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
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.
Lead free solder, wetting, mechanical properties, thermal behavior