C624 Aluminum Bronze A-3
Nominal Chemical
Composition
INTRODUCTION
Aufhauser Aluminum Bronze A-3 contains a higher iron content than the C618 (Aluminum Bronze A-2). The higher iron content gives "A-3" greater strength, while maintaining good ductility.
APPLICATIONS
- Overlaying pistons and depositing bearing surface applications.
- Joining Aluminum Bronze castings of similar composition.
GENERAL INFORMATION
Chemical Composition| Copper | Aluminum | Iron | Manganese | Silicon | Tin |
|---|---|---|---|---|---|
| Remainder | 10.0 - 11.5 | 2.0 - 4.5 | 0.30* | 0.25* | 0.20* |
* Max (Other)
Note: Copper contains Silver
ADDITIONAL INFORMATION
Copper and its alloys require a relatively high heat input with shortened welding time. Higher preheat temperatures and faster welding rates than for steel are necessary.
PHYSICAL and MECHANICAL PROPERTIES
| Melting Point - Liquidus | 1900°F (1038°C) |
| Solidus | 1880°F (1027°C) |
| Density at 68°F | 0.269 lb/in³ |
| Electrical Conductivity at 68°F | 12.0 %IACS |
| Thermal Conductivity at 68°F | 34.0 Btu/ft²/ft hr/°F |
| Electrical Resistivity at 68°F | 86.4 Ω-cmil/ft |
| Specific Gravity | 7.45 |
| Coefficient of Thermal Expansion | 9.0 10-6 / °F (68 - 572°F) |
| Specific Heat Capacity at 68°F | 0.09 Btu/lb/°F |
| Tensile Strength | 90,000 psi |
| Yield Strength | 40,000 psi |
| Elongation in 2" | 20% |
| Brinell Hardness (3000 kgf) | 155-175 |
| Modulus of Elasticity, Tension | 17000 ksi |
| Modulus of Rigidity | 6400 ksi |
| Hardness will vary depending on weld quality and welder expertise. |
SPECIFICATIONS MEET OR EXCEED
| AWS A5.7 Class ERCuAl-A3 |
| UNS C62400 |
STANDARD SIZES AND DIAMETERS
| Size | Cast (12" Spool) |
Helix (12" Spool) |
|---|---|---|
| 3/32 or 1/8 x 36" rod | N/A | N/A |
| 0.035" dia. x 30 lb. spl | 15-40" | < 1" |
| 0.045" dia. x 30 lb. spl | 15-40" | < 1" |
| 0.062" dia. x 30 lb. spl | 15-40" | < 1" |
TYPICAL USES FOR ALLOY C624
| Product Category | Product | Reason Category | Reason |
|---|---|---|---|
| Fasteners | Nuts | Corrosion Resistance | Corrosion Resistance |
| Nuts | Corrosion Resistance | Corrosion Resistance to Chemicals | |
| Nuts | Corrosion Resistance | Corrosion Resistance to Fresh Water | |
| Nuts | Corrosion Resistance | Corrosion Resistance to Non Oxidizing Acids | |
| Nuts | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Nuts | Corrosion Resistance | Corrosion Resistance to Salt Water | |
| Nuts | Mechanical Properties | High Strength | |
| Industrial | Bushings | Corrosion Resistance | Corrosion Resistance |
| Bushings | Corrosion Resistance | Corrosion Resistance to Chemicals | |
| Bushings | Corrosion Resistance | Corrosion Resistance to Fresh Water | |
| Bushings | Corrosion Resistance | Corrosion Resistance to Non Oxidizing Acids | |
| Bushings | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Bushings | Corrosion Resistance | Corrosion Resistance to Salt Water | |
| Bushings | Friction & Wear Properties | Wear Resistance | |
| Bushings | Mechanical Properties | High Strength | |
| Cams | Corrosion Resistance | Corrosion Resistance | |
| Cams | Corrosion Resistance | Corrosion Resistance to Chemicals | |
| Cams | Corrosion Resistance | Corrosion Resistance to Fresh Water | |
| Cams | Corrosion Resistance | Corrosion Resistance to Non Oxidizing Acids | |
| Cams | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Cams | Corrosion Resistance | Corrosion Resistance to Salt Water | |
| Cams | Friction & Wear Properties | Wear Resistance | |
| Cams | Mechanical Properties | High Strength | |
| Drift Pins | Corrosion Resistance | Corrosion Resistance | |
| Drift Pins | Corrosion Resistance | Corrosion Resistance to Chemicals | |
| Drift Pins | Corrosion Resistance | Corrosion Resistance to Fresh Water | |
| Drift Pins | Corrosion Resistance | Corrosion Resistance to Non Oxidizing Acids | |
| Drift Pins | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Drift Pins | Corrosion Resistance | Corrosion Resistance to Salt Water | |
| Drift Pins | Impact Resistance | Impact Resistant | |
| Drift Pins | Mechanical Properties | High Strength | |
| Gears | Corrosion Resistance | Corrosion Resistance | |
| Gears | Corrosion Resistance | Corrosion Resistance to Chemicals | |
| Gears | Corrosion Resistance | Corrosion Resistance to Fresh Water | |
| Gears | Corrosion Resistance | Corrosion Resistance to Non Oxidizing Acids | |
| Gears | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Gears | Corrosion Resistance | Corrosion Resistance to Salt Water | |
| Gears | Friction & Wear Properties | Wear Resistance | |
| Gears | Mechanical Properties | High Strength | |
| Hydraulic Bushings | Corrosion Resistance | Corrosion Resistance | |
| Hydraulic Bushings | Friction & Wear Properties | Resistant to Abrasive Wear | |
| Hydraulic Bushings | Impact Resistance | Impact Resistant | |
| Hydraulic Bushings | Mechanical Properties | High Strength | |
| Support Bushings | Friction & Wear Properties | Galling Resistance | |
| Support Bushings | Mechanical Properties | High Strength | |
| Tie Rods | Corrosion Resistance | Corrosion Resistance | |
| Tie Rods | Corrosion Resistance | Corrosion Resistance to Chemicals | |
| Tie Rods | Corrosion Resistance | Corrosion Resistance to Fresh Water | |
| Tie Rods | Corrosion Resistance | Corrosion Resistance to Non Oxidizing Acids | |
| Tie Rods | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Tie Rods | Corrosion Resistance | Corrosion Resistance to Salt Water | |
| Tie Rods | Mechanical Properties | High Strength | |
| Valve Balls | Corrosion Resistance | Cavitation Corrosion Resistance | |
| Valve Balls | Corrosion Resistance | Erosion Corrosion Resistance | |
| Valve Balls | Corrosion Resistance | Pitting Corrosion Resistance | |
| Valve Balls | Corrosion Resistance | Resistance to Corrosion by a broad variety of Corrosive Media | |
| Valve Balls | Finishing Characteristics | Retains Surface Finish | |
| Valve Balls | Friction & Wear Properties | Wear Resistance | |
| Wear Plates | Corrosion Resistance | Corrosion Resistance | |
| Wear Plates | Corrosion Resistance | Corrosion Resistance to Numerous Environments | |
| Wear Plates | Friction & Wear Properties | Galling Resistance | |
| Wear Plates | Friction & Wear Properties | Wear Resistance | |
| Wear Plates | Mechanical Properties | High Strength | |
| Welding Wire | Conductivity (Electrical) | Electrical Conductivity | |
| Welding Wire | Conductivity (Thermal) | Thermal Conductivity | |
| Welding Wire | Corrosion Resistance | Oxidation Resistance | |
| Welding Wire | Softening Resistance | Resistance to Thermal Softening |