Alchemy Custom Lead Castings and Extrusions
Dan - Cell Phone - 905-334-9844    Bill - Cell Phone - 905-518-6091
Custom Lead Casting and Extrusions - Ounces to Tons
Worldwide Shipping - Free Quotes - Minimum Order = $150
If it is Lead - We Stock It, Make It, or Can Find It.

Low Temp Alloys (Fusible Alloys)


Alloys and Industry Equivalents

 
Alloy Name Part #

Industry Equivalents

AIM AsarcoLo Cerro Indalloy Ostalloy
   Lead Rich Alloys
    LOW 158 BIPB27SN13CD10 70 158 CerroBEND 158 158
    LOW 158-190 BIPB38SN11CD9 70 158 CerroBEND 158 158
LOW 174            
    LOW 203 BIPB32SN15.5 Bi46   CerroSHIELD 42  
    LOW 217-440 BIPB29CD15SB9   217-440 CerroMATRIX 217-440  
    LOW 255 BIPB44.5 124 255 CerroBASE 255 255
   Lead-Free Alloys
    LOW 281 BISN42 138 281 CerroTRU 281 281
    LOW 281-338 BISN40 138/170   CerroCAST   281338






LOW 158
Typical End Use Melt Temp:  158°F (70°C)
Bismuth  50%
Lead 26.7%
Tin 13.3%
Cadmium 10%
  •  Anchor bushings in drill jigs
  •  Internal or external support of delicate parts for machining
  •  Cores for spinning
  •  Fusible mandrels in filament winding.
  •  Fiberglas lamination
  •  Drop hammer and embossing dies
  •  Tube bending filler (up to 1-3/4" diameter)
  •  Heat transfer medium in processing plastics, chemicals, etc. (up to 255°F)
  •  Shielding Blocks for Nuclear Medicine
INDUSTRY EQUIVALENTS: AIM 70, AsarcoLo 158, CerroBEND, Indalloy 158, Ostalloy 158
LOW 158-190
Typical End Use Melt Temp:  158-190°F (70-88°C)
Bismuth 42.5%
Lead 37.7%
Tin 11.3%
Cadmium 8.5%
  • Toy soldier casting
  • Proof casting cavities (threads, dies, moulds, blind holes)
  • Duplicate patterns in foundry match-plate making
  • Supporting work pieces while machining
  • Spray coating wood patterns
  •  Masks for electroplating and spray-painting.
INDUSTRY EQUIVALENTS: AIM 70/88, AsarcoLo 158-190, CerroSAFE
LOW 174
Typical End Use Melt Temp:  174-174°F (79°C)
Bismuth 57%
Tin 17%
Indium 26%

 

INDUSTRY EQUIVALENTS: 
LOW 203
Typical End Use Melt Temp:  203°F (95°C)
Bismuth 52.5%
Lead 32%
Tin 15.5%
  • Cadmium Free alternative for LOW 158 for Nuclear Medicine.

