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  • Electrical
  • Industrial
  • Architecture

Typical Uses

Architecture, Bridge Bearing Plates, Electrical Switch Parts, Electromechanical Spring Components, Resistance Wire, Electrical Flexing Contact Blades, Electrical Connectors, Electronic Connectors, Wire Brushes, Electronic and Precision Instrument Parts, Fuse Clips, Fasteners, Lock Washers, Fasteners, Cotter Pins, Industrial Bellows, Textile Machinery, Perforated Sheets, Chemical Hardware, Truss Wire, Springs, Sleeve Bushings, Diaphragms, Clutch Disks, Bourdon Tubes, Beater Bar, Welding Rods, Pressure Responsive Elements

Round : 1/2" - 2 1/2"
Bar Length : 10ft - 12ft
Product availabillity


Chemical Composition

(%max, unless shown as range or min)


Note: Cu + Sum of Named Elements, 99.5% min.

Applicable Specifications

*ASTM B139

Fabrication Processes

* Blanking
* Drawing
* Forming and Bending
* Heading and Upsetting
* Roll Threading and Knurling
* Stamping

Fabrication Properties

Joining TechniqueSuitability
Oxyacetylene WeldingFair
Gas Shielded Arc WeldingGood
Coated Metal Arc WeldingFair
Spot WeldGood
Seam WeldFair
Butt WeldExcellent
Capacity for Being Cold WorkedExcellent
Capacity for Being Hot FormedPoor
Machinability Rating20

Standard Temper Designation:

* H04 – Hard

Mechanical Properties

Diameter or Distance Between
Parallel Surfaces, in. [mm.]
Tensile Strength, minAElongation,
min, %
1/4 [6] to 1/2 [12] incl.7048513
over 1/2 [12] to 1 [25] incl.6041515
over 1 [25]5538018

Physical Properties

US CustomaryMetric
Melting Point – Liquidus1920 F1049 C
Melting Point – Solidus1750 F954 C
Density0.32 lb/in3 at 68 F8.86 gm/cm3 at 20 C
Specific Gravity8.868.86
Electrical Resistivity69.1 ohms-cmil/ft at 68 F11.49 microhm-cm at 20 C
Electrical Conductivity*15 %IACS at 68 F0.088 MegaSiemens/cm at 20 C
Thermal Conductivity40.0 Btu · ft/(hr · ft2·°F) at 68 F69.2 W/m ·°K at 20 C
Coefficient of Thermal Expansion9.9·10-6 per °F (68-572 F)17.8·10-6 per °C (20-300 C)
Specific Heat Capacity0.09 Btu/lb/°F at 68 F377.1 J/kg · °K at 20 C
Modulus of Elasticity in Tension16000 ksi110000 MPa
Modulus of Rigidity6000 ksi41370 MPa

* Determined on an alloy containing 5% tin and .2% phosphorus. This value will vary with the composition