Question

Which of the following is an application of Tin solder 35?

(a) Tinning and filling of seams

(b) Plumbing

(c) Secondary soldering

(d) For materials which are difficult to solder

I got this question by my college professor while I was bunking the class.

This question is from Miscellaneous Properties topic in section Properties of Engineering Materials of Engineering Material & Metallurgy

Answer 1

Correct choice is (b) Plumbing

To elaborate: Tin solder 35, which contains 35% of Sn and 65% of Pb, is used for plumbing work. Tin solder 20 is used for tinning and filling of seams, while Cd-Sn is used for secondary soldering with the composition of 50% Sn and 17% Cd. For difficultly soldered materials, Zn-Cd is used in 17 to 83 ratios.