High Conductive Copper Casting – High IACS Copper Castings
Cable Glands India manufactures high conductive copper castings for electrical bus bars, connector lugs, terminals, ground rods, transformer components, and switchgear contacts where current-carrying capacity is the primary design requirement. High conductive copper castings are produced from near-pure copper compositions, typically referenced against UNS C81100 / C81200 copper casting alloys, delivering electrical conductivity in the range of 90 to 101 percent IACS depending on melt purity and casting process. Electrical OEMs, switchgear manufacturers, transformer builders, and power utility contractors source high conductive copper castings from Cable Glands India because our foundry controls melt purity, degassing, and casting process to minimise oxide inclusions that would otherwise reduce conductivity and mechanical soundness.
Price: US$ 15.90 per kilogram | Custom pricing available for bulk and OEM orders
Product Overview
What High Conductive Copper Casting Is
High conductive copper casting refers to near-pure copper components, generally above 99.5 percent copper content, cast to shape rather than machined entirely from wrought bar stock, used where electrical conductivity, thermal conductivity, and current-carrying capacity outweigh the need for the higher strength of copper alloys. Controlled melting under a protective atmosphere or flux cover limits oxygen pickup, which is the main factor that reduces conductivity in cast copper.
High Conductive Copper Sand Casting
Sand casting is used for larger high conductive copper components such as bus bar sections, ground bar blanks, and terminal blocks in low to medium production volumes, with pouring practice controlled to limit gas porosity that would otherwise reduce both mechanical integrity and conductivity.
High Conductive Copper Investment Casting
Investment casting is offered for smaller, more intricate high conductive copper components such as connector lugs and terminal fittings where close as-cast tolerance reduces machining allowance while preserving the fine grain structure needed for consistent conductivity.
High Conductive Copper Green Sand Casting
Green sand casting supports medium volume high conductive copper components where reusable pattern equipment and efficient mould turnaround provide competitive per-piece pricing for terminal and connector production programs.
High Conductive Copper Centrifugal Casting
Centrifugal casting produces cylindrical high conductive copper blanks such as ground rod sections and bushing preforms with directional solidification that reduces porosity and improves the density needed for reliable current-carrying performance.
High Conductive Copper Permanent Mold Casting
Permanent mold casting is applied to higher volume high conductive copper components where a reusable metal mould improves dimensional repeatability and surface finish for recurring terminal and connector production runs.
High Conductive Copper Resin Sand Shell Molding / Casting
Resin sand shell moulding is used for high conductive copper components requiring improved surface finish and dimensional accuracy over conventional sand casting, reducing machining stock on bus bar and connector blanks.
Typical Products Cast in High Conductive Copper
Cable Glands India casts high conductive copper into bus bar sections, ground bars and ground rods, cable lug and connector blanks, transformer winding terminals, switchgear contact blocks, earthing and bonding components, and general high current electrical hardware machined to customer drawings from the as-cast blank.
Key Features
- High conductive copper composition referenced to UNS C81100 / C81200
- Sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, and resin sand shell casting available
- Electrical conductivity typically 90 to 101 percent IACS
- Good thermal conductivity for heat sink and contact applications
- Controlled melt practice to minimise oxide inclusions and porosity
- Custom pattern and tooling development in-house
- CNC machining available on the same castings for finished components
- Batch-wise conductivity and chemical composition test certificates
Melt Purity and Conductivity Control
Because conductivity in copper castings is highly sensitive to oxygen and trace element pickup during melting, furnace charge purity, protective cover, and pouring temperature are controlled and verified by conductivity testing on sample castings from each batch.
Electrical and Thermal Performance
High conductive copper castings are specified where both electrical conductivity for current-carrying capacity and thermal conductivity for heat dissipation are required together, such as in switchgear contact blocks and transformer terminal components.
Machinability and Post-Cast Processing
High conductive copper castings machine well for drilling, tapping, and surface finishing operations used to prepare bolted or crimped electrical connections, though cutting parameters are adjusted for the gummier chip formation typical of high purity copper.
