Featuring 158°F, 203°F radiation shielding alloys, pipe bending alloys, and low temperature solders. Eutectic: melting points from 117° – 281°F.Non-eutectic: melting points from 107° – 338°F.Mellottes metal, Rose metal, Wood’s metal, and others. Low-melting alloy wire.

Low-Melting or Fusible alloys (Also known as Eutectic and Non-Eutectic Alloys) are generally the alloys that melt below 450 Deg. F. ( 233 Deg. C ). The most useful are the alloys containing high percentages of Bismuth combined with Lead, Tin, Cadmium, Indium and other metals. The low melting temperature and unique growth/shrinkage characteristics of these alloys lead to a greater diversity in useful applications than almost any other alloy system.

Applications:

From radiation therapy shielding applications to creating chucks for holding parts during machining , from being used as filler material when bending pipe or tube to creating fusible elements in automatic fire sprinklers , Low-Melting alloys continue to have a quiet yet profound impact on our lives.

Forms:

Cake, Ingot, Bar, Shot, Wire, Stick, Strip & Custom Shapes

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  • This is a Bismuth based Eutectic low melting alloy used very often to bend tubes and rolled or extruded shapes. This alloy which is normally used for tubes up to 2-1/2" Diameter allows them to be bent or formed to the desired shape without any kinks. Without using this material the tubes or shapes may kink or bend irregularly. It can also be used for work-holding, fusible safety devices and low temperature soldering.
    Forms:
    • 2 lb. Cakes Even Weight
    • Capping Bars
    • 1/8" & Down Shot
    • .05", 1/8", 3/32" Dia Solid Wire
    • 1/8" x 18" Cast Strips
    Belmont Product Code 2505
    Nominal Composition:
    • 50% Bi
    • 10% Cd
    • 26.7% Pb
    • 13.3% Sn
    Technical Info:
    • Melting Point - Solidus 158 F, 70 C
    • Melting Point - Liquidus 158 F, 70 C
    • Short-Term Tensile Strength lbs/sq.in. 5990
    • Yield Temperature 158
    • Weight lbs/cu.in 0.339
    • Brinnell Hardness No. (500 kg) 9.2
    • Growth/Shrinkage - Time after Casting: after 2 mi.: 0.0025
    • after 1 hour: 0.0051
    • after 24 hrs: 0.0051
    • after 500 hrs: 0.0057
  • This is a Tin based non-eutectic low melting alloy . The principle uses of this alloy are in applications similar to investment casting in which it substitutes for the so called " lost wax " pattern dies. It's other applications also include proof casting and sealing or soldering in low-temperature applications.    
    Forms:
    • 2 lb Cakes Even Weight
    • Slug
    Belmont Product Code 2405
    Nominal Composition:
    • 40% Bi
    • 60% Sn
    Technical Info:
    • Melting Point - Solidus 281 F, 138 C
    • Melting Point - Liquidus 338 F, 170 C
    • Short-Term Tensile Strength lbs/sq.in. 8000
    • Yield Temperature 302
    • Weight lbs/cu.in 0.296
    • Brinnell Hardness No. (500 kg) 22
    • Growth/Shrinkage - Time after Casting: after 2 mi.: -0.0001
    • after 1 hour: -0.0001
    • after 24 hrs: -0.0001
    • after 500 hrs: -0.0001
  • This is a Bismuth based Eutectic low melting alloy used for tooling and production aids. It provides you with easily castable material that is ready for use as soon as it freezes. This alloy can be recovered easily and recycled into new uses a number of times. It is mainly used in the optical industry for lens blocking when grinding glass, plastic lenses and optical components. It's low melting point allows it not to distort the glass or plastic which it supports. Also can be used for proof casting as well.
    Forms:
    • 2 lb Cake Even Weight
    Belmont Product Code 2451
    Nominal Composition:
    • 44.7% Bi
    • 5.3% Cd
    • 22.6% Pb
    • 19.1% In
    • 8.3% Sn
    Technical Info:
    • Melting Point - Solidus 117 F, 47 C
    • Melting Point - Liquidus 117 F, 47 C
    • Short-Term Tensile Strength lbs/sq.in. 5400
    • Yield Temperature 117
    • Weight lbs/cu.in 0.32
