Also known as low-fuming bronze, this alloy provides versatility without the higher cost of silver brazing alloys. Works best for induction or torch brazing. Excellent results on ferrous and non-ferrous base metals.
#681 is a versatile copper brazing alloy suited for the joining of steel, copper, copper alloys, nickel, nickel based alloys, and stainless steel where corrosion resistance is not a major requirement. This copper brazing alloy has gained popularity as an economical alternative to silver brazing alloys.
Most commonly brazed via torch or induction, it is best to keep the heat cycle to a minimum to prevent vaporizing the zinc. Flux is required when brazing with #681.
|Material||Low Fuming Bronze|
|Melting Pt.||1590 ºF
|Flow Pt.||1630 ºF
|Preform Options||Brazing Discs
|Resale Options||Brazing Paste
Brazing Rod (Flux Coating Available)
Spooled Brazing Material
|Approx. Wire Length (BCuP/lb.) (BAg/Tr.oz)||1097 in; 0.062 diameter
4386 in; 0.031 diameter
487 in; 0.093 diameter
|Recommended Braze Temperature||1750 ºF|
Suitable for ferrous and non-ferrous applications. Often an economical alternative to silver brazing alloys.
Bellman-Melcor distinguishes itself as a provider of premium quality brazing alloys at industry competitive prices. Our extensive inventory of brazing and soldering alloys ensures that in most cases your order can be available for immediate delivery.
- AWS: RBCuZn-C
- UNS: C68100
- Brazing Temperature Range High: 1730 F / 943 C
- Brazing Temperature Range Low: 1680 F / 916 C
- Liquidus: 1630 F / 888 C
- Solidus: 1590 F / 866 C
- Cu: 58%
- Zn: 39.95%
- Sn: 0.95%
- Fe: 0.75%
- Mn: 0.255%
- Si: 0.095%
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