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Material Database

C18150 Chromium Zirconium Copper

Suitable for manufacturing highly conductive parts, high thermal conductivity parts, welding electrodes, mold thermal inserts, wear-resistant conductive parts, connecting terminals, and copper alloy functional components that require both strength and thermal conductivity.

Material description

C18150 Chromium Zirconium Copper is a high-strength, highly conductive copper alloy material, mainly using copper as the matrix, with added elements such as chromium and zirconium to enhance strength, hardness, wear resistance, anti-softening ability, and high-temperature stability. Compared toPure CopperT2 and TU2 Oxygen-Free Copper, C18150 has better strength, wear resistance, and high-temperature softening ability; Compared to beryllium copper C17200, it generally has better electrical and thermal conductivity, but its elasticity and ultimate strength are not as good as beryllium copper. It is commonly used in electrodes, conductive clamps, welding electrodes, thermal inserts, connectors, wear-resistant conductive parts, and mold thermal conductive parts.

C18150 Chromium Zirconium CopperC18150 chromium-zirconium-copperCrZrCuCuCrZrChromium-zirconium-copperChromium-zircon-copper alloyHigh-strength, high-conductivity copperElectrode copperCopper electrodes are weldedThermally conductive copper alloy
The C18150 Chromium Zirconium Copper is characterized by its attention to electrical conductivityThermal conductionStrength and wear resistanceIt is suitable for applications that conduct electricity and heat while requiring a certain level of mechanical strengthIt's not as soft asPure CopperNor is it as easy to cut as BrassInstead, it is more suitable for welding electrodesConductive fixturesMold thermal interinserts and high-performance copper alloy partsAfter proper heat treatment, C18150
C18150 Chromium Zirconium Copper
CNC MachiningMetals

Material compatibility assessment

By focusing on application scenarios, boundaries of advantages, and non-recommended scenarios, it helps sales, customer service, and quoting staff quickly determine whether the material meets current part requirements.

Core advantages

Good electrical conductivity, thermal conductivity, strength higher thanPure Copperand oxygen-free copper, good wear resistance, good softening resistance, suitable for electrodes and conductive fixtures, suitable for high-temperature conductive and thermal conductivity scenarios, suitable for mold thermal conductive inserts and welding electrodes, with balanced overall performance.

Suitable for the product

Welded electrodes, resistance welding electrodes, spot welding electrodes, conductive clamps, conductive blocks, electrode bases, electrode caps, mold thermal inserts, injection mold thermal conductive parts, heat dissipation structural parts, connecting terminals, conductive connectors, copper bushings, wear-resistant conductive parts, thermal conductive parts, electronic and electrical copper parts, conductive parts for industrial equipment.

Not suitable for the product

Extremely low-cost ordinary copper parts, high-elastic spring clips, high-frequency elastic snaps, food direct contact parts, medical implant parts, strong acid and strong alkali environment parts, seawater long-term contact parts, ultra-high strength load-bearing structural parts, lightweight structural parts, and parts requiring only ordinary decorative appearance.

Key parameter references

The following parameters come from product information and material knowledge fields, used for design review, quotation communication, and preliminary judgment before material selection.

