Metal Materials
BatchMach Precision provides copper CNC machining services for precision components requiring reliable electrical conductivity, thermal performance, and dimensional accuracy. Our custom copper machining capabilities support prototypes, low-volume orders, and repeat production for components such as electrical contacts, heat-transfer parts, busbars, housings, and precision mechanical parts.
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19+
Years of Experience
250+
Machines & Testing Equipment
11,000 m²
Manufacturing Area
200+
Skilled Staff
ISO
9001 / 13485 / AS9100D
With years of experience in batch production and precision inspection of complex parts, we manufacture and inspect components to drawing requirements, covering critical dimensions, geometric tolerances, and material specifications. We provide complete measurement reports and material certificates to ensure delivered parts meet the specified requirements.
BatchMach Precision combines CNC turning, milling, and 5-axis machining to produce copper parts with different geometries and feature requirements. Each process is selected based on part shape, tolerance, surface requirements, and machining efficiency, allowing us to handle everything from simple turned components to complex multi-face copper parts.
Our copper milling capabilities are used for parts with pockets, slots, hole patterns, mounting features, and complex profiles. We machine custom copper parts such as busbars, heat-transfer components, electrical housings, and mounting plates with controlled dimensions, clean edges, and consistent surface quality.
Our copper turning capabilities are suitable for Copper Components with rotational features such as bushings, sleeves, terminals, fittings, and threaded connectors. We machine precise diameters, bores, grooves, threads, and mating surfaces while controlling burrs and surface finish.
5-axis machining is suitable for complex Copper Parts with multiple faces, angled features, deep cavities, and compound geometries. Fewer setups help maintain positional relationships between critical features and improve machining consistency.
Precision machining of Copper Parts requires careful control of tooling, cutting parameters, and workholding to reduce burrs, surface marks, and deformation. We focus on critical dimensions, mating features, and surface quality throughout the machining process.
Copper C101 is an oxygen-free copper known for its high electrical and thermal conductivity. Commonly supplied in sheet, plate, bar, and tubing, it is well suited to precision parts requiring efficient current transfer, heat dissipation, or tightly controlled oxygen content. C101 is widely used for electrical contacts, busbars, heat-transfer components, semiconductor equipment parts, and vacuum-system components.
Approx.
≈ 70
Yield Strength (MPa)
101–102
Electrical Conductivity (% IACS)
Fair
Machinability
Approx.
≈ 45
Hardness (Brinell)
8.94
Density (g/cm³)
Material properties are typical values and may vary with temper, heat treatment, product form, applicable specification, and test method.
Surface finishing for machined copper parts is selected according to conductivity, corrosion resistance, solderability, wear, and appearance requirements. Common options include polishing, brushing, bead blasting, nickel plating, tin plating, silver plating, and gold plating. Critical contact surfaces, threads, and mating features can be masked when required to maintain dimensional fit and electrical performance after finishing.
Suitable for copper parts that do not require additional cosmetic finishing. It preserves the material’s electrical and thermal performance while reducing secondary processing cost and lead time. Common for functional parts, heat-transfer components, and internal assemblies.
Improves surface smoothness and reduces visible machining marks. Suitable for cosmetic parts, sealing surfaces, and copper components with higher surface-finish requirements. Polishing allowance should be controlled on dimension-critical features.
Creates a uniform directional texture and helps minimize the appearance of light machining marks. Commonly used for visible copper panels, covers, housings, and decorative components.
Produces a uniform matte finish for parts requiring a consistent appearance. Precision holes, threads, mating surfaces, and electrical contact areas can be masked to avoid affecting fit or function.
Used to improve corrosion resistance, wear resistance, and oxidation protection. Common for connectors, housings, and mechanical copper components. Plating thickness should be specified because it can affect threads, press fits, and other critical dimensions.
Suitable for electrical copper parts requiring good solderability and oxidation protection. Common applications include terminals, busbars, and connectors. Specify plating thickness, coverage area, and any masking requirements when requesting a quote.
Used where high conductivity and low contact resistance are important, such as high-current busbars, contacts, and power connectors. Functional contact areas and plating coverage should be clearly defined on the drawing.
Suitable for high-reliability copper parts requiring stable contact performance and strong oxidation resistance, such as precision connectors and electronic contacts. Selective gold plating is commonly used to control cost while protecting critical contact areas.
BatchMach Precision owns two ISO-certified CNC machining factories equipped for milling, turning, multi-axis machining, and precision inspection. With production handled in-house, we maintain direct control over machining quality, lead times, and consistency for copper parts from prototypes to repeat production.
