Solder (tin - lead 50/50)

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Welding Materials Handbook

Solder (tin - lead 60/40 rosin core)

TYPE: SOLDER (tin - lead 40/60) ASTM 40A

TYPE: SOLDER (tin - lead 50/50) ASTM 50A

NSN: 9GD 3439-00-188-6986 (3/8X 5 lb. spool)

9GD 3439-00-273-1637 (1/8X 5 lb. spool)

USES:

This acid core, general purpose solder can be used

USES:

extensively on sheetmetal work. It is cheaper than

A general purpose solder recommended when a

50/50 solder and can be used in similar applications.

combination of a relatively narrow pasty range, good

No flux is needed on small work because of its acid

wetting properties, strength, and economy are desired.

core. (NOTE: SEAL END OF WIRE AFTER

Can be used as a wiping and sweating solder and on

radiator cores, electrical connections, heating units and

USING.)

roofing seams.

PROCEDURES:

Clean and roughen surface as this solder makes a

PROCEDURES:

stronger joint on a rough surface than on a polished

Clean and roughen surface as this solder makes a

one. Joint clearances can be from 0.003 in. to a

stronger joint on rough surfaces than on polished ones.

maximum of 0.010 in. An improper fit requires more

Joint clearances can be from 0.003 in, to a maximum

solder and leaves the joint weaker. If more flux is

of 0.010 in. An improper fit requires more solder and

needed, use NSN 9GD 3439-00-255-4566. Remove

leaves the joint weaker. The flux to use is NSN 9GD

flux residue after soldering.

3439-00-255-4566. Remove flux residue after

Melting Temperature: 361F

Flow Temperature: 455F

Flow Temperature: 421 `F

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