    • Brinnell Hardness No. (500 kg) 12
    • Growth/Shrinkage - Time after Casting: after 2 mi.: 0.0005
    • after 1 hour: -0.0001
    • after 24 hrs: -0.0002
    • after 500 hrs: -0.0002
  • This is a Bismuth based Eutectic low melting alloy used for tooling and production aids. It provides you with easily castable material that is ready for use as soon as it freezes. This alloy can be recovered easily and recycled into new uses a number of times. It is mainly used in the optical industry for lens blocking when grinding glass, plastic lenses and optical components. It's low meeting point allows it not to distort the glass or plastic which it supports, Also can be used for proof casting as well. In comparison to its 117 Deg F. counterpart this alloy does not contain Cadmium.
    Forms:
    • 2 Lb. Cake Even Weight
    • 1/8" Dia Solid Wire
    • Capping Bars
    Belmont Product Code 2491
    Nominal Composition:
    • 49% Bi
    • 18% Pb
    • 21% In
    • 12% Sn
    Technical Info:
    • Melting Point - Solidus 136 F, 58 C
    • Melting Point - Liquidus 136 F, 58 C
    • Short-Term Tensile Strength lbs/sq.in. 6300
    • Yield Temperature 136
    • Weight lbs/cu.in 0.31
    • Brinnell Hardness No. (500 kg) 14
    • Growth/Shrinkage - Time after Casting: after 2 mi.: 0.0003
    • after 1 hour: 0
    • after 24 hrs: -0.0002
    • after 500 hrs: -0.0002
  • This is a Bismuth based Eutectic low melting alloy used very often to bend tubes and rolled or extruded shapes. This alloy which is normally used for tubes greater than 2-1/2" Diameter allows them to be bent or formed to the desired shape without any kinks. With out using this material the tubes or shapes may kink or bend irregularly. It can also be used for work-holding, fusible safety devices and low temperature soldering.
    Forms:
    • 2 lb Cakes Even Weight
    • 1/4# Capping Bar
    • 1/8" Dia Solid Wire
    • 10-20 Mesh
    • 1-1/2 Lb. Regular Bars
    • 40 Lb. Pigs
    Belmont Product Code 2562
    Nominal Composition:
    • 55.5% Bi
    • 44.5% Pb
    Technical Info:
    • Melting Point - Solidus 255 F, 124 C
    • Melting Point - Liquidus 255 F, 124 C
    • Short-Term Tensile Strength lbs/sq.in. 6400
    • Yield Temperature 255
    • Weight lbs/cu.in 0.38
    • Brinnell Hardness No. (500 kg) 10.2
    • Growth/Shrinkage - Time after Casting: after 2 mi.: -0.0008
    • after 1 hour: -0.0008
    • after 24 hrs: 0.0008
    • after 500 hrs: 0.0022
  • This is a Bismuth based non-eutectic alloy commonly used as a low-melting solder and also to make custom shaped blocks. It is also used to make metal inlays in wood and also useful for repairing antiques as the low melting temperature of Wood's metal makes it unlikely this will harm the original piece.
    Forms:
    • Capping Bars
    • Cakes
    • 1/4" Dia. Solid Wire
    • 1/8" Dia Solid Wire
    Belmont Product Code 2502
    Nominal Composition:
    • 50% Bi
    • 25% Pb
    • 12.5% Sn
    • 12.5% Cd
    Technical Info:
    • Melting Point - Solidus 158 F, 70 C
    • Melting Point - Liquidus 169 F, 76 C
    • Short-Term Tensile Strength lbs/sq.in. 6100
    • Yield Temperature 158
    • Weight lbs/cu.in 0.347
    • Brinnell Hardness No. (500 kg) 9.3
    • Growth/Shrinkage - Time after Casting: after 2 mi.: -0.0001
    • after 1 hour: 0.0002
    • after 24 hrs: 0.0031
    • after 500 hrs: 0.0035
  • This is a Bismuth based Eutectic low melting alloy whose main attribute is the minimal volume change between its liquid and solid state. This is the highest melting point of the bismuth-base alloys commonly used in the industry and provides an easily castable material ready for use soon after it freezes. It is used primarily for holding parts such as jet engine blades for machining and also for foundry patterns and fusible elements in safety devices.
    Forms:
    • 2 lb Cakes Even Weight
    • .063" Dia. Solid Wire on 1 Lb. Spools
    • 1/8" x 18" Cast Strips
    • 1/8" X Down Shot
    • 30 Lb. Pigs
    • 5 lb. Ingot
    Belmont Product Code 2581