INDUSTRY EQUIVALENTS: AIM Bi46, CerroSHIELD, Indalloy 42
LOW 217-440
Typical End Use Melt Temp:  217-440°F (103-227°C)
Bismuth 48%
Lead 28.5%
Cadmium 14.5%
Antimony 9%
  • Originated by GE for anchoring punches in dies
  • Anchor non-moving parts in machinery; hold down bolts in concrete floors, locator parts in tooling docks
  • Split jaw chucks, jigs, fixtures
  • Metal forming dies, form blocks, joggle jaws
  • Repairing broken dies
  • Filling blowholes in castings.
INDUSTRY EQUIVALENTS: AsarcoLo 217-440, CerroMATRIX, Indalloy 217-440
LOW 255
Typical End Use Melt Temp:  255°F (124°C)
Bismuth  55.5%
Lead 44.5%
  • Anchor cutlery handles, inserts in wood, metal parts in glass (Tuflex doors)
  • Make fusible spinning chucks
  • Mandrel for electroforms
  • Drop hammer dies, stretch form blocks
  • Moulds for plaster, plastics
  • Tube bending filler (over 1-3/4" diameter)
  • Hydrodynamic forming, seamless fittings
  • Duplicate patterns in pottery and foundry
  • Liquid metal in autoclaves, heat-treating
  • Heat transfer (Up to 327 °F)
  • Shielding Blocks for Nuclear Medicine
INDUSTRY EQUIVALENTS: AIM 124, AsarcoLo 255, CerroBASE, Indalloy 255, Ostalloy 255
LOW 281
Typical End Use Melt Temp:  281°F (138°C)
Bismuth 58%
Tin 42%
  • Anchor shafts in permanent magnet rotors, locator members in aircraft assembly fixtures, metal parts in glass, magnets in fixtures
  • Make nests for parts in jigs and dial feed stations
  • Cores for electroforming
  • Embossing dies, form blocks
  • Joggle jaws
  • Lost wax pattern dies
  • Duplicate foundry patterns
  • Tracer models in profiling
  • Moulds for plastics, sheet plastics, plastic teeth, prostethetic development
  • Potting electronic components
  • Laps for rifle barrels.
INDUSTRY EQUIVALENTS: AIM 138, AsarcoLo 281, CerroTRU, Indalloy 281, Ostalloy 281
LOW 281-338
Typical End Use Melt Temp:  281-338°F (138-170°C)
Bismuth 60%
Tin 40%
  • Parallels LOW 281 in its end uses
  • Electroforming mandrels, lost wax pattern dies due to greater dimensional accuracy
  • Holding jet turbine engine blades for machining.
INDUSTRY EQUIVALENTS:  AIM 138/170, CerroCAST, Ostalloy 281338
  Eutectics Non-Eutectics
Properties Low Low Low Low Low Low
158 255 281 158-190 217-440 281-338
Melting Temperature (F) 158 255 281 165 240 302
Range F 158-158 255-255 281-281 158-190 217-440 281-338
Yield Temp 158 255 281 162.5 240 302
Tensile Strength Lbs/In2 5990 6400 8000 5400 13000 8000
%Elongation in slow Loading 200 60-70 200 220 <1% 200
Brinell Hardness No. 9.2 10.2 22 9 19 22
*Specific Heat - Liquid .040 .042 .045 .040 .040 .047
*Specific Heat - Solid .040 .03+ .045 .040 .045 .047

*Latent Heat - Fusion Btu/Lb.

14 7.2 20 10 - 22

Conductivity (Electrical)
Compared with Pure Copper

4% 3% 4.5% 4% 3.2% 4.6%

*Maximum Load -
30 Seconds Lbs/In2

10000 8000 15000 9000 16000 15000

*Maximum Load -
 5 Minutes Lbs/In2 

4000 4000 9000 3800 10000 9500

*Safe Load Sustained - 
Lbs/In2

300 300 500 300 300 50
  • *Approximate  
  

Eutectics

Non Eutectics

Growth/Shrinkage Time after Casting

Low Low Low Low Low Low
158 255 281 158-190 217-440 281-338
2 Minutes +.0025 -.0008 +.0007 -.0004 +.0008 -.0001
6 Minutes +.0027 -.0011 +.0007 -.0007 +.0014 -.0001
30 Minutes +.0045 -.0010 +.0006 -.0009 +.0047 -.0001
1 Hour +.0051 -.0008 +.0006 .0000 +.0048 -.0001
2 Hours +.0051 -.0004 +.0006 +.0016 +.0048 -.0001
5 Hours +.0051 .0000 +.0005 +.0018 +.0049 -.0001
7 Hours +.0051 +.0001 +.0005 +.0019 +.0050 -.0001
10 Hours +.0051 +.0003 +.0005 +.0019 +.0050 -.0001
1 Day +.0051 +.0008 +.0005 +.0022 +.0051 -.0001
4 Days +.0051 +.0015 +.0005 +.0025 +.0055 -.0001
8 Days +.0051 +.0019 +.0005 +.0025 +.0058 -.0001
21 Days +.0051 +.0022 +.0005 +.0025 +.0061 -.0001
  • Cumulative Growth and Shrinkage, Inch per Inch Compared to Cold Mold Dimensions.
  • Test Bar 2" x 2" x 10".


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Dan - Cell Phone - 905-334-9844    Bill - Cell Phone - 905-518-6091
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