Material positioningSuitable for manufacturing highly conductive parts, high thermal conductivity parts, welding electrodes, mold thermal inserts, wear-resistant conductive parts, connecting terminals, and copper alloy functional components that require both strength and thermal conductivity.
Precision performanceC18150 Chromium Zirconium Copper is suitable for CNC turning, milling, drilling, tapping, reaming, wire cutting, and precision machining. Compared toPure Copper, C18150 has higher strength and hardness, and generally better machining stability, but issues such as burrs, tool sticking, and surface scratches during copper alloy processing still need attention. It is recommended to separately control tolerances and surface roughness on the electrode end surfaces, conductive contact surfaces, mold thermal mating surfaces, and assembly holes.
Dimensional tolerancesThe conventional dimensional tolerances of CNC machining C18150 Chromium Zirconium Copper can be referenced as ± 0.02mm to ±0.10mm, while ordinary structural parts can be evaluated at ±0.10mm-±0.20mm. Electrodes, conductive fixtures, mating surfaces, hole positions, and mold inserts can be further controlled according to specific requirements. These values are standard reference ranges and do not guarantee absolute tolerances for all structures. Actual values should be confirmed based on part dimensions, machining methods, heat treatment status, surface treatment, and assembly requirements.
Minimum Wall ThicknessThe wall thickness of ordinary CNC machined structures is recommended to be no less than 0.8mm-1.0mm. Since C18150 is commonly used in conductive, thermal, and wear-resistant structures, it is not recommended to design the load-bearing positions, threaded positions, press-fitting positions, and high-current contact points too thin. Thin-walled electrodes, thin conductors, and large-area heat sinks should focus on evaluating deformation, heat generation, and assembly strength.
Recommended wall thicknessGeneral conductive parts and connectors are recommended at 1.0mm-3.0mm; electrodes, conductive blocks, mold thermal inserts, heat sink blocks, and assembly load-bearing positions are recommended at least 2.0mm; high-current conductive parts should be structurally designed based on current capacity, heat generation, heat dissipation conditions, and contact area.
Minimum apertureCNC machining can achieve smaller hole diameters, but small and deep holes require attention to chip removal, burrs, and tool strength. For general designs, the recommended aperture is no less than 1.0mm. It is recommended to reserve machining allowance for electrode cooling holes, positioning holes, threaded holes, assembly holes, and conductive connection holes. If necessary, drilling, reaming, boring, deburring, and cleaning should be used.
Assembly clearanceFor precision metal assembly, one side can be reserved at 0.02mm-0.10mm according to fitting requirements; for ordinary plug-in and assembly, it is recommended to reserve 0.10mm-0.30mm per side. If parts require nickel, silver, gold, tin, or anti-oxidation treatments, additional gaps should be reserved according to the thickness of the coating. The conductive contact position should not be too loose; it should be evaluated separately based on contact pressure, contact area, surface treatment, and conductivity requirements.
Detailed performanceC18150 Chromium Zirconium Copper suitable for machining holes, grooves, steps, chamfers, threads, conductive contact surfaces, electrode terminals, cooling holes, heat dissipation surfaces, and simple structural details. Compared toPure Copper, C18150 offers better detail processing stability, but overly fine sharp corners, thin edges, small text, and microstructures may still be affected by burrs, surface treatment, and polishing. LOGO, number, and marking are recommended to be achieved through laser marking, engraving, or etching.
Surface effectC18150 Chromium Zirconium Copper original surface usually appears copper-red, orange-red, or yellowish-red metallic, and is somewhat steadier thanPure Copper. CNC machining produces a brighter metal surface, polishing enhances gloss, and sandblasting produces a matte copper alloy surface. Long-term exposure to air gradually oxidizes and darkens, with the surface possibly showing dark red, brown, or oxidation spots. If long-term conductivity and appearance are needed, nickel, silver, gold, tin, or oxidation protection can be applied.

Typical application scenarios

Based on material characteristics and suitable product ranges, customer needs are broken down into easier application directions to determine.

Product validation

Welded electrodes, resistance welding electrodes, spot welding electrodes, conductive clamps, conductive blocks, electrode bases, electrode caps, mold thermal inserts, injection mold thermal conductive parts, heat dissipation structural parts, connecting terminals, conductive connectors, copper bushings, wear-resistant conductive parts, thermal conductive parts, electronic and electrical copper parts, conductive parts for industrial equipment.

Reasons for material selection

Suitable for manufacturing highly conductive parts, high thermal conductivity parts, welding electrodes, mold thermal inserts, wear-resistant conductive parts, connecting terminals, and copper alloy functional components that require both strength and thermal conductivity.

Material characteristics

C18150 Chromium Zirconium Copper features a balance of electrical conductivity, thermal conductivity, strength, and wear resistance, making it suitable for applications that require both electrical and thermal conductivity while requiring a certain level of mechanical strength. It is not as soft asPure Copper, nor as easy to cut as Brass; instead, it is more suitable for welding electrodes, conductive fixtures, mold thermal conductive inserts, and high-performance copper alloy parts. After proper heat treatment, C18150 can achieve better strength, hardness, and resistance to softness.

Design and risk review

Based on wall thickness, hole position, assembly clearance, dimensional tolerances, and material usage risks, determine in advance whether the part structure is suitable for C18150 Chromium Zirconium Copper.

