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Qualitek Standard Alloy Compositions Lead Free Chemistries

Quality solder begins with quality powder and alloys. All Qualitek soldering alloys exceed J-STD-006 and SMTA B-32 Specifications

LEAD FREE ALLOY COMPOSITIONS
Alloy Composition
Melting Range
(°C)
Melting Range
(°F)
BAR
WIRE
PASTE
SPHERE
Ecolloy TM
221-227
430-440
Sn100e TM
228
442
Bi58
Sn42/Bi58
139 E
282
Sn96.5
Sn96.5/Ag3.5
221 E
430
Sn95
Sn95/Ag5
221-245
430-473
LF217
Sn95.5/Ag4.0/Cu0.5
217-219
422-426
SAC 387
Sn95.5/Ag3.8/Cu0.7
217-219
422-426
SAC 357
Sn95.8/Ag3.5/Cu0.7
217-221
422-426
SAC 405
Sn95.5/Ag4.0/Cu0.5
217-221
422-426
SAC 305
Sn96.5/Ag3.0/Cu0.5
217-221
422-426
SAC 105
Sn98.5/Ag1.0/Cu0.5
217-228
422-442
   
 
Sn99
Sn99.3/Cu0.7
227 E
440
Sb5
Sn95/Sb5
232-240
450-464
xxE-Eutectic
xx*
US Patent 5, 435, 857
Above alloys subject to availability at time of inquiry and may require a minimum PO.