AMPCOLOY® 944 Extruded Alloy: High Thermal Conductivity & Strength without Beryllium Hazards

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	7 J
Compressive yield strength, 0.1%	23.0 °C	710 MPa
Elastic modulus	23.0 °C	151 GPa
Elongation A5	23.0 °C	5 %
Hardness, HBW	23.0 °C	294 [-]	HBW 10/3000
Hardness, Rockwell C	23.0 °C	31 [-]
Tensile strength	23.0 °C	938 MPa
Yield strength Rp0.5	23.0 °C	730 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	30 % 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.

Pure Tungsten (W): High-Temperature Metal for Industrial Applications AMPCOLOY® 944 Forgings – Superior Thermal Conductivity & Strength, Safe Alternative to Beryllium Copper

Metal