Design considerations

  • When designing C18150 Chromium Zirconium Copper parts
  • Conductive paths should be prioritized
  • Thermal conduction path
  • Contact area
  • Cooling method
  • Assembly pressure
  • Wear locations and surface oxidation
  • Electrode components should ensure sufficient cross-sectional area
Precision performanceC18150 Chromium Zirconium Copper is suitable for CNC turning, milling, drilling, tapping, reaming, wire cutting, and precision machining. Compared toPure Copper, C18150 has higher strength and hardness, and generally better machining stability, but issues such as burrs, tool sticking, and surface scratches during copper alloy processing still need attention. It is recommended to separately control tolerances and surface roughness on the electrode end surfaces, conductive contact surfaces, mold thermal mating surfaces, and assembly holes.
Dimensional tolerancesThe conventional dimensional tolerances of CNC machining C18150 Chromium Zirconium Copper can be referenced as ± 0.02mm to ±0.10mm, while ordinary structural parts can be evaluated at ±0.10mm-±0.20mm. Electrodes, conductive fixtures, mating surfaces, hole positions, and mold inserts can be further controlled according to specific requirements. These values are standard reference ranges and do not guarantee absolute tolerances for all structures. Actual values should be confirmed based on part dimensions, machining methods, heat treatment status, surface treatment, and assembly requirements.
Quality riskThe main risks of C18150 Chromium Zirconium Copper include unclear material condition, improper heat treatment, insufficient electrical conductivity, substandard hardness, processing burrs, surface oxidation, uneven contact surfaces, and insufficient assembly clearance. It is suitable for high-performance conductive and thermal components, but you can't just look at the material name—you also need to clarify hardness, conductivity, heat treatment status, surface treatment, and operating conditions. When welding electrodes, special attention should be paid to electrode wear, heating, cooling, contact pressure, and service life.
Surface effectC18150 Chromium Zirconium Copper original surface usually appears copper-red, orange-red, or yellowish-red metallic, and is somewhat steadier thanPure Copper. CNC machining produces a brighter metal surface, polishing enhances gloss, and sandblasting produces a matte copper alloy surface. Long-term exposure to air gradually oxidizes and darkens, with the surface possibly showing dark red, brown, or oxidation spots. If long-term conductivity and appearance are needed, nickel, silver, gold, tin, or oxidation protection can be applied.

Post-processing and assembly precautions

Post-processing of C18150 Chromium Zirconium Copper affects appearance, dimensions, hole position, assembly clearance, and usage validation results, and should be explained in advance during quotation, DFM review, and sample confirmation stages.

Post-processing options

Post-processing should focus on appearance display, dimensional fitting, connection assembly, and testing verification. Parts involving assembly positions need to be reserved in advance for machining, coating, and trial assembly allowances.

Remove burrsDeburring is used to improve the appearance of parts, assembly, or functional verification effects, and it is necessary to confirm the impact on dimensions, strength, and delivery in combination with material characteristics.
PolishingImproves support marks, layer lines, and edge feel, but will slightly alter local dimensions and the shape of sharp edges.
PolishingUsed to improve transparency or surface smoothness, may change edge details and local dimensions.
BrushedBrushing is used to improve the appearance, assembly, or validation of parts, and must be combined with material properties to confirm dimensions, strength, and delivery impact.
SandblastingAchieve a more uniform matte surface, suitable for engineering prototype display and slight surface mark reduction.
Nickel platingNickel plating is used to improve the appearance, assembly, or validation of parts, and must be determined by combining material properties with dimensions, strength, and delivery impact.
Silver-platedSilver plating is used to improve the appearance, assembly, or validation of parts, and must be combined with material properties to confirm dimensions, strength, and delivery impact.
GildedGold plating is used to improve the appearance, assembly, or validation of parts, and must be determined by combining material properties with dimensions, strength, and delivery impact.

Key control point

Size impactC18150 Chromium Zirconium Copper usually requires combining material condition and heat treatment processes to ensure strength; Hardness and conductivity; During machining, attention should be paid to tool wear; Burrs; Knife sticking and surface scratches; When used as electrodes or conductive contacts; Focus should be placed on controlling the flatness of the contact surface; Surface cleanliness
Assembly clearanceFor positions involving snapping, plugging, sliding, or enclosure closure, the clearance needs to be adjusted according to post-processing thickness, material shrinkage, and trial assembly results.
Hole Position StrengthThreading, inserting nuts, locking screws, and the areas around positioning holes need to ensure wall thickness to avoid cracks, stripped threads, or chipped edges during post-processing or assembly.
Environmental matchingWhen used in high-temperature, outdoor, humid, friction, or load-bearing scenarios, post-processing materials, adhesives, coatings, and fasteners must also meet the corresponding usage environment.