Copper is widely used in electrical, power, automotive, semiconductor, aerospace, and industrial applications because of its excellent electrical conductivity, thermal performance, contact reliability, and corrosion resistance. Different copper grades can be selected according to conductivity, strength, wear resistance, and machinability requirements.
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Copper is a primary material for electrical components because of its high conductivity and reliable current-carrying performance. CNC machining is used to produce precise copper components with controlled contact surfaces, hole positions, threads, and assembly features.
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Power distribution equipment requires copper parts capable of carrying high electrical loads while maintaining reliable connections. Materials such as C101 and C110 are commonly used for busbars, terminals, conductive blocks, and power connection components.
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Electric and hybrid vehicles use copper extensively in battery systems, motors, inverters, charging equipment, and high-voltage connections. CNC machining supports custom copper parts requiring accurate mounting features and stable electrical interfaces.
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Copper combines high thermal conductivity with excellent electrical performance, making it suitable for semiconductor and electronic equipment where heat removal and current transfer are critical. Precision machining allows cooling channels, mounting features, contact areas, and complex geometries to be produced in one component.
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Copper and high-strength copper alloys such as C172 are used where electrical performance, strength, wear resistance, or thermal management must be combined. CNC machining supports precision contacts, connectors, thermal components, and other performance-critical parts.
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Industrial machinery and electrical systems use copper components for power transmission, heat transfer, electrical contact, and wear-resistant applications. Depending on the function, different copper grades can be selected to balance conductivity, machinability, and mechanical strength.
Parts are manufactured directly in our own CNC factories, reducing middleman markups and unnecessary outsourcing costs. This gives buyers more transparent pricing and better control over total sourcing costs.
Machining, inspection, and production scheduling are coordinated in-house, reducing delays caused by multiple suppliers. This helps us respond faster to prototype, low-volume, and repeat production requirements.
Copper parts often require nickel, tin, silver, or gold plating. We review coating thickness, masking areas, and final dimensional requirements before machining to reduce the risk of tight threads, undersized holes, or assembly problems after plating.
Critical dimensions, mating features, and functional surfaces are checked throughout production to maintain consistency from the first approved part to repeat orders. This helps reduce batch variation and avoid unexpected fit or assembly issues.
C101 has higher purity and is often selected for parts with demanding electrical conductivity, thermal conductivity, vacuum, or material-purity requirements. C110 also provides good conductivity and is commonly used for busbars, connectors, heat-transfer components, and general electrical parts. The specified temper should also be considered because annealed, half-hard, and hard copper behave differently during machining and service.
Pure copper is highly ductile and tends to adhere to the cutting edge instead of forming clean, broken chips. This material buildup can affect dimensions, edge quality, and surface finish. Controlling it requires sharp cutting tools, suitable speeds and feeds, effective coolant and chip evacuation, and regular monitoring of tool condition.
Thin walls, deep pockets, large flat sections, slender shafts, and parts with uneven material removal are more susceptible to distortion. Soft-temper copper can also deform under excessive clamping pressure. These parts may require controlled workholding, balanced material removal, separate roughing and finishing operations, and intermediate dimensional checks.
These features have limited material support, so the cutting tool may push material outward as it exits the workpiece. Burr control may involve adjusting the toolpath and cutting direction, monitoring tool wear, and applying mechanical, brushing, or manual deburring methods. Drawings should define acceptable edge breaks for electrical contact surfaces, sealing surfaces, and assembly features to prevent excessive material removal.
Copper milling is generally used for parts with flat surfaces, pockets, slots, hole patterns, and complex profiles. Copper turning is better suited to sleeves, pins, rings, electrodes, and other rotational parts. When a component combines turned geometry with side holes, flats, or off-axis features, mill-turn machining can reduce setups and improve control of concentricity, position, and batch consistency.
The required allowance depends on the plating material, specified thickness, coating distribution, and final dimensional requirements. A single allowance cannot be applied to every project. Internal diameters, threads, mating surfaces, and electrical contact areas require particular attention. The drawing should state whether dimensions apply before or after plating and identify all masked or plating-free areas.
Copper surfaces are relatively easy to scratch and may show fingerprints or oxidation marks. Drawings should identify critical contact surfaces and specify any requirements for roughness, flatness, polishing, or cosmetic appearance. After machining, suitable cleaning, protective materials, and separated packaging can reduce contamination and part-to-part damage during inspection, shipping, and assembly.
The 3D model defines the part geometry and supports toolpath and workholding evaluation. The 2D drawing communicates requirements that may not be fully represented in the model, including tolerances, datums, threads, surface roughness, deburring, plating, and inspection criteria. Providing both helps reduce technical clarification and allows a more accurate assessment of machining risk, cost, and lead time.
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