece of old floor (only about 60mm wide) that goes from the cam plate hole to the back. The rest is mild steel.
I found that the mig welds just cracked with a little bit of pressure from a cresent spanner, so i looked through my rod selection and found some "Hi-ten 7 rods. (Phillips rods)
Description in photo. I have tacked it and stitched it and welded both sides and sice the photo have welded the mild steel strip on one side. It seems to be going ok.
BTW, this floor (Canadian MkI U.C.)is approximately 3.9mm thick. this equates to about 0.153 inches which on the gauge scale is between 22g. and 23g.
10 gauge is 4.91mm- way heavier. Maybe later carriers had thicker floors? We've only ever had early ones here. Highest numbers in the 53xxx range.
First time my pictures haven't posted like I wanted them to.

[Sam Tremblay]

i will weld that any time with the mig the steel of mine look so soft so ready too weld wir=th any kind of welder