AMPCOLOY® 940 Forgings – Advanced Beryllium‑Free Alloy for High‑Performance Applications
AMPCOLOY® 940 is a patented alloy which meets the demands of users of the RWMA class 3 alloys without beryllium. In the industrialized countries, stricter health and safety instructions on the use of noxious elements have forced AMPCO METAL to develop this new alloy. It replaces the AMPCOLOY® 95 in practically all applications.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 23.0 °C | 8.71 g/cm³ |
Recycled Content | 80 % |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Compressive yield strength, 0.1% | 23.0 °C | 552 MPa | |
Elastic modulus | 23.0 °C | 131 GPa | |
Elongation A5 | 23.0 °C | 11 % | |
Hardness, HBW | 23.0 °C | 210 [-] | HBW 10/3000 |
Hardness, Rockwell B | 23.0 °C | 95 [-] | |
Reduction of area | 23.0 °C | 20 % | |
Tensile strength | 23.0 °C | 648 MPa | |
Yield strength Rp0.5 | 23.0 °C | 496 MPa |
Thermal
| Property | Temperature | Value |
|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.75E-5 1/K |
Specific heat capacity | 23.0 °C | 380 J/(kg·K) |
Thermal conductivity | 23.0 °C | 208 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 23.0 °C | 2.80E+7 S/m |
Specific Electrical conductivity | 48 % IACS |
Chemical properties
| Property | Value |
|---|---|
Chromium | 0.4 % |
Copper | Balance |
Nickel | 2.5 % |
Silicon | 0.7 % |
Technological properties
| Property | ||
|---|---|---|
| Application areas | AMPCOLOY® 940 is used wherever a good electrical or thermal conductivity is required together with high mechanical properties: 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 machines and moulds for low pressure die casting machines, Parts of moulds for injection moulding of plastics, injection-nozzles and cooling pins, Chill moulds for casting brass and certain bronzes, Brake drums for paper winding rolls, Warm pressed parts for energy engineering. | |
Metal
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- AMPCOLOY® 83 Beryllium Copper Forgings – Superior Strength & Conductivity
- AMPCOLOY® 940: Safe, High-Performance Sand-Casting Alloy
- AMPCOLOY® 972 Forgings: High-Performance Cu-Bearing Alloy
- AMPCO® 21 Forgings – Premium Wear-Resistant Aluminum‑Iron Alloy
- AMPCOLOY® 940 Extrusions – Premium Be‑Free Alloy for High‑Performance Applications