MOLYBDENUM–COPPER COMPOSITES & THERMAL MANAGEMENT
MoCu Molybdenum–Copper — Technical Sourcing
Composition-controlled sourcing for MoCu sheet, blanks, heat spreaders, contacts and components to drawing.
MNK-G.S.A sources molybdenum–copper composite material by explicit Mo/Cu ratio, production route, product form, physical-property requirements, dimensions, inspection documents and destination.
MoCu Composition Is Part of the Product Definition
MoCu is a family of composite materials rather than one universal alloy grade. Specialist manufacturers publish different molybdenum-to-copper ratios to tune thermal expansion, thermal conductivity, density, strength and processability. The required composition and properties must therefore be written into the inquiry.
Material Definition and Supply Scope
MoCu 65/35
A manufacturer-published family with nominal 65% molybdenum and 35% copper. Suitability is confirmed against the required thermal, electrical and mechanical properties.
MoCu 70/30
A common manufacturer-published composition with nominal 70% molybdenum and 30% copper, used in selected thermal-management and electrical applications.
MoCu 80/20
A higher-molybdenum composition published by specialist producers. Lower copper content changes expansion, conductivity and fabrication behavior.
Rolled Sheet and Blanks
Thin sheet, cut blanks and heat-spreader formats sourced by composition, thickness, flatness, width, length, surface and plating requirements.
Infiltrated Components
Copper-infiltrated porous molybdenum parts and semi-finished products sourced by drawing and defined physical-property requirements.
Cu/Mo/Cu Laminates
Copper-clad molybdenum laminates are a separate layered material family. They are not treated as equivalent to homogeneous or infiltrated MoCu composites.
Typical Global Sourcing Range
The ranges below represent typical global sourcing and manufacturing capability across specialist sources. They are not MNK stock and do not describe one universal factory envelope.
| Product Form | Typical Global Sourcing Range | Notes |
|---|---|---|
| Rod | Approximately Ø3–100 mm | Typical length to approximately 500 mm. |
| Foil | From approximately 0.08 mm | Composition, temper and width are confirmed together. |
| Thin Flat Products | Approximately 0.08–0.7 mm thickness | Typical specialist width below 120 mm and length below 300 mm. |
| Plate / Block | According to specification | Composition, physical-property requirements and complete dimensions govern feasibility. |
| Custom Parts | According to drawing | Flatness, finish, plating and inspection are agreed before production. |
Use explicit composition wording such as 80Mo-20Cu or Mo 80 wt.% / Cu 20 wt.%.
Actual availability depends on grade, specification, quantity, tolerances, certification requirements and manufacturing source. Diameter, thickness, width and length must be confirmed as one complete combination.
Standards and Documentation
Manufacturer Specifications
Published specialist datasheets define MoCu compositions such as 65/35, 70/30 and 80/20 together with typical physical properties. The chosen datasheet is part of the technical review.
No Universal ASTM Grade
A commercial MoCu designation is not presented as an ASTM grade unless a specific applicable document is stated and its product-form scope is confirmed.
Customer Property Limits
Thermal conductivity, coefficient of thermal expansion, electrical conductivity, density, hardness and strength are specified where relevant to the application.
EN 10204:2004
Inspection-document type may be requested under the European framework. Available chemistry, physical-property and dimensional results are agreed with the selected manufacturer.
EN / DIN Requirements
No generic EN or DIN equivalent is assumed for MoCu commercial compositions. A requested European document is checked by number, edition and technical scope.
Drawing and Inspection
For finished thermal-management components, the drawing, flatness, finish, plating, dimensional report and traceability requirements govern the quotation.
Reference Physical and Mechanical Properties
Reference Basis
The values below summarize a published specialist datasheet for infiltrated MoCu 65/35, 70/30 and 80/20 composites. They are reference data, not universal acceptance limits.
Density
Published reference density increases from about 9.72 ± 0.04 g/cm³ for 65Mo-35Cu to about 9.92 ± 0.05 g/cm³ for 80Mo-20Cu.
Thermal Expansion
Published mean CTE at 20–100 °C ranges from about 8.6 × 10⁻⁶/K for 65/35 to about 6.3 × 10⁻⁶/K for 80/20. Composition and temperature interval must be stated.
Thermal Conductivity
The same datasheet lists minimum thermal conductivity from approximately 170 to 200 W/(m·K), depending on Mo/Cu ratio.
Electrical and Mechanical
Published electrical conductivity is at least about 35–47% IACS, hardness about 120–175 HB and nominal Young’s modulus about 200–220 GPa across the listed compositions.
Certificate Control
Actual composition, density, thermal properties, electrical conductivity, hardness and strength depend on the selected grade, production route and product form and must be confirmed on the approved datasheet or certificate.
Application Context
Thermal Management
Heat spreaders, heat sinks and base plates for power electronics and semiconductor packaging where expansion matching and heat transfer must be balanced.
Electrical Components
Selected contact and electrode applications developed around composition, conductivity, erosion behavior and geometry.
Custom Packaging Parts
Plated, machined, stamped or EDM-cut components supplied to drawing after confirming material architecture and inspection.
Capability Note
Published dimensional ranges describe demonstrated manufacturing capability across specialist sources, not guaranteed stock and not one universal mill envelope. Diameter, thickness, width, length, condition, tolerance and quantity must be confirmed as one complete combination for each inquiry.
Send Your MoCu Molybdenum–Copper Inquiry
Provide the material grade or composition, governing specification, product form, complete dimensions, quantity, inspection-document requirements and delivery destination.