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  • Automotive
  • Marine

Typical Uses

Mechanical Gears, Worm Drives, Valve Guides, Seats

Bar Length : 10ft - 12ft
Square : up to 5''
Hollow : 1 1/2"X3/4" - 11 1/2"X10 1/2"
Round : 1" - 11 3/4"
Rectangle : up to 11'' W
Product availabillity


Chemical Composition

(%max, unless shown as range or min)


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

Applicable Specifications

* ASTM B505

Fabrication Processes

* Continuous Casting

Fabrication Properties

Joining TechniqueSuitability
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingExcellent
Coated Metal Arc WeldingFair
Machinability Rating20

Mechanical Properties (ASTM B505)

Tensile Strength, minAYield Strength, at 0.5% Extension Under Load, minAElongation in 2 in.
or 50 mm, min, %

A Minimum tensile strength and yield strength shall be reduced 10% for cast bars having a cross section, thickness, diameter, or wall of 4 in. (102 mm) or more.

The cross sections are the diameter of a round solid, the distance across the flats of a solid hexagon, the thickness of a rectangle, and the wall thickness of a tube.

Physical Properties

US CustomaryMetric
Density0.260 lb/in3 at 68 F7.43 gm/cm3 at 20 C
Specific Gravity7.437.43
Electrical Resistivity80.2 ohms-cmil/ft at 68 F13.33 microhm-cm at 20 C
Electrical Conductivity3 %IACS at 68 FMegaSiemens/cm at 20 C
Coefficient of Thermal Expansion8.9·10-6 per °F (68-572 F)·10-6 per °C (20-300 C)
Specific Heat Capacity0.09 Btu/lb/°F at 68 FJ/kg · °K at 20 C
Modulus of Elasticity in Tension18000 ksiMPa

* TQ 50 Temper, Field Strength 16 kA/m
** As Cast, Field Strength 16 kA/m