Cerrotru 281

$18.25

*all pricing is in CAD

Cerrotru (281) is a  lead-free alloy that can be melted using a conventional stove-top element.

Cerrotru is sold per 1 pound ingots. Adding 3 ingots to your cart = 3 lbs of material.

See how this product can be used as an inlay in woodgrain!

SKU: Cerrotru Category: Tags: , ,

Description

Cerrotru (281) is a  lead-free alloy that can be melted using a conventional stove-top element. At Purity, we manufacture our Cerrotru using only 100% virgin metals (not recycled). Each ingot is approximately 1 lb so if you need 3 lbs, simply add a quantity of 3 to your cart.

Custom alloys are always available. If you do not see the formula you need here or if you are interested in making a very large order, please contact us directly for pricing and availability.

See how this product can be used as an inlay in woodgrain!

 

Chemical Characteristics

LOW 281
Typical End Use Melt Temp: 281°F (138°C) Density: 0.3090 lb/in3(8.72)
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
Molds for plastics, sheet plastics, plastic teeth, prosthetic development
Potting electronic components
Laps for rifle barrels.
INDUSTRY EQUIVALENTS: AIM 138, AsarcoLo 281, CerroTRU, Indalloy 281, Ostalloy 281

Cerro Alloys Physical Characteristics

Eutectics Non-Eutectics
Properties Low Low Low Low Low Low Low Low
117 136 158 255 281 158-190 217-440 281-338
Melting Temperature (oF) 117 136 158 255 281 165 240 302
Range oF 117-117 136 158-158 255-255 281-281 158-190 217-440 281-338
Melting Temperature (oC) 47 57 70 124 138 72 116 175
Range oC 47 – 47 57 – 57 70 – 70 124 – 124 138 – 138 70 – 88 103 – 227 138- 170
Tensile Strength Lbs/In2 5400 6300 5990 6400 8000 5400 13000 8000
Tensile Strength Kg/mm2 3.8 4.4 4.2 4.5 5.6 3.8 9.1 5.6
%Elongation in slow Loading 1.5 50 200 60-70 200 220 <1% 200
Brinell Hardness No. 12 14 9.2 10.2 22 9 19 22
*Specific Heat – Liquid/Solid .035 .032 .040 .035 .045 .040 .040 .047
*Latent Heat – Fusion Btu/Lb. 6 8 14 7.2 20 10 22
Conductivity (Electrical)
Compared with Pure Copper
3.34% 2.43% 4.17% 1.75% 5.00% 4.27% 2.57% 7.77%
*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 Low Low
117 136 158 255 281 158-190 217-440 281-338
6 Minutes +.0002 +.0002 +.0027 -.0011 +.0007 -.0007 +.0014 -.0001
30 Minutes .0000 +.0001 +.0045 -.0010 +.0006 -.0009 +.0047 -.0001
1 Hour -.0001 .0000 +.0051 -.0008 +.0006 .0000 +.0048 -.0001
5 Hours -.0002 -.0002 +.0051 .0000 +.0005 +.0018 +.0049 -.0001
1 Day -.0002 -.0002 +.0051 +.0008 +.0005 +.0022 +.0051 -.0001
21 Days -.0002 -.0002 +.0057 +.0022 +.0005 +.0025 +.0061 -.0001
Cumulative Growth and Shrinkage, Inch per Inch Compared to Cold Mold Dimensions.
Test Bar 2″ x 2″ x 10″.

* Please Note: Due to the irregular shape of this metal, the weight of your shipped order is approximate.

Additional information

Weight 1 lbs
Dimensions 6 x 1 x 1 in