PROUCT LIST
牌号
Product Number
相当于国外标准牌号
Related Standard
主要化学成分
Chemical composition
融化温度℃
Melting Range
RECOMMEND ED
DEOXIDANTS
用途
Applications
Ag Cu Zn Other 固相
Solidus
液相
Liquidus
 GBT-5A-flux Ag208 5 55 40 --- 830 870 D31 Alloys for dpuble
welding,very tough
and resistant,
excellent for brass
strips.
 GBT-20A-flux Ag206 20 45 35 --- 690 795 D60
 GBT-30A-flux Ag204 30 38 32 --- 680 765 D4

D26

D39

D60

D31
Alloys cadmium free
with medium/high
silver content, small 
melting range,
excellent capillarity
and fluidity
Used for brazing 
thin joints such as 
diaphragms,
thermostat,ect.
Indicated for food
contiguous point.
 GBT-44A-flux Ag203 44 30 26 --- 680 765
 GBT-25ASn-flux Ag108 25 40 33 Sn:2 680 740
 GBT-30ASn-flux Ag107 30 36 32 Sn:2 650 750
 GBT-34ASn-flux Ag106 34 36 27 Sn:3 630 730
 GBT-40ASn-flux Ag105 40 30 28 Sn:2 640 700
 GBT-45ASn-flux Ag104 45 27 25 Sn:3 640 680
 GBT-55ASn-flux Ag103 55 21 22 Sn:2 630 660
 GBT-56ASn-flux Ag102 56 22 17 Sn:5 620 650
 GBT-49AMn-flux Ag502 49 16 23 7.5Mn-4.5Ni 625 705
 GBT-60A-flux Ag202 60 26 14 --- 695 730
 GBT-67A-flux   67 22 11 --- 700 730
 GBT-72A-flux   72 28 --- --- 780 780
 GBT-74A-flux   74 18 8 --- 740 780