4047(铝焊条):主要元素合金有:硅。不可以热处理,熔化温度为:577℃~582℃,抗腐蚀能力:B(Gen)A(Scc),导电率:41%IACS(-O),密度:2.66克/㎝3,阳极化处理后为灰黑色。4047铝焊条是主要被用于铝合金材料的钎焊。 Soldering or brazing aluminum to copper or brass is not recommend because; a)Brazed joints may be brittle b)this combination of base metals creates a hight potential for galvanic corrosion The selection chart on page 33 recommends plating to facilitate joining aluminum to other metals. ALCOR FLUX-CORED ALUMINUM ALLOY Alcor brazing alloy is very simple to use with very good fludity and good capillary -braze cleaning is Alcor surpasses tin-zinc and aluminum-slilicon alloys for aluminum coil repair since it melts at 824F/ non-corrosive flux inside the external flux is 2mm diameter coil comes in a convenient plastic case. Use Alcor on heat exchangers,air conditioners,aluminum alloy cooling applications and aluminum to aluminum alloy piping connections. Alcor is easy to use: 1 Clean the surfcae of the aluminum to be joined,preferably with a stainless steel brush. 2 Heat the surfcae evenly. 3 Apply Alcor