| Aufhauser Filler Metal Selection Chart | |||||||
|
Metals to be Joined |
Filler Metals | Melting Range |
Fluidity Rating* |
Fluxes |
Torches & Flames** |
||
| Solders |
Brazing |
Solidus | Liquidus | ||||
|
Copper or Brass to Copper or Brass |
Tin-Silver 96/4 | 430°F | 430°F | 10 | SolderFLux Liquid(F150) , SolderFlux Paste(F155) | Air-fuel | |
| Tin-Silver 95/5 | 430°F | 535°F | 8 | ||||
| Tin-Nickel | 460°F | 630°F | 6 | SolderFlux(F150) | Air-fuel | ||
| Aufhauser 0 | 1310°F | 1475°F | 5 | No flux required for copper-to-copper joints with the phosphorus-bearing filler metals. For brass and other alloys of copper, use Stay-Silv White Brazing Flux. |
Oxy-acetylene (neutral flame) |
||
| PhosCopper 5 | 1190°F | 1500°F | 3 | ||||
| PhosCopper 6D | 1190°F | 1465°F | 3 | ||||
| PhosCopper 6 | 1190°F | 1425°F | 5 | ||||
| PhosCopper 15 | 1190°F | 1480°F | 3 | ||||
|
Copper or Brass to Steel or Stainless |
Tin-Silver 96/4 | 430°F | 430°F | 10 | SolderFLux Liquid(F150), SolderFLux Paste(F155) | Air-fuel | |
| Tin-Silver 95/5 | 430°F | 535°F | 8 | ||||
| SilverAlloy A-56T | 1145°F | 1200°F | 8 |
Oxy-acetylene (slightly reducing flame) |
|||
| SilverAlloy A-40 | 1250°F | 1350°F | 5 | ||||
| SilverAlloy A-45 | 1225°F | 1370°F | 6.5 | ||||
| SilverAlloy A-45T | 1195°F | 1265°F | 7 | ||||
|
Steel or Stainless to Steel or Stainless |
Tin-Silver 96/4 | 430°F | 430°F | 10 | SolderFLux Liquid(F150), SolderFLux Paste(F155) | Air-fuel | |
| Tin-Silver 95/5 | 430°F | 535°F | 8 | ||||
| SilverAlloy A-56 | 1145°F | 1200°F | 8 |
Oxy-acetylene (slightly reducing flame) |
|||
| SilverAlloy A-40 | 1250°F | 1350°F | 5 | ||||
| SilverAlloy A-45 | 1225°F | 1370°F | 6.5 | ||||
| SilverAlloy A-45T | 1195°F | 1265°F | 7 | ||||
|
Steel or Stainless to Carbides |
Not recommended | Black SilverFlux(F130) |
Oxy-acetylene (reducing flame) |
||||
| SilverAlloy A-40Ni2 | 1220°F | 1435°F | 4.5 | ||||
|
Aluminum to Aluminum (1) Aluminum to Nickel (2) Aluminum to Steel (3) Aluminum to Stainless (3) Aluminum to Copper (4) Aluminum to Brass (4) |
AlumSolder 500 | 391°F | 482°F | Not rated | AlumFlux(F100) | Air-fuel | |
| AlumBraze | 1070°F | 1080°F | Not rated | AlumFlux(F100) | Air-fuel | ||
* The higher the fluidity rating, the faster the alloy flows within the melting range.
** For best results and
strong leakproof bonds, filler metals should be applied to the joint area only
after the parts are heated to the
proper brazing temperature. Oxy-acetylene torches
may be substituted for air-fuel, but will require care to prevent melting of
the base
metals with this higher temperature flame.
(1) Can be brazed directly.
(2) Can be brazed directly or precoated with aluminum.
(3) Plate steel surface with aluminum.
(4) Not usually recommended. Use steel transition piece between aluminum
and copper. Coat one steel end with aluminum. Braze
coated steel to aluminum with Al 4047. Braze
uncoated end to copper with Aufhauser Silver brazing alloy A-45T.