Hard soldering material for the use with the very low-temperature braze welding and procedure for th

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A brazing material that has a low melting point and can braze aluminum materials at a low temperature with a good wetting property is disclosed. The brazing material can include a matrix composed of Zn, a Zn-Al alloy or a Al-Zn-Si alloy having a low melting point each preferably containing 0.001 to 3.0 wt% of rare-earth element. When such a brazing material is used, aluminum materials can be brazed at a temperature of 580 DEG C or below.