7024 & 7028

[Liquid Metal]

Right, Not done much variety of stick welding except Lo Hi heavy beam bashing and thick plate work with 7016 and 7018. Also burned plenty of 7024s over the last few years. Plenty of Mig and loads of tig, from 22swg stainless sheet, carbon steel, ally and all sorts really.

But
Just a bit of curiosity really,.............

Been asked to make someone a couple of collapsible 150 mm sqr bollards to go in front of their unit doors.
Having a scout around in the stores at work (as you do) More types and sizes of rod than could ever be remembered!!
Came accross some 7028s that look like theyve been in there for a while.
Am I right in thinking that with the last digit an 8, they are a lo hy version of an iron powder 7024??
If so will probably go with these as should give a nice looking weld, with a good amount of strength??

 

[TechnicAl]

Your right but unlike 7024s there are more variants. Some have very heavy coatings and can only be used in the flat position and I mean flat.

 

[Liquid Metal]

Yes these have a very thick coating, dia of the rod is 5mm, but with the flux too, must be at least 12mm!!
No problem tilting the posts so all the welds are flat, but will probably pick out some other rods to weld the caps on the posts, but I thought of using these to weld the pivotting brackets that will bolt down onto the floor (made out of thick-ish plate) and can tilt these too so the welds are flat rather than a hori-vert fillet.
Thank you