Aluminum & Copper Alloys for Casting, Forging and Machining

Aluminum, Copper, Brass and Bronze for Engineered Components

Aluminum and copper alloys are selected for combinations of low density, strength, thermal conductivity, electrical conductivity, corrosion resistance, castability, formability, and machinability. ForceBeyond supports nonferrous components across die casting, sand casting, forging, precision machining, heat treatment, finishing, inspection, and assembly.

This page serves as the material-family guide for A356, A380, 6061, 7075, copper, brass, bronze, and application-specific nonferrous grades. Final material and process selection should be tied to the product form, service temperature, loading, conductivity, corrosion environment, joining method, inspection, and governing specification.

Aluminum and Copper Alloy Families

Published mechanical, thermal, and electrical values vary by chemistry, product form, heat treatment, temper, section size, and test method. The following table is intended for initial material selection rather than final design allowables.

Review the broader materials and technical specifications hub for cross-family alloy selection and manufacturing compatibility.

Comparing A356, A380, 6061 and Copper Alloys

Selecting a Nonferrous Manufacturing Route

The best process depends on geometry, volume, alloy, product form, tooling budget, mechanical requirements, conductivity, and inspection.

• Aluminum die casting: high-volume, complex, thin-wall, near-net components with repeatable geometry.
• A356 casting: heat-treatable cast components requiring strength, pressure integrity, or larger geometry.
• Sand casting: larger, lower-volume, or complex components with flexible tooling and alloy options.
• Aluminum or copper forging: components requiring grain flow, fatigue resistance, strength, conductivity, or pressure performance.
• Billet and wrought-part machining: prototypes, low volume, precise fluid passages, cold plates, busbars, and structural parts.

Aluminum Heat Treatment and Temper Control

Heat treatment affects strength, hardness, ductility, residual stress, distortion, conductivity, and dimensional stability.

• Solution heat treatment: dissolves strengthening constituents in heat-treatable aluminum alloys.
• Quenching: retains a supersaturated structure but can introduce residual stress and distortion.
• Artificial aging: develops precipitation strengthening in T5, T6, or other specified tempers.
• Stress relief: stretching, compression, thermal processing, or machining sequence may be used to control distortion.
• Verification: hardness, conductivity, tensile testing, dimensional inspection, or other checks may be required by specification.

Electrical and Thermal Conductivity Considerations

Conductivity depends on alloy chemistry, temper, purity, cold work, heat treatment, joining, plating, surface condition, and test method.

• Copper purity: higher-purity grades generally support higher electrical and thermal conductivity.
• Alloying tradeoffs: brass, bronze, and precipitation-strengthened copper alloys sacrifice some conductivity for strength, wear, or corrosion performance.
• Joint design: contact area, flatness, surface finish, fastener load, plating, and oxidation influence electrical resistance.
• Thermal interfaces: flatness, roughness, thermal interface material, clamping, and wall thickness affect heat transfer.
• Verification: conductivity, resistance, temperature rise, or thermal testing may be specified for critical applications.

Pressure Tightness, Porosity and Leak Testing

Pressure-containing aluminum and copper-alloy components require coordinated design, casting, machining, cleaning, and testing.

• Gating and feeding: control fill, shrinkage, entrained gas, oxide films, and local hot spots.
• Machining allowance: avoid opening internal porosity near sealing surfaces and ports.
• Impregnation or sealing: may be considered where allowed by the specification and application.
• Leak-test method: pressure decay, bubble, helium, hydrostatic, pneumatic, or other methods selected according to required sensitivity.
• Acceptance criteria: test pressure, medium, dwell time, allowable leak rate, and reporting should be defined before production.

Machining Aluminum, Copper, Brass and Bronze

• Aluminum: manage chip evacuation, built-up edge, thin-wall distortion, burrs, and surface finish.
• Copper: control gummy chip formation, burrs, heat, tool adhesion, and distortion on soft or high-conductivity grades.
• Brass: machinability varies widely with alloy composition, lead content, and regulatory requirements.
• Bronze: tool selection depends on tin, aluminum, silicon, bearing, or other bronze family.
• Multi-axis machining: reduce setups and improve access on manifolds, cold plates, housings, busbars, and complex fluid components.

Surface Finishing and Corrosion Protection

• Anodizing: used on suitable aluminum alloys for corrosion protection, wear, color, or electrical insulation.
• Conversion coating: supports corrosion protection, paint adhesion, or electrical grounding requirements.
• Plating: tin, nickel, silver, or other systems may be used on copper alloys for solderability, corrosion, contact resistance, or wear.
• Passivation and cleaning: remove contamination and prepare copper, brass, or bronze surfaces for service.
• Galvanic design: account for dissimilar metals, fasteners, moisture, coating damage, and drainage.

Material Verification, Testing and Documentation

• Material documentation: mill or material test reports, heat or lot traceability, temper, and certificates of conformity.
• Chemistry and conductivity: XRF, OES, IACS conductivity, resistance, hardness, or project-specific verification.
• Mechanical testing: tensile, yield, elongation, hardness, bend, fatigue, or other project-specific tests.
• Non-destructive testing: penetrant, radiographic, ultrasonic, or conductivity-based inspection where applicable.
• Dimensional inspection: CMM, gauges, optical systems, surface-finish checks, and first-article reporting.
• Leak and pressure testing: project-specific hydrostatic, pneumatic, pressure-decay, or helium methods.

Review our testing and inspection capabilities and quality assurance and certifications for additional information.

Aluminum and Copper Alloy Applications by Industry

• Data center power: busbars, lugs, liquid-cooling manifolds, cold plates, enclosures, and thermal-management hardware.
• Automotive and electric vehicles: housings, brackets, structural castings, battery components, connectors, heat sinks, and power-distribution hardware.
• HVAC and fluid control: valve bodies, manifolds, pump housings, fittings, heat exchangers, and refrigeration components.
• Energy and power generation: electrical connectors, grounding hardware, heat-transfer components, busbars, and equipment housings.
• Aerospace: lightweight brackets, housings, cold plates, structural components, heat sinks, and electrical hardware.
• Industrial electrical equipment: transformer lugs, terminals, switchgear components, electrodes, conductive contacts, and machined copper hardware.