How many 18 inch silver brazing rods (bare) are there in one lb?
How many feet per lb? 

It depends upon the diameter and the silver content.

% Silver 35% 45% 56%
18 inch length
Diameter rods / lb rods / lb rods / lb
1/32 inch 231.6 220.0 212.9
3/64 inch 100.4 98.0 95.0
1/16 inch 57.9 55.0 53.2
3/32 inch 25.7 24.4 23.7
1/8 inch 14.5 13.7 13.3

 

% Silver 35% 45% 56%
18 inch length
Diameter ft / lb ft / lb ft / lb
1/32 inch 347.4 330.0 319.3
3/64 inch 150.6 141.86 141.86
1/16 inch 86.8 82.5 79.8
3/32 inch 38.5 36.6 35.5
1/8 inch 21.7 20.5 19.9

Phos Copper 2%:     1/8 x .050 x 20" ... 30.30 rods per lb

Phos Copper 15%:    1/8 x .050 x 20" ... 28.57 rods per lb

How many FT per lb of FC Silver Brazing Rods?

It depends upon the diameter and the silver content.

% Silver 35% 45% 56%
18 inch length
Diameter rods / lb rods / lb rods / lb
1/16 inch 33 32 31
3/32 inch     17
ft /lb ft/lb ft/lb
1/16 inch 49.50 48 46.50