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SOLDER REFERENCE GUIDE
Most solders are composed of tin and lead. When describing
a solder we always start with the percentage of tin followed by the percentage
of lead. For example, 60/40 would be 60% tin and 40% lead. Wire solder comes
with one of 3 cores. The core is the material in the center of the wire. The 3
options are acid core, rosin core, and solid wire.
ACID CORE SOLDER – (RED LABEL)
 | Most aggressive core available |
| Typically used for repairs where the materials being
soldered are not new or clean. |
| Never used on electronic applications |
| Larger diameters (1.5 & 3.00 mm) are most common |
ROSIN CORE SOLDER – (BLUE
LABEL)
| Medium to mild core strength |
| Typically used on electronic or electrical applications. |
| Can be used as a general solder as this core also acts
as a flux. |
| Electrical applications like smaller diameters ( 0.75,
1.2, & 1.5 mm). General applications normally use 3.0 mm. |
SOLDER CORE – (BLACK LABEL)
| Also called solid wire solder. |
| Normally used on new or very clean material. |
| Should be used with an external flux ( paste, liquid, or
powder) |
AQUASOL
| Must be used for plumbing and potable water
applications. Contains no lead. |
SILVER SOLDER
| Used for joining dissimilar metals or for applications
where a stronger bond is need. |
| Comes in 5% to 65% alloys with the most common being 5,
15 and 45%.. |
| Comes in stick or coil format depending on the alloy. |
ALUMIUM SOLDER
| Just like silver solder but for use on aluminum. |
| No flux required just heat and solder. |
BAR SOLDER
| Used mainly in roofing and tin bashing. |
| For applications where a large amount of solder is
needed. |
| Should use an external flux (paste, liquid, or powder). |
| Typically comes in 30/70, 40/60, 50/50, and 60/40
alloys. |
| Normally comes in approximately 1 lb bars. |
FLUX
| Cleans and prepares the area for soldering. |
| Evenly distributes heat and causes solder to flow more
evenly. |
| Comes in paste, liquid, or powder format. Powder needs
to mixed with water prior to use. |
| Solder union should always be washed off when soldering
is complete. |
TINNING COMPOUNDS
| A mixture of powder flux and powdered solders. |
| Cleans surface and applies a fine layer of solder.
Works like a solder primer. |
| Comes in tin/lead and lead free applications. |
BABBITT
| Babbitt is a term used describe an alloy composed of
non-ferrous metals. There are many different alloys available. Babbitt is a
collective term for these alloys. |
| Also called white metal. |
| Normally composed of lead, tin, antimony, copper,
arsenic, and nickel. |
| Over 1000 types of Babbitt are available. |
| Most common are #2, #3, #4, & #7. Some other common
names for these are choker, super tough, harris heavy pressure, and 4 times
nickel genuine. |
| Used mainly on bearings, sling cables, and other
industrial applications. |
PURE LEAD WIRE
| Normally used for checking clearances or adding small
amounts of weight. |
| Comes in 0.020” through 0.400” diameter. |
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