Description: AFM Phosphorous Bronze A contains about 5 percent tin and up to 0.35 percent phosphorous added as a deoxidizer. Tin increases wear resistance of the weld metal and slows the rate of solidification by broadening the temperature differential between the liquidus and solidus. This slower solidification increases the tendency to hot shortness. To minimize this effect, the weld pool should be kept small and welding time as short as possible. AFM Phosphorous Bronze A can be used to weld bronze and brass. It also can be used to weld copper if the presence of tin in the weld is not objectionable.
Chemical Composition Requirements (%):
| ( AL ) |
Aluminum |
0.01 |
| ( Cu ) |
Copper |
BAL * |
| ( P ) |
Phosphorus |
0.10 to 0.35 |
| ( Pb ) |
Lead |
0.02 |
| ( Sn ) |
Tin |
4.0 to 6.0 |
| All Other |
0.50 |
*including Silver (Ag)
All values are considered maximum, unless other-wise noted.
Hardness and Tensile Strength:
- Minimum Tensile Strength, psi 35,000
- MPa 240
- Brinell Hardness 70 to 85 (average values for an as-welded deposit)
Standard Sizes: .035 (0.9), .045 (1.2), 1/16 (1.6), 3/32 (2.4), 1/8 (3.2), 5/32 (4.0)
