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
C-86300
Chemical Composition
(%max, unless shown as range or min)
| Cu | Al | Fe | Mn | Ni | Pb | Sn | Zn |
| Min/Max | 60-66 | 5.0-7.5 | 2.0-4.0 | 2.5-5.0 | 1.0 | 0.2 | 0.2 | 22.0-28.0 |
Note: Cu + Sum of Named Elements, 99.5% min.
Applicable Specifications
* ASTM B505
Fabrication Processes
* Continuous Casting
Fabrication Properties
| Joining Technique | Suitability |
| Soldering | Poor |
| Brazing | Poor |
| Oxyacetylene Welding | Poor |
| Gas Shielded Arc Welding | Poor |
| Coated Metal Arc Welding | Good |
| Machinability Rating | 80 |
Mechanical Properties (ASTM B505)
| Tensile Strength, minA | Yield Strength, at 0.5%
Extension Under Load, minA | Elongation in 2 in.
or 50 mm, min, % |
| ksi | MPa | ksi | MPa |
| 110 | 758 | 62 | 427 | 14 |
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 Customary | Metric |
| Melting Point – Liquidus | 1693 F | 923 C |
| Melting Point – Solidus | 1625 F | 885C |
| Density | 0.283 lb/in3 at 68 F | 7.46 gm/cm3 at 20 C |
| Specific Gravity | 7.83 | 7.83 |
| Electrical Resistivity | 130.8 ohms-cmil/ft at 68 F | 21.74 microhm-cm at 20 C |
| Electrical Conductivity | 8 %IACS at 68 F | 0.0746 MegaSiemens/cm at 20 C |
| Thermal Conductivity | 20.5 Btu . ft/(hr .ft2. oF)at 68F | 35.5 W/m ·°K at 20 C |
| Coefficient of Thermal Expansion | 12.0·10-6 per °F (68-572 F) | 21.6·10-6 per °C (20-300 C) |
| Specific Heat Capacity | 0.09 Btu/lb/°F at 68 F | 377.1J/kg · °K at 20 C |
| Modulus of Elasticity in Tension | 15500 ksi | 107000 MPa |
* TQ 50 Temper, Field Strength 16 kA/m
** As Cast, Field Strength 16 kA/m
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