[Elecraft] Type of solder for constructing a K1

[6JB]

I am shortly about to start construction of an Elecraft K1.

I note the warnings given in the assembly manual about using the wrong 
type of solder. Thing is, I am an old timer and it is quite a long time 
since I built anything like this. In the past I have used multicore 
solder with a 60% tin and 40% lead mixture.

I gather that these days, due to the effects of lead, it is/has now 
being phased out from solder. I just bought a brand now roll of 'lead 
free' solder. The stated composition of this solder is Ag 4%, Sn95.5% 
and Cu 0.5%. I have tried making a few joints and other than it seeming 
to have a slightly higher melting point than the older types, it seems fine.

Will this new solder composition be OK for constructing the K1.

Sorry if this is a dumb question but I have been out of the building 
business for quite a few years.

Regards,

JB.