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Lucas-Milhaupt offers the most comprehensive inventory of alloys and forms in the industry and our expertise in brazing and soldering ensures that we can find the best-matched products for your needs.

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Soldering Alloys

Soft solders are filler metals that melt and flow below 800° F. They are typically available in solid wire or cored with a rosin or acid flux. Soldering alloys are available in tin, lead, silver, copper, antimony and other compositions and can be fabricated into wire, strip, paste, powder or preformed shapes.

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Product SolidusLiquidusNominal Composition, % Technical Documents* MSDS Safety Documents*
°F °C °F °C Ag Pb Sn Zn Other
40 Sn/60 Pb
Good for preforms. Use acid flux.		 361 183 460 238   60 40    
50 Sn/50 Pb
Good general purpose alloy. Use either rosin or acid flux.		 361 183 421 216   50 50    
60 Sn/40 Pb
Electronic solder.		 361 183 374 190   40 60    
63 Sn/37 Pb
Eutectic-highest strength of Tin/Lead alloy series.		 361 183 361 183   37 63    
78.4 Cd/16.6 Zn/5 Ag (Br 056)
High temperature solder - good strength.		 480 249 600 316 5     16.6 78.4 Cd
 
80 Au/20 Sn
Low ductility alloy. Low vapor pressure alloy.		 536 280 536 280     20   80 Au
 
95 Cd/5 Ag (BR 053 TEC)
High temperature solder - good strength.		 640 338 740 393 5       95 Cd
 
95 Sn/5 Sb
For Cu to Cu. Good creep strength. Not for brass.		 452 233 464 240     95   5 Sb
 
96.4 Sn/3.6 Ag Clean 'N Brite
Eutetic alloy. Wets Cu, Brass, Steel, SS.		 430 221 430 221 3.6   96.4    
97.5 Pb/2.5 Ag
Eutectic alloy - a homogenous alloy.		 579 304 579 304 2.5 97.5