| | Copper-Zinc Brazing Alloys are suitable for gas-flame brazing, high temperature brazing, salt bath dip brazing of copper and copper alloys , nickel, cast iron and hard alloys. While brazing by oxyacetylence, to heat with oxidized flame quickly can lessen evaporation of Zinc and prevent gas porosity due to over-oxidization.The optimun joint gap should be 0.025-0.1mm. Flux is also necessary for good seam. | | | Melting range | Application | AWSStandard | Chemical Analysis | °C | °C | Cu | Zu | Su | Fe | Ni | Si | Other | Solidus°C | Liquidus°C | hs221 | 60 | Bal. | 1 | — | — | 0.3 | — | 890 | 905 | Melting point is about 900°C. Braze welding ofcopper, steel and cast iron. | RBCuZn-A | 59 | Bal. | 0.6 | — | — | — | — | 875 | 885 | Melting point is about 900°C. Braze welding ofcopper, steel and cast iron. | RBCuZn-C | 58 | Bal. | 0.9 | 0.8 | — | 0.1 | — | 865 | 890 | Melting point is about 880°C. Gas welding andcarbon arc welding of brass, also braze weldingof copper, steel and cast iron | RBCuZn-D | 48 | Bal. | | | 10 | 0.2 | — | 890 | 935 | Melting point is about 935°C and high strength.Braze welding of steel, nickel and carbide alloys | RBCuSn-A | Bal. | — | 5 | — | — | — | P:0.2 | 910 | 1040 | RBCuSn-C | Bal. | — | 8 | — | — | — | P:0.2 | 882 | 1027 | Wear resistance. Argon arc welding of copperalloys and surfacing of steel. | RBCuAI-A1 | Bal. | — | — | — | — | — | AI:7.5 | 1030 | 1040 | RBCuAI-A2 | Bal. | — | — | — | — | — | AI:9 | 1045 | 1055 | Wear and corrosion resistance. Argon arc weldingof copper alloys and surfacing of steel. | RBCuSi-A | Bal. | — | — | — | — | 3 | Mn:1 | 1018 | 1040 | Good mechanical properties. Argon arc welding ofcopper alloys and MIG brazing of steel |
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