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Chemical Composition
Elements
Cu(1) P Ag(2) Mg
(1) Cu value includes Ag.
(2) Ag 0.027 - 0.10% min is the equivalent of, Ag 8 - 30 Troy Oz min.
Min (%) 99.75 0.040 0.027 0.08
Max (%) 0.080 0.10 0.13
Mechanical Properties *
Form Temper Temper Code Tensile Strength
(ksi)
YS-0.2% Offset
(ksi)
YS-0.5% Ext
(ksi)
Elongation
(%)
Rockwell B scale Rockwell F scale Fatigue Strength**
(ksi)
Section Size
(in)
* Measured at room temperature, 68°F (20°C). ** Fatigue Strength: 100 x 106 cycles, unless indicated as [N] x 106.
Flat Products 1/2 Hard H02 53 Typ
47 Typ
47 Typ
13 Typ
92 Typ
0.04
1/4 Hard H01 45 Typ
36 Typ
36 Typ
25 Typ
89 Typ
0.04
1/4 Hard H01 45 Typ
36 Typ
36 Typ
28 Typ
89 Typ
0.2
Extra Spring H10 72 Typ
71 Typ
68 Typ
3 Typ
80 Typ
0.04
Hard H04 62 Typ
57 Typ
57 Typ
5 Typ
97 Typ
24 Typ 0.04
Light Anneal O50 40 Typ
18 Typ
18 Typ
40 Typ
70 Typ
0.2
Light Anneal O50 40 Typ
18 Typ
18 Typ
34 Typ
70 Typ
15 Typ 0.04
Special Spring H12 75 Typ
73 Typ
70 Typ
3 Typ
82 Typ
0.04
Spring H08 67 Typ
67 Typ
65 Typ
4 Typ
100 Typ
23 Typ 0.04
Super Spring H14 80 Typ
75 Typ
72 Typ
3 Typ
84 Typ
0.04
Physical Properties
(1)Volume basis after precipitation heat treatment.
Melting Point - Liquidus°F 1980
Melting Point - Solidus°F 1972
Densitylb/cu in. at 68°F 0.322
Specific Gravity 8.91
Electrical Conductivity% IACS at 68°F 90 (1)
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 200
Coefficient of Thermal Expansion 68-21210 to -6 power per °F (68 – 212°F) 9.8
Specific Heat CapacityBtu/ lb /°F at 68°F 0.092
Modulus of Elasticity in Tensionksi 17000
Modulus of Rigidityksi 6400
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Spot Weld Good
Seam Weld Not Recommended
Butt Weld Not Recommended
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Excellent
Forgeability Rating 65
Machinability Rating 20
Common Fabrication Processes
  • Bending
  • Blanking
  • Drawing
  • Etching
  • Forming
  • Machining
  • Shearing
  • Spinning
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 900 1000
Hot Working Temperature 1400 1600
Typical uses
Product Category Product Reason Category Reason
Electrical Commutators for Electric Motors Conductivity (Electrical) Electrical Conductivity
Commutators for Electric Motors Conductivity (Thermal) Thermal Conductivity
Commutators for Electric Motors Corrosion Resistance Corrosion Resistance
Commutators for Electric Motors Machining Characteristics Machinability
Commutators for Electric Motors Mechanical Properties Retains Strength at High Temperatures
Conductors in Solid State Devices Conductivity (Electrical) Electrical Conductivity
Conductors in Solid State Devices Conductivity (Thermal) Thermal Conductivity
Conductors in Solid State Devices Corrosion Resistance Corrosion Resistance
Conductors in Solid State Devices Mechanical Properties Retains Strength at High Temperatures
Contacts Conductivity (Electrical) Electrical Conductivity
Contacts Conductivity (Thermal) Thermal Conductivity
Contacts Corrosion Resistance Corrosion Resistance
Contacts 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 Forming Characteristics Formability
Electronic Components Conductivity (Thermal) Thermal Conductivity
Electronic Components Corrosion Resistance Corrosion Resistance
Electronic Components Mechanical Properties Moderate Strength
Electronic Components Mechanical Properties Retains Strength at High Temperatures
Fittings Conductivity (Thermal) Thermal Conductivity
Fittings Corrosion Resistance Corrosion Resistance
Fittings Mechanical Properties Moderate Strength
Fittings Mechanical Properties Retains Strength at High Temperatures
Flexing Switch Parts Conductivity (Electrical) Electrical Conductivity
Flexing Switch Parts Conductivity (Thermal) Thermal Conductivity
Flexing Switch Parts Corrosion Resistance Corrosion Resistance
Flexing Switch Parts Mechanical Properties High Endurance Limit
Lead Frames Conductivity (Electrical) Electrical Conductivity
Lead Frames Conductivity (Thermal) Thermal Conductivity
Lead Frames Corrosion Resistance Corrosion Resistance
Lead Frames Softening Resistance Resistance to Softening
Tinsel Wire Corrosion Resistance Corrosion Resistance
Tinsel Wire Mechanical Properties Moderate Strength
Tinsel Wire Mechanical Properties Retains Strength at High Temperatures
Wire, High Strength for Aircraft Hook Up Corrosion Resistance Corrosion Resistance
Wire, High Strength for Aircraft Hook Up Mechanical Properties Moderate Strength
Wire, High Strength for Aircraft Hook Up Mechanical Properties Retains Strength at High Temperatures
Fasteners Clamps Conductivity (Electrical) Electrical Conductivity
Clamps Conductivity (Thermal) Thermal Conductivity
Clamps Corrosion Resistance Corrosion Resistance
Clamps Mechanical Properties Retains Strength at High Temperatures
Industrial Diaphragms Corrosion Resistance Corrosion Resistance
Diaphragms Mechanical Properties Moderate Strength
Diaphragms Mechanical Properties Retains Strength at High Temperatures
Heat Sinks Conductivity (Thermal) Thermal Conductivity
Heat Sinks Corrosion Resistance Corrosion Resistance
Heat Sinks Forming Characteristics Formability
Heat Sinks Softening Resistance Resistance to Softening
High Conductivity, Light Duty Springs Conductivity (Electrical) Electrical Conductivity
High Conductivity, Light Duty Springs Conductivity (Thermal) Thermal Conductivity
High Conductivity, Light Duty Springs Corrosion Resistance Corrosion Resistance
High Conductivity, Light Duty Springs Mechanical Properties Moderate Strength
High Conductivity, Light Duty Springs Mechanical Properties Retains Strength at High Temperatures
Resistance Welding Electrodes Conductivity (Electrical) Electrical Conductivity
Resistance Welding Electrodes Conductivity (Thermal) Thermal Conductivity
Resistance Welding Electrodes Corrosion Resistance Corrosion Resistance
Resistance Welding Electrodes Corrosion Resistance Oxidation Resistance
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Strip ASTM B888/B88M COPPER ALLOY STRIP FOR USE IN MANUFACTURE OF ELECTRICAL CONNECTORS OR SPRING CONTACTS
Corrosion Properties

No Corrosion Properties Available.