Find suppliers for this alloyC66420
Chemical Composition
(1) Cu + Sum of Named Elements 99.5% min. (2) Cu value includes Ag.
Min (%)12.70.50
Max (%)Rem17.01.5
Mechanical Properties*
Temper Code
Tensile Strength
YS-0.2% Offset
Section Size
Flat ProductsNominal Grain Size 0.005 mmOS00560   Typ
49   Typ
25   Typ
* Measured at room temperature, 68°F (20°C).
Physical Properties
Melting Point - Liquidus°F1880
Melting Point - Solidus°F1830
Densitylb/cu in. at 68°F0.316
Specific Gravity8.75
Electrical Conductivity% IACS at 68°F35
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F87
Coefficient of Thermal Expansion 68-57210⁻⁶ per °F (68 – 572°F)11
Specific Heat CapacityBtu/ lb /°F at 68°F0.09
Modulus of Elasticity in Tensionksi17300
Modulus of Rigidityksi6400
Fabrication Properties
Technique Suitability
Oxyacetylene WeldingGood
Gas Shielded Arc WeldingGood
Coated Metal Arc WeldingNot Recommended
Spot WeldFair
Seam WeldNot Recommended
Butt WeldGood
Capacity for Being Cold WorkedExcellent
Capacity for Being Hot FormedGood
Machinability Rating30
Common Fabrication Processes
  • Brazing
  • Forming
  • Welding
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Hot Treatment14501650
Typical uses
Product Category Product Reason Category Reason
IndustrialBrazing, Heat resistant Radiator TubesBrazing CharacteristicsBrazability
Brazing, Heat resistant Radiator TubesForming CharacteristicsFormability
Applicable Specifications

No applicable specifications for this alloy

Corrosion Properties

No information available.