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C81800 Copper Beryllium 50C Cast HIGH COPPER ALLOYS High Copper Alloys false 1992-03-09 true https://api.copper.org/alloys.xhtml/C81800
Chemical Composition
Elements
Cu(1) Ag Be Co
(1) Cu + Sum of Named Elements 99.5% min.
Min (%) 95.6 0.8 0.30 1.4
Max (%) 1.2 0.55 1.7
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)		 YS-0.2% Offset
(ksi)		 Elongation
(%)		 Rockwell B scale Torsion Modulus
(ksi)		 Proportional Limit
(ksi)
* Measured at room temperature, 68°F (20°C).
As Sand Cast As Sand Cast M01 50 Typ
 25 Typ
 20 Typ
 55 Typ
 6 Typ 15 Typ
Precipitation Hardened TF00 102 Typ
 75 Typ
 8 Typ
 96 Typ
 50 Typ
Physical Properties
Melting Point - Liquidus°F 1955
Melting Point - Solidus°F 1855
Densitylb/cu in. at 68°F 0.311
Specific Gravity 8.62
Electrical Conductivity% IACS at 68°F 45
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 150
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 10
Specific Heat CapacityBtu/ lb /°F at 68°F 0.1
Modulus of Elasticity in Tensionksi 16000
Casting Characteristics
Casting Attribute Level
Casting Yield Low
Drossing Low
Effect of Section Size Low
Fluidity Medium
Gassing Medium
Patternmakers Shrinkage inches per inch 3/16
Shrinkage in Solidification Medium
Fabrication Properties
Technique Suitability
Soldering Good
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair
Machinability Rating 20
Common Fabrication Processes

No fabrication process properties for this alloy

Thermal Properties
Treatment Minimum* Maximum* Value* Time** Medium
* Temperature is measured in Fahrenheit. ** Time is measured in minutes.
Stress Relief 500
Solution Treatment 1650 1700 1 Water
Precipitation Treatment 900 3 Air
Typical Uses

No information for this alloy

Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No Corrosion Properties Available.