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ASTM B505, SAE 430 B

  • Industrial
  • Marine
  • Electrical

Typical Uses

Wear Rings for Forming Dies for Wood Pulp Industry, Large Valve Stems, Hydraulic Cylinder Parts, Propellers, Bridge Pins, Forming Dies for Wood Pulp Industry, Cams, Gib, Gears, Hydraulic Cylinder Parts, Slow Speed, Heavy Load Bearings, Bushings, High Strength Machine Parts, Hooks, Frames, Struts, Brackets,  Electrical Components, Switches, Screw Down Nuts, Screw Down Nuts,  Marine Hardware, Rudders, Covers for Marine Hardware, Clamps, Boat Parts

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"
Hexagonal : up to 3''
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 WeldingPoor
Gas Shielded Arc WeldingPoor
Coated Metal Arc WeldingGood
Machinability Rating80

Mechanical Properties (ASTM B505)

Tensile Strength, minAYield Strength, at 0.5%
Extension Under Load, minA
Elongation 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
Melting Point – Liquidus1693 F923 C
Melting Point – Solidus1625 F885C
Density0.283 lb/in3 at 68 F7.46 gm/cm3 at 20 C
Specific Gravity7.837.83
Electrical Resistivity130.8 ohms-cmil/ft at 68 F21.74 microhm-cm at 20 C
Electrical Conductivity8 %IACS at 68 F0.0746 MegaSiemens/cm at 20 C
Thermal Conductivity20.5 Btu . ft/(hr .ft2. oF)at 68F35.5 W/m ·°K at 20 C
Coefficient of Thermal Expansion12.0·10-6 per °F (68-572 F)21.6·10-6 per °C (20-300 C)
Specific Heat Capacity0.09 Btu/lb/°F at 68 F377.1J/kg · °K at 20 C
Modulus of Elasticity in Tension15500 ksi107000 MPa

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