Ampco Metal AMPCOLOY® 940 Nickel-Copper, Extrusion, 25

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Ampco Metal AMPCOLOY® 940 Nickel-Copper, Extrusion, 25 - 50 mm.
Categories:	Metal; Nonferrous Metal; Copper Alloy
Material Notes:	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 to develop this new alloy. It replaces the AMPCOLOY 95 in practically all applications. Applications: 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 aluminum die casting machines; Parts of moulds for injection moulding of plastics, injection-nozzles and cooling pins; Brake drums for paper winding rolls; Parts for energy engineering
Key Words:	RWMA Class 3
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Physical Properties	Original Value	Comments

Density	8.71 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	210	HB 30
Hardness, Rockwell B	95
Tensile Strength, Ultimate	669 MPa
Tensile Strength, Yield	517 MPa @Strain 0.5 %
Elongation at Break	13 %
Reduction of Area	20 %
Modulus of Elasticity	131 GPa
Compressive Yield Strength	552 MPa	0.1% Perm. Set

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000357 ohm-cm	48% I.A.C.S.

Thermal Properties	Original Value	Comments
CTE, linear	17.5 µm/m-°C @Temperature 20.0 °C
Specific Heat Capacity	0.380 J/g-°C
Thermal Conductivity	208 W/m-K

Component Elements Properties	Original Value	Comments
Chromium, Cr	<= 0.40 %
Copper, Cu	96.4 - 96.8 %	As Balance
Nickel, Ni	2.5 %
Silicon, Si	0.70 %

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NAMPCO41 / 14995

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