    Nominal Composition:
    • 58% Bi
    • 42% Sn
    Technical Info:
    • Melting Point - Solidus 281 F, 138 C
    • Melting Point - Liquidus 281 F, 138 C
    • Short-Term Tensile Strength lbs/sq.in. 8000
    • Yield Temperature 281
    • Weight lbs/cu.in 0.315
    • Brinnell Hardness No. (500 kg) 22
    • Growth/Shrinkage - Time after Casting: after 2 mi.: 0.0007
    • after 1 hour: 0.0006
    • after 24 hrs: 0.0005
    • after 500 hrs: 0.0005
  • This is a Bismuth based non-eutectic alloy used originally for making punch dies. It is now also used to make a wide variety of plates, chuck jaws and other holding devices for machine shops and manufacturing operations.
    Forms:
    • 2 lb Cakes
    Belmont Product Code 2481
    Nominal Composition:
    • 48% Bi
    • 28.5% Pb
    • 14.5% Sn
    • 9% Sb
    Technical Info:
    • Melting Point - Solidus 218 F, 103 C
    • Melting Point - Liquidus 440 F, 227 C
    • Short-Term Tensile Strength lbs/sq.in. 13000
    • Yield Temperature 240
    • Weight lbs/cu.in 0.343
    • Brinnell Hardness No. (500 kg) 19
    • Growth/Shrinkage - Time after Casting: after 2 mi.: 0.0008
    • after 1 hour: 0.0048
    • after 24 hrs: 0.0051
    • after 500 hrs: 0.0061
  • This is a Bismuth based non-eutectic alloy which has unique properties of shrinking immediately upon solidification and growing back to zero in 1 hour, followed by additional growth. This shrinkage-growth makes it an ideal alloy for proof casting and precision measurement of internal dimensions.  
    Forms:
    • 2 lb Cakes
    Belmont Product Code 2431
    Nominal Composition:
    • 42.5% Bi
    • 37.7% Pb
    • 11.3% Sn
    • 8.5% Cd
    Technical Info:
    • Melting Point - Solidus 160 F, 71 C
    • Melting Point - Liquidus 190 F, 88 C
    • Short-Term Tensile Strength lbs/sq.in. 5400
    • Yield Temperature 162.5
    • Weight lbs/cu.in 0.341
    • Brinnell Hardness No. (500 kg) 9
    • Growth/Shrinkage - Time after Casting: after 2 mi.: -0.0004
    • after 1 hour: 0
    • after 24 hrs: 0.0022
    • after 500 hrs: 0.0025
  • This is a Bismuth based eutectic alloy which finds uses in shielding during medical radiation treatments and is also a cadmium-free solution for radiation therapy. This material also has a rapid growth of up to .0061 after casting. It has also been used as anchoring material and for designing fusible links.
    Forms:
    • 2 lb Cake Even Weight
    • 1/8", 1/32" Dia. Solid Wire
    • Irregular Shot
    • Pigs
    Belmont Product Code 2531
    Nominal Composition:
    • 52.5% Bi
    • 32% Pb
    • 15.5% Sn
    Technical Info:
    • Melting Point - Solidus 203 F, 95 C
    • Melting Point - Liquidus 203 F, 95 C
    • Short-Term Tensile Strength lbs/sq.in. 6100
    • Yield Temperature 203
    • Weight lbs/cu.in 0.35
    • Brinnell Hardness No. (500 kg) 9
    • Growth/Shrinkage - Time after Casting: after 2 mi.: -0.0002
    • after 1 hour: 0.0055
    • after 24 hrs: 0.0057
    • after 500 hrs: 0.0061
  • This is Bismuth based non-eutectic alloy which does not contract upon cooling. It is mainly used as a solder but also as a heat transfer medium. Another application for this material is to serve as a valve element in automatic fire sprinklers. The valve, having a low melting point, melts in fire and provides water to stop the fire from spreading.
    Forms:
    • 2 lb Cakes Even Weight
    • 1/8" x 18" Cast Strips
    • 1/16", 1/32" Dia. Solid Wire
    • Approx. 1/2" x 6" x 12" Broken Slabs
    Belmont Product Code 2503
    Nominal Composition:
    • 50% Bi
    • 25% Pb
    • 25% Sn
    Technical Info:
    • Melting Point - Solidus 203 F, 95 C
    • Melting Point - Liquidus 239 F, 115 C
    • Short-Term Tensile Strength lbs/sq.in. 6200
    • Yield Temperature 203
    • Weight lbs/cu.in 0.3365
    • Brinnell Hardness No. (500 kg) 9.5
    • Growth/Shrinkage - Time after Casting: after 2 mi.: -0.0001
    • after 1 hour: 0.0045
    • after 24 hrs: 0.0052
    • after 500 hrs: 0.006

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