ICSR (Soldering and Reliability) Conference Proceedings


Comparing Mechanical and Soldering Properties of Castin™, Babbitt and Alternative Lead-Free Alloys

Authors: Mehran Maalekian, Yuan Xu, Amir Hossein Nobari, Karl Seelig
Company: AIM Metals & Alloys and McGill University
Date Published: 5/19/2015   Conference: ICSR (Soldering and Reliability)


Abstract: This paper compares three commercial lead-free solders; CASTIN™®, Babbitt and SAC-I and their modified compositions in terms of mechanical and soldering properties. Solders tested are six alloys with different compositions in the range of (major elements): Sn/Cu(0.7- 4)/Ag(0-4)/Sb(0.5-8)/Bi(0-3)/Ni(0-0.15). Effects of alloying elements on the thermal behavior (melting and solidification), wetting force, contact angle, spreading, tensile and hardness properties are studied. Based on preliminary results an alloy modification is made and its properties are compared and discussed against the commercial creep resistant solder alloy, i.e. SAC-I.

Key Words: 

Lead free solder, wetting, mechanical properties, thermal behavior



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