Soft Soldering of Steel DIN CK50 Using ASTM 50A and ASTM 63A

Volume 13 , Issue 1 , January 2010 , Pages 81-86

Authors

¹ Technical college of Sulaimani , Department of Production Engineering and Metallurgy

The research presents some experimental data concerning the relation between the shearing strength

of soldered joints and holding time. Two types of solders ASTM 50A (Sn50Pb50) and ASTM 63A

(Sn63Pb37) were used to joint medium carbon steel type DIN CK50 of 3 mm thickness. Lap joint design

was employed. Muffle furnace used for heating with holding (reflow or dwell) times of 10, 20, 30, 35, 40,

45 and 50min. Maximum shear strength was obtained when the eutectic solder (ASTM 63A) used with 35

min. as holding time. Clear intermetallic compounds were shown at the interface, whereas the X-ray

detected the formation of many phases like FeSn and FeSn2.

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