SOFT SOLDERS

SOFT SOLDERS:  


Composition - Pb75Sn25       

Melting Point oC - 183/266

Applications:

Crude solder for construction plumbing works, flame-melted. Used for soldering car engine radiators. Used for machine, dip and hand soldering of plumbing fixtures and fittings. Superior body solder.


Composition - Pb70Sn30       

Melting Point oC - 185/255

Applications:

Crude solder for construction plumbing works, flame-melted, good for machine and torch soldering. Used for soldering car engine radiators. Used for machine, dip and hand soldering of plumbing fixtures and fittings. Superior body solder.


Composition - Pb60Sn40       

Melting Point oC - 183/238 - 183/247

Applications:

For soldering of brass and car radiators. For bulk soldering, and where wider melting point range is desired. For joining cables. For wiping and joining lead pipes. For repairs of radiators and electrical systems.  


Composition - Sn50Pb50       

Melting Point oC - 183/216

Applications:

"Ordinary solder", for soldering of brass, electricity meters, gas meters, formerly also tin cans. General purpose, for standard tinning and sheetmetal work. Becomes brittle below −150 oC. Low cost and good bonding properties.  


Composition - Sn60Pb40    

Melting Point oC - 183/190

Applications:

Common in electronics, most popular leaded alloy for dipping. Low cost and good bonding properties. Used in both SMT and through-hole electronics. Rapidly dissolves gold and silver, not recommended for those. Slightly cheaper than Sn63Pb37, often used instead for cost reasons as the melting point difference is insignificant in practice.  


Composition - Pb95Sn5   

Melting Point oC - 308/312 - 301/314

Applications:

Low cost and good bonding properties. Used for coating steel and copper. Used in both SMT (Surface-mount technology) and through-hole electronics. Rapidly dissolves gold and silver, not recommended for those. Useful for high-temperature service and step soldering. Remains ductile at very low temperatures, can be used for parts subject to vibration at cryogenic applications.  


Composition - Pb90Sn10

Melting Point oC - 268/302

Applications:

Low cost and good bonding properties. Rapidly dissolves gold and silver, not recommended for those. Used for fabrication of car radiators and fuel tanks, for coating and bonding of metals for moderate service temperatures. Body solder Has low thermal EMF, can be used as an alternative to Cd70 where parasitic thermocouple voltage has to be avoided.

 

 

Central Metals & Alloys Ltd

Tel: 44 (0) 1455 291 780
Fax: 44 (0) 1455 292 380
@: sales@centralmetals.co.uk

© Copyright 2011 Central Metals & Alloys Ltd. All rights reserved