Red gold solder 750R1

[Goldfish]

Hi there
I bought red gold solder years ago, 18ct but not sure if its easy. Medium or Hard? I usually stamp on it at the time but not this time.
All it has on it is 750R1!
Any ideas, thank you

[Dennis]

My table shows the melting range of solders.
If you use a small snip of your unknown, side by side with say a piece of medium silver solder of the same size and melt them quite slowly on a piece of scrap, it will give you a clue to the hardness. Dennis.

[Goldfish]

Thanks Dennis

[mizgeorge]

I don't know if it's any help, but I've only ever been able to find red 18ct in medium (in panels anyway - I don't think I've ever seen red in wire) - I have a little stash of most grades of solder, and it's the one gap that I've never been able to fill! Mine are simply marked 9 and 18 'red'