Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(6), 1597-1604 | DOI: 10.11118/actaun201361061597

Soldering sheets using soft solders

Milan Brožek
Department of Material Science and Manufacturing Technology, Faculty of Engineering, Czech University of Life Sciences Prague, Kamýcká 129, 165 21 Praha 6 - Suchdol, Czech Republic

The paper contains strength tests results of joints soldered using lead and leadless soft solders. For tests lead solders types Pb60Sn40 and Sn60Pb40 and leadless soft solders types Sn95.5Ag3.8Cu0.7 and Sn96Ag4 were used. As basic materials steel sheet, zinc-coated steel sheet, copper sheet and brass sheet 100 x 20 x 1 mm was the test samples size. Always two sheets were cleaned and jointed together. For heating the propane-butane + air flame was used. Then the tested assemblies were loaded using the universal tensile-strength testing machine till to failure. At the tests the force needed for assemblies failure and failure type (in soldered joint, in basic material) were recorded. From measured data the solder strength was calculated. From the experiment results it follows that from the point of view of the soldered joints strength as well of the solder strength relatively small differences were found. At the same time it is evident that the joint strength and solder strength depend on soldered material type and on soldered joint lapping length. On the basis of carried out experiments it can be stated that the substitution of lead solders by leadless solders is possible without risk of soldered joints strength decrease.

Keywords: soldered joints, leadless solders, laboratory tests, tensile lap-shear strength
Grants and funding:

Supported by the Internal Grant Agency of the Czech University of Life Sciences Prague, Czech Republic, Project No. 31140/1312/3107.

Received: September 18, 2013; Published: November 24, 2013  Show citation

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Brožek, M. (2013). Soldering sheets using soft solders. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis61(6), 1597-1604. doi: 10.11118/actaun201361061597
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