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Chemical Composition
Elements
Cu(1,2) Zr
(1) Cu + Sum of Named Elements 99.9% min.
(2) Cu value includes Ag.
Min (%) 99.80 0.05
Max (%) 0.15
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)
YS-0.2% Offset
(ksi)
Elongation
(%)
Rockwell B scale Rockwell F scale Rockwell 30T scale Section Size
(in)
* Measured at room temperature, 68°F (20°C).
Flat Products 1/2 Hard H02 47 Typ
45 Typ
9 Typ
37 Typ
87 Typ
56 Typ
0.04
1/4 Hard H01 42 Typ
37 Typ
13 Typ
30 Typ
81 Typ
48 Typ
0.04
3/4 Hard H03 51 Typ
49 Typ
6 Typ
47 Typ
90 Typ
59 Typ
0.04
Extra Hard H06 63 Typ
61 Typ
3 Typ
62 Typ
64 Typ
0.04
Hard H04 57 Typ
55 Typ
4 Typ
57 Typ
59 Typ
61 Typ
0.04
Nominal Grain Size 0.015 mm OS015 38 Typ
10 Typ
36 Typ
47 Typ
0.04
Spring H08 68 Typ
66 Typ
2 Typ
64 Typ
65 Typ
0.04
Physical Properties
Melting Point - Liquidus°F 2008
Melting Point - Solidus°F 1886
Densitylb/cu in. at 68°F 0.323
Specific Gravity 8.94
Electrical Conductivity% IACS at 68°F 95
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 208
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 9.8
Coefficient of Thermal Expansion 68-39210 to -6 power per °F (68 – 392°F) 9.8
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 9.8
Specific Heat CapacityBtu/ lb /°F at 68°F 0.092
Modulus of Elasticity in Tensionksi 17500
Modulus of Rigidityksi 6730
Poisson's Ratio 0.3
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Good
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Machinability Rating 20
Common Fabrication Processes
  • Blanking
  • Cupping
  • Deep Drawing
  • Forming
  • Piercing
  • Stamping
Thermal Properties

No thermal properties for this alloy

Typical uses
Product Category Product Reason Category Reason
Electrical Basses for Power Transmitters Conductivity (Electrical) Electrical Conductivity
Basses for Power Transmitters Conductivity (Thermal) Thermal Conductivity
Basses for Power Transmitters Corrosion Resistance Corrosion Resistance
Basses for Power Transmitters Mechanical Properties Retains Strength at High Temperatures
Circuit Breakers, High Temperature Conductivity (Electrical) Electrical Conductivity
Circuit Breakers, High Temperature Conductivity (Thermal) Thermal Conductivity
Circuit Breakers, High Temperature Corrosion Resistance Corrosion Resistance
Circuit Breakers, High Temperature Mechanical Properties Retains Strength at High Temperatures
Commutators for Power Transmitters Conductivity (Electrical) Electrical Conductivity
Commutators for Power Transmitters Conductivity (Thermal) Thermal Conductivity
Commutators for Power Transmitters Corrosion Resistance Corrosion Resistance
Commutators for Power Transmitters Mechanical Properties Retains Strength at High Temperatures
Electrical Connectors Conductivity (Electrical) Electrical Conductivity
Electrical Connectors Conductivity (Thermal) Thermal Conductivity
Electrical Connectors Corrosion Resistance Corrosion Resistance
Electrical Connectors Softening Resistance Resistance to Thermal Softening
Electrical Connectors Thermal Properties Resistance to Stress Relaxation
Electronic Circuits Conductivity (Electrical) Electrical Conductivity
Electronic Circuits Conductivity (Thermal) Thermal Conductivity
Electronic Circuits Corrosion Resistance Corrosion Resistance
Electronic Circuits Mechanical Properties Retains Strength at High Temperatures
Lead Frames Conductivity (Electrical) Electrical Conductivity
Lead Frames Conductivity (Thermal) Thermal Conductivity
Lead Frames Corrosion Resistance Corrosion Resistance
Lead Frames Softening Resistance Resistance to Thermal Softening
Lead Frames Thermal Properties Resistance to Stress Relaxation
Rectifiers Conductivity (Electrical) Electrical Conductivity
Rectifiers Conductivity (Thermal) Thermal Conductivity
Rectifiers Corrosion Resistance Corrosion Resistance
Rectifiers Mechanical Properties Retains Strength at High Temperatures
Soldering and Welding Tips Conductivity (Electrical) Electrical Conductivity
Soldering and Welding Tips Conductivity (Thermal) Thermal Conductivity
Soldering and Welding Tips Corrosion Resistance Corrosion Resistance
Soldering and Welding Tips Mechanical Properties Retains Strength at High Temperatures
Switch Blade Jaws Conductivity (Electrical) Electrical Conductivity
Switch Blade Jaws Conductivity (Thermal) Thermal Conductivity
Switch Blade Jaws Corrosion Resistance Corrosion Resistance
Switch Blade Jaws Mechanical Properties Moderate Strength
Switch Blade Jaws Mechanical Properties Retains Strength at High Temperatures
Switches Conductivity (Electrical) Electrical Conductivity
Switches Conductivity (Thermal) Thermal Conductivity
Switches Corrosion Resistance Corrosion Resistance
Switches Mechanical Properties Retains Strength at High Temperatures
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Sheet ASTM B747 COPPER-ZIRCONIUM ALLOY SHEET AND STRIP
Strip ASTM B888/B88M COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS
ASTM B747 COPPER-ZIRCONIUM ALLOY SHEET AND STRIP
Corrosion Properties

No Corrosion Properties Available.