Structure and usage boundaries

For common issues such as threads, snaps, strength, temperature resistance, and weather resistance, identify in advance whether the material needs to be replaced or if another processing method should be used.

Thread Recommendation

Applicable ScopeC18150 Chromium Zirconium Copper can be tapped and threaded; thread strength is usually better thanPure Copperand oxygen-free copper, but still not as strong as steel parts.
Risk pointFor frequent disassembly, high locking force, or highly reliable connection positions, it is recommended to increase the thread meshing length, use sleeves, steel fitting, or standard fastener structures.
Recommended practiceThe threads of electrode parts should avoid overheating, oxidation, and wear, which can make assembly and disassembly difficult.

Buckle recommendation

Applicable ScopeC18150 Chromium Zirconium Copper is not suitable for designing large deformation elastic buckles like plastics, nor for long-term high-frequency elastic structures.
Risk pointIt can be designed with low-deformation conductive clamping structures, slots, pressure plates, screw fixation, positioning steps, or pin connections.
Recommended practiceIf highly elastic conductive snaps or spring clips are needed, materials such as beryllium copper C17200, phosphor bronze, 65Mn, or 301 stainless steel are better suited for elastic operation.

Strength and Environment

Mechanical strengthC18150 Chromium Zirconium Copper strength and hardness are significantly higher thanPure CopperT2 and TU2 Oxygen-Free Copper, with better wear resistance and anti-softening ability, making it suitable for electrodes, conductive fixtures, and wear-resistant conductive components.
Environmental boundaryIt is not a high-strength load-bearing material and cannot replace steel or stainless steel to bear extremely high structural loads.
Recommended practiceThe load-bearing structure should be designed and verified based on wall thickness, assembly method, heat treatment condition, contact pressure, and operating temperature.C18150 Chromium Zirconium Copper has better high-temperature softening resistance thanPure Copperand oxygen-free copper, making it suitable for conductivity, thermal conductivity, and electrode applications at certain temperatures. At high temperatures, attention should still be paid to strength loss, surface oxidation, contact surface ablation, and changes in coating properties. Welded electrodes and high-temperature thermal conductive components should be verified based on actual temperature, current, cooling conditions, contact pressure, and operating cycle.C18150 Chromium Zirconium Copper gradually oxidizes and darkens in air, and humidity, sweat, salt spray, sulfides, ammonia-based environments, or acidic or alkaline environments accelerate discoloration and corrosion. Ordinary indoor conductive components can be improved for stability through cleaning, nickel plating, silver plating, gold plating, tin plating, or oxidation resistance treatments. If used for long-term outdoor or corrosive environments, reliable surface protection should be added, or depending on the environment, coated copper parts, stainless steel, or other corrosion-resistant materials should be used.

Alternative material selection and final judgment

When customer demand exceeds C18150 Chromium Zirconium Copper material boundaries, it is necessary to combine strength, temperature resistance, toughness, long-term stability, and mass production goals to promptly recommend alternative materials or processing technologies.

Alternative material suggestions

If higher conductivity and lower oxygen content are needed, TU2 Oxygen-Free Copper can be chosen; If ordinary conductivity and thermal conductivity are needed at lower cost, Pure CopperT2 is an option; If higher elasticity and fatigue performance are required, beryllium copper C17200 can be chosen; If better machinability and low-cost small hardware are needed, HPb59-1 lead Brass or H62Brass can be chosen; If higher corrosion resistance is required,316L Stainless Steel, TC4 Titanium Alloy (Ti-6Al-4V), or nickel-plated copper parts can be chosen.

Material selection suggestions

If customers need parts with good electrical and thermal conductivity, strength, wear resistance, and resistance to high-temperature softening at the same time, C18150 Chromium Zirconium Copper is a very suitable choice. If it's just ordinary copper busbars, conductive sheets, or heat sinks, Pure CopperT2 or TU2 Oxygen-Free Copper is usually more economical. If spring clips, connector elastic terminals, or long-life elastic structures are needed, priority should be given to beryllium copper C17200, phosphor bronze, or stainless steel spring materials.

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