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Chemical Composition
Elements
Cu(1,2) Sn Fe Cd
(1) Cu + Sum of Named Elements 99.5% min.
(2) Cu value includes Ag.
Min (%) 0.50 0.6
Max (%) Rem 0.7 0.02 1.0
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 Rockwell 30T scale Fatigue Strength**
(ksi)
Section Size
(in)
Cold Work
(%)
* Measured at room temperature, 68°F (20°C). ** Fatigue Strength: 100 x 106 cycles, unless indicated as [N] x 106.
Bar Hard H04 56 Typ
52 Typ
23 Typ
60 Typ
.375
Flat Products Extra Hard H06 69 Typ
66 Typ
2 Typ
67 Typ
0.04
Extra Spring H10 76 Typ
69 Typ
1.5 Typ
73 Typ
0.04
Hard H04 66 Typ
5 Typ
79 Typ
0.04
Spring H08 73 Typ
66 Typ
2 Typ
72 Typ
0.04
Rod Extra Hard H06 77 Typ
73 Typ
71 Typ
9 Typ
78 Typ
310 Typ 0.5 67
Hard H04 65 Typ
55 Typ
15 Typ
75 Typ
0.5 35
Nominal Grain Size 0.050 mm OS050 40 Typ
13 Typ
14 Typ
53 Typ
62 Typ
20 Typ 0.5
Wire Hard H04 95 Typ
0.08
Nominal Grain Size 0.025 mm OS025 42 Typ
0.08
Physical Properties
Melting Point - Liquidus°F 1958
Densitylb/cu in. at 68°F 0.321
Specific Gravity 8.89
Electrical Conductivity% IACS at 68°F 60
Thermal ConductivityBtu/ sq ft/ ft hr/ °F at 68°F 146
Coefficient of Thermal Expansion 68-57210 to -6 power per °F (68 – 572°F) 9.8
Specific Heat CapacityBtu/ lb /°F at 68°F 0.09
Modulus of Elasticity in Tensionksi 17000
Fabrication Properties
Technique Suitability
Soldering Excellent
Brazing Excellent
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Not Recommended
Spot Weld Not Recommended
Seam Weld Not Recommended
Butt Weld Excellent
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Good
Machinability Rating 20
Common Fabrication Processes
  • Drawing
  • Etching
  • Forming and Bending
  • Heading and Upsetting
  • Hot forging
  • Piercing and Punching
Thermal Properties
Treatment Minimum* Maximum*
* Temperature is measured in Fahrenheit.
Annealing 800 1450
Hot Working Temperature 1425 1600
Typical uses
Product Category Product Reason Category Reason
Electrical Clips Conductivity (Electrical) Electrical Conductivity
Clips Conductivity (Thermal) Thermal Conductivity
Clips Corrosion Resistance Corrosion Resistance
Clips Mechanical Properties Moderate Strength
Clips Solderability Solderability
Contacts Conductivity (Electrical) Electrical Conductivity
Contacts Conductivity (Thermal) Thermal Conductivity
Contacts Corrosion Resistance Corrosion Resistance
Contacts Mechanical Properties Moderate Strength
Contacts Solderability Solderability
Contacts Welding Characteristics Arc Erosion Resistant
Flat Cable Conductivity (Electrical) Electrical Conductivity
Flat Cable Conductivity (Thermal) Thermal Conductivity
Flat Cable Corrosion Resistance Corrosion Resistance
Flat Cable Mechanical Properties Moderate Strength
Flat Cable Solderability Solderability
Flat Cable Welding Characteristics Arc Erosion Resistant
Flat Cable Welding Characteristics Weldability
Springs Conductivity (Electrical) Electrical Conductivity
Springs Conductivity (Thermal) Thermal Conductivity
Springs Corrosion Resistance Corrosion Resistance
Springs Mechanical Properties High Modulus of Elasticity
Springs Solderability Solderability
Trolley Wire Conductivity (Electrical) Electrical Conductivity
Trolley Wire Conductivity (Thermal) Thermal Conductivity
Trolley Wire Corrosion Resistance Corrosion Resistance
Trolley Wire Friction & Wear Properties Wear Resistance
Trolley Wire Mechanical Properties Moderate Strength
Industrial Resistance Welding Electrodes Conductivity (Electrical) Electrical Conductivity
Resistance Welding Electrodes Conductivity (Thermal) Thermal Conductivity
Resistance Welding Electrodes Welding Characteristics Arc Erosion Resistant
Resistance Welding Electrodes Welding Characteristics Weldability
Applicable Specifications
Form Specific Sub-Form Application System Standard Description
Wire Trolly ASTM B9 BRONZE TROLLEY WIRE
ASTM B105 HARD-DRAWN COPPER ALLOY WIRES FOR ELECTRICAL CONDUCTORS
Corrosion Properties

No Corrosion Properties Available.