AMPCOLOY® 944 Forgings – Superior Thermal Conductivity & Strength, Safe Alternative to Beryllium Copper
AMPCOLOY® 944 has been developed by AMPCO METAL to obtain an alloy with ultimate thermal conductivity, good tensile strength and very good hardness, in order to provide an alternative to beryllium copper, where stricter health and safety instructions on the use of noxious elements are required.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.69 g/cm³ |
Recycled Content | 80 % |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Charpy impact energy | 23.0 °C | 8 J | |
Compressive yield strength, 0.1% | 23.0 °C | 700 MPa | |
Elastic modulus | 23.0 °C | 135 GPa | |
Elongation A5 | 23.0 °C | 4 % | |
Hardness, HBW | 23.0 °C | 270 [-] | HBW 10/3000 |
Hardness, Rockwell C | 23.0 °C | 28 [-] | |
Tensile strength | 23.0 °C | 793 MPa | |
Yield strength Rp0.5 | 23.0 °C | 655 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.75E-5 1/K |
Thermal conductivity | 23.0 °C | 156 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Specific Electrical conductivity | 35 % IACS |
Chemical properties
| Property | Value |
|---|---|
Chromium | 0.9 % |
Copper | Balance |
Nickel | 7 % |
Other | 0.5 % |
Silicon | 2 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | AMPCOLOY® 944 is used wherever a good electrical or thermal conductivity is required together with high mechanical properties and wherever Beryllium copper is used: Electrode holders and seam welding shafts, Spot welding electrodes, seam welding discs, projection and butt welding dies, principally for stainless steel and Monel, Plunger tips for cold chamber aluminium high pressure die casting, Parts of moulds for injection moulding of plastics, injection-nozzles and cooling pins, Chill moulds for casting brass and certain bronzes. | |
Metal
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- AMPCOLOY® 944 Extruded Alloy: High Thermal Conductivity & Strength without Beryllium Hazards
- AMPCO® 22 Forgings – Duplex Alloy with Exceptional Hardness, Compression & Wear Resistance
- AMPCOLOY® 83 Extrusions – High-Performance Beryllium Copper Alloy
- AMPCOLOY® 83 Beryllium Copper Forgings – Superior Strength & Conductivity
- AMPCOLOY® 83 Sand Castings – High-Performance Beryllium Copper Alloy
- AMPCOLOY® 972 Forgings: High-Performance Cu-Bearing Alloy
- AMPCO® 21 Forgings – Premium Wear-Resistant Aluminum‑Iron Alloy
- AMPCOLOY® 940 Forgings – Advanced Beryllium‑Free Alloy for High‑Performance Applications