AMPCO® 18 Sand Castings: High-Strength, Durable, Recycled Aluminum Alloy
The exceptional wear and fatigue resistance of this alloy results from a controlled duplex alpha and beta phase. This alloy has high strength combined with good ductility and unusual toughness. The physical characteristics of this alloy can be varied by heat treatments (AMPCO® 18.22, 18.23 and 18.136).
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 7.45 g/cm³ |
Recycled Content | 80 % |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy | 23.0 °C | 13.5 J | |
Compressive strength | 23.0 °C | 938 MPa | |
Elastic modulus | 23.0 °C | 110 GPa | |
Elongation A5 | 23.0 °C | 14 % | |
Fatigue strength | 23.0 °C | 221 MPa | 100.000.000 cycles |
Hardness, HBW | 23.0 °C | 179 [-] | HBW 10/3000 |
Hardness, Rockwell B | 23.0 °C | 89 [-] | |
Izod impact energy | 23.0 °C | 20.3 J | |
Proportional limit in compression | 23.0 °C | 207 MPa | |
Reduction of area | 23.0 °C | 12 % | |
Shear strength | 23.0 °C | 400 MPa | |
Tensile strength | 23.0 °C | 620 MPa | |
Yield strength Rp0.5 | 23.0 °C | 269 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.62E-5 1/K |
Specific heat capacity | 23.0 °C | 420 J/(kg·K) |
Thermal conductivity | 23.0 °C | 63 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 23.0 °C | 8.00E+6 S/m |
Specific Electrical conductivity | 14 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 10.5 % |
Copper | Balance |
Iron | 3.5 % |
Other | 0.5 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | This alloy is well suited for use as gears, worm wheels, bushings and bearings. The machine tool industry has adopted AMPCO® 18 as standard for all applications requiring good sliding properties, wear resistance, fatigue resistance, toughness and/or resistance to deformation under load. AMPCO® 18 is used in steel mill service as screw down nuts, slippers (many of which are "cast to size"), gears, wedges and breaker blocks. AMPCO® 18 has an excellent corrosion resistance and is used in pickling service for such parts as hooks, crates and spreaders, etc. | |
Metal
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- AMPCO® 21 Centrifugal Castings – Premium Wear-Resistant Alloy
- AMPCO® 21: High-Performance Sand Castings with Superior Wear Resistance
- AMPCO® 22 Sand-Cast Duplex Alloy: Superior Hardness & Wear Resistance
- AMPCO® 18 Castings – High Strength, Durability, & Recyclability
- AMPCO® 18 Forgings: High-Strength, Durable Alloy for Critical Applications
- AMPCO® 18.23: Premium Heat‑Treated Sand Castings for Superior Strength and Wear Resistance
- AMPCO® M4: High‑Performance Sand‑Cast Alloys with Superior Mechanical Properties