Nickel brazing filler metal with excellent wetting spreadability

Provided is a nickel brazing filler metal which is capable of brazing various stainless steel members at a relatively low temperature, has excellent corrosion resistance, and is used for brazing heat exchangers and the like. The present invention relates to a nickel-based alloy which has a melting temperature of 1000 DEG C or less, exhibits excellent wet spreadability, and has corrosion resistance to acids, and is characterized by comprising 8.0-19.0 mass% of Cr, 7.0-10.5 mass% of P, 0.1-1.5 mass% of B, 2.0-8.0 mass% of Cu, a Mo content of 10.0 mass% or less, and a Si content of 2.5 mass% or less, with the remainder comprising Ni and unavoidable impurities. In addition to containing one or more elements selected from the group consisting of Co, Fe, and Mn, the content of Co is 5.0 mass% or less, the content of Fe is 3.0 mass% or less, the content of Mn is 3.0 mass% or less, and the total content of these elements is 8.0 mass% or less. 提供一种能够以比较低的温度钎焊接合各种不锈钢构件，具备优异的耐腐蚀性，用于热交换器等的钎焊的镍钎料。熔融温度在1000℃以下，显示出优异的润湿铺展性，