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Lucas-Milhaupt BRAZE 250 Silver Based Cadmium Free Filler Metal

Category Metal , Nonferrous Metal , Copper Alloy , Precious Metal , Silver Alloy , Solder/Braze Alloy
Manufacturer Lucas-Milhaupt
Trade Name BRAZE
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Lucas-Milhaupt BRAZE 250 Silver Based Cadmium Free Filler Metal.pdf
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Material Notes:
Characteristics:Braze 250 is an intermediate temperature silver brazing alloy with a long (325EF/180EC) melting range. It has a tendency to liquate (i.e. separate into low and high melting constituents) if heated slowly through its melting range. Therefore, it is preferable to use this alloy where the assembly can be heated rapidly to brazing temperature. The long melting range of this alloy is useful when wide gap joints are brazed since it assists in producing larger fillets than more fluid alloys. Where the higher brazing temperature and characteristics of this alloy are permissible, the lower silver content affords a saving. Applications:Braze 250 is a useful intermediate temperature brazing alloy for joining a variety of ferrous and non-ferrous alloys capable of being heated to 1600EF/870EC without damage. It has found special use as a bearing surface material on rubbing seals in jet engine compressors. Information provided by Lucas-Milhaupt, Inc.
Physical Properties Metric English Comments
Density 8.95 g/cc
0.323 lb/in³
Mechanical Properties Metric English Comments
Tensile Strength at Break 172 - 207 MPa
25000 - 30000 psi
Copper butt joint
241 - 276 MPa
35000 - 40000 psi
Nickel-Silver butt joint
241 - 310 MPa
35000 - 45000 psi
Brass butt joint
Elongation at Break 8.0 - 9.0 %
8.0 - 9.0 %
% in 2", Copper butt joint
9.0 - 18 %
9.0 - 18 %
% in 2", Brass butt joint
Thermal Properties Metric English Comments
Melting Point 677 - 857.2 °C
1250 - 1575 °F
Solidus 677 °C
1250 °F
Melting Point
Liquidus 857.2 °C
1575 °F
Flow Point
Component Elements Properties Metric English Comments
Copper, Cu 51.5 - 53.5 %
51.5 - 53.5 %
Other, total <= 0.15 %
<= 0.15 %
Silver, Ag 24 - 26 %
24 - 26 %
Zinc, Zn 21.5 - 23.5 %
21.5 - 23.5 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.00000706 ohm-cm
0.00000706 ohm-cm
Descriptive Properties Value Comments
Color Brass Yellow
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