The ability of a material to be soldered, or joined together using solder.
Good solderabilities mean it's easy to join the material using solder.
Examples:
The solderabilities of this metal are very high.
The solderabilities of plastic are very low.
Good solderabilities make the job easier.
The bad solderabilities of this material are giving me a headache.
The solderabilities of this new alloy are off the charts!
I wish all materials had great solderabilities.