In a weak moment and at a very good price i acquired 22kg of Tenacito 65R 9018 type rods. They are low alloyed rods usually for high strength steel types. But I hope/guess they are suitable for mild steel also?
It looks like a 7018 type rod made to tighter specifications (or at least sold as having tighter specifications) than the usual 7018. Looking at the data sheets and the >= signs you could sell Tenacito 65R as Tenacito R and be well within your claims. It could just be that they are so good at making rods that all lo-hys they make could be classed as 12018s and the rest is marketing. You'd assume that 9018 was harder to make and therefore dearer than 7018.
I've just sported £16 on a box of Tenacito R which I hope will be better than the Nexus stuff I've been using.
I've seen Metrode make 6018s. Why? And why no 9016s?
No doubt TechnicAl will be along to shed light on all this presently.
Looking at the analysis of the weld metal. we see a content of molybdenum and vanadium in 65r compared to 38R. thus probably the flux could be the same but the rod composition is different to give the higher tensile strength.
I was looking at plain Tenacito R which seems to be the budget member of their low hydrogen range. They don't mention the typical Vanadium, Nickel content etc. That doesn't mean it's zero.
One again, I think they are selling you a guaranteed specification. If they chose in the factory to put Tenacito 65R into Tenacito R boxes, they'd easily meet the Tenacito R specification.
I doubt you'll have any problem welding mild steel with them.
In a critical application it would be wrong to use them. If its garden gates theres no problem except they arent that easy to use. You need to hold a consistent arc length and they tend to produce "peaky" welds so its best to weave.
arrrgh I see. I have run a few welds with them and it seems that I am good friends with them. I should have opted for a box of 38R instead - they are more normal 7018 I guess.
I am not at all an experienced welder. Should do an introduction in the relevant section at some point.