Molybdenum-copper composites (AMC) offer high thermal conductivity, low thermal expansion, and excellent heat dissipation.

Molybdenum-Copper Composites

Our molybdenum-copper composites (AMC) combine the unique properties of molybdenum with the high thermal conductivity of copper, resulting in a powerful metal matrix composite for thermal management.

Molybdenum provides a very high melting point, low thermal expansion, and notable thermal conductivity, while copper’s exceptional heat transfer efficiency makes it ideal for dissipating heat.

Molybdenum-Copper Advantages

With a unique blend of mechanical and chemical properties, molybdenum-copper offers exceptional benefits for thermal management applications, including:

High Thermal Conductivity:
Our advanced powder metallurgy composites deliver superior through-thickness thermal conductivity, outperforming competitive materials.

High Ductility:
Excellent ductility allows precise machining into complex shapes without compromising strength, making AMC ideal for intricate heat dissipation components. Our composites are also readily plateable.

Excellent dimensional stability:
With its excellent dimensional stability and corrosion resistance, our material ensures long product service life.

Customized Thermal Expansion:
AMC materials are available in standard compositions, but we also offer custom-engineered formulations to meet specific thermal expansion requirements.

Molybdenum-Copper Applications

Due to its high thermal conductivity and low thermal expansion, molybdenum-copper (AMC) is used for a variety of semiconductor and electronic applications including:

Download Our TMP Brochure
MOLYBDENUM-COPPER COMPOSITIONS
AMC 6040 60% Molybdenum-40% Copper
AMC 6535
65% Molybdenum-35% Copper
AMC 7525
75% Molybdenum-25% Copper
AMC 8020 80% Molybdenum-20% Copper
AMC 8515 85% Molybdenum-15% Copper
MOLYBDENUM-COPPER DENSITY

g/cm3 lb./in.3
AMC 6040 9.68 0.349
AMC 6535 9.74
0.352
AMC 7525 9.87
0.356
AMC 8020
9.94
0.359
AMC 8515
10.01
0.361
MOLYBDENUM-COPPER THERMAL CONDUCTIVITY

W/mK BTU/hr.ft.°F
AMC 6040 215 125
AMC 6535 205
119
AMC 7525 185
108
AMC 8020
175
102
AMC 8515
165
96
MOLYBDENUM-COPPER THERMAL EXPANSION (in./in. x10 -6/°C)

30-150° C 30-400° C 30-800° C
AMC 6040 9.5 10.2 10.5
AMC 6535 9.0
9.4
9.8
AMC 7525 7.8
8.0 8.4
AMC 8020
7.2
7.5 7.9
AMC 8515
6.8
7.0 7.4

Molybdenum-Copper Packaging

We provide a range of packaging services designed to protect, secure, and preserve the quality of our products.
  • Waffle pack based on custom size of part
  • Reel and tape packaging for production line efficiencies
  • Glass Vial or custom solution

Mismatch in expansion between materials can create mechanical stress during thermal cycling. Thermal management materials are engineered to match the CTE of semiconductors, ensuring structural integrity and long-term stability.

Unlike pure metals, composites combine:

  • Copper for heat transfer
  • Molybdenum or tungsten for structural stability and low expansion

This combination allows both efficient cooling and dimensional stability, which traditional materials cannot achieve simultaneously. 

  • Molybdenum-copper: lighter, easier to machine, balanced performance
  • Tungsten-copper: higher temperature resistance, stronger but heavier

Selection depends on the application’s thermal load, weight constraints, and durability requirements

Contact an Expert

Download button Downloads