Refrigeration, Air Conditioning, Heating Installation (HVAC)

For heat-exchangers, engine radiators, domestic refrigerators, commercial refrigerators, industrial refrigerators, air conditioners, wall boilers, gas boilers, electric home appliances, coils, condensers, evaporators, compressors for cooling, refrigerated cabinets, Heating plants, water, floor heating piping, etc..

Phosphorous copper alloys

Standard Alloy Chemical Composition(%) Melting Range
Solidus Liquidus
AWS A5.8 BCuP-2 Cu:Bal.  P:6.5-7.5 710℃ 790℃
AWS A5.8 BCuP-3 Cu:Bal.  P:5.7-6.1  Ag:5.0-5.2 643℃ 816℃
AWS A5.8 BCuP-5 Cu:Bal.  P:4.8-5.3  Ag:14.5-15.5 643℃ 800℃
AWS A5.8 BCuP-6 Cu:Bal. P:6.8-7.5  Ag:1.8-2.2 643℃ 790℃
BCu86PSn Cu:Bal. P:6.5-7.5 Sn:6.5-7.5 640℃ 680℃

Aluminum and aluminum alloy welding wire

Standard Alloy Chemical Composition(%)
AWS A5-10
EN ISO18273-S
ER4043
AlSi5
Al:Bal. Si:4.50-5.50 Fe:0.80 Cu:0.30 Mn:0.05 Mg:0.05 Zn:0.10 Ti:0.20 Other:0.15
AWS A5-10
EN ISO18273-S
ER4047
AlSi12
Al:Bal. Si:11.0-13.0 Fe:0.60 Cu:0.30 Mn:0.15 Mg:0.10 Zn:0.20 Ti:0.15 Other:0.15

Aluminum flux cored brazing wire

Type Composition Brazing temp ℃ Flux Proportion Wire Diameter Note
Alloy Flux (wt%) (mm)
BD812 Al88Si12(4047) K Cs Al F 595~625 low:10-15%
Standard type:15-25%
Φ1.2~Φ2.4 Aluminum to aluminum brazing

Aluminium to copper flux cored brazing wire

Type Composition Brazing temp ℃ Flux Proportion Wire Diameter Note
Alloy Flux (wt%) (mm)
BD802 1# ZnAl alloy  Cs Al F 4 420-480 10-20% Φ1.6~Φ2.4 Copper to Aluminum brazing
BD822 2# ZnAl alloy 420-480
BD815 3# ZnAl Alloy 420-480
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