Porosity Control for Current-Carrying Components
Internal porosity in copper castings increases electrical resistance locally and can create hot spots under load, so gating, risering, and pouring temperature are controlled to produce dense castings suitable for continuous current-carrying duty.
Casting Process Selection by Component
Cable Glands India selects sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, or resin sand shell casting for each high conductive copper order based on component geometry, wall thickness, production volume, and target unit cost.
Technical Specifications
| Parameter | Typical Range / Value |
|---|---|
| Alloy designation | High conductive copper / UNS C81100, C81200 |
| Copper content | 99.5 percent minimum (typical) |
| Electrical conductivity | Approximately 90 to 101 percent IACS |
| Tensile strength | 150 to 210 MPa (cast, annealed) |
| Elongation | 20 percent to 35 percent |
| Density | Approximately 8.9 g/cm3 |
| Casting methods | Sand, investment, green sand, centrifugal, permanent mold, resin sand shell |
| Typical casting weight range | 0.05 kg to 60 kg (larger on request) |
Raw Material Grades
| Grade | Alloy Type | Notes |
|---|---|---|
| C81100 | High conductivity cast copper | General purpose high conductivity casting |
| C81200 | High conductivity cast copper | Slightly modified composition window |
| ETP copper (reference) | Electrolytic tough pitch copper | Wrought reference grade for comparison |
| OFHC copper (reference) | Oxygen-free high conductivity copper | Used where maximum conductivity is critical |
International Equivalent Standards
| Country / Standard Body | Equivalent Reference |
|---|---|
| USA – ASTM / UNS | ASTM B824 / UNS C81100, C81200 |
| UK – BS | BS EN 1982 CC040A (cast copper reference) |
| Germany – DIN | DIN 1708 Cu-C (reference) |
| Europe – EN | EN 1982 CC040A / CC141A |
| India – IS | IS 1387 copper ingots and castings (reference) |
| IEC | IEC 60028 conductivity reference standard |
Product Types and Variants
| Casting Type | Description | Typical Use |
|---|---|---|
| Sand cast blanks | Larger components, low to medium volume | Bus bars, ground bars |
| Investment cast blanks | Close tolerance, intricate geometry | Connector lugs, terminal fittings |
| Green sand cast blanks | Medium volume, reusable pattern | Terminal blocks, connectors |
| Centrifugal cast bushings | Directionally solidified cylindrical blank | Ground rods, bushing preforms |
| Permanent mold cast blanks | Higher volume, repeatable dimensions | Terminals, connector bodies |
| Resin sand shell cast blanks | Improved surface finish and accuracy | Medium volume precision components |
| Finished machined components | Fully machined from cast blank | Ready-to-install electrical hardware |
Applications in Industry
Switchgear and Panel Board Components
Contact blocks, bus bar sections, and terminal connections in switchgear and panel boards are cast in high conductive copper to support current-carrying capacity under continuous and fault load conditions.
Transformer Terminals and Windings Hardware
Transformer terminal connections and winding hardware use high conductive copper castings for reliable electrical performance and heat dissipation at connection points.
Earthing and Grounding Systems
Ground rods, ground bars, and bonding components are cast in high conductive copper for low resistance earthing and grounding paths in electrical installations.
Power Distribution and Cable Accessories
Cable lugs, connector bodies, and power distribution hardware are cast in high conductive copper where current rating and long-term joint reliability are specification requirements.
Manufacturing Process
Production begins with melt preparation in induction furnaces under controlled atmosphere or flux cover to minimise oxygen pickup, with copper purity verified before pouring. Depending on component size, tolerance, and volume, castings are produced by sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, or resin sand shell casting, then fettled to remove gates, risers, and flash. Sample castings from each batch are conductivity tested before the balance of the batch proceeds to CNC machining, where mounting holes, contact faces, and terminal features are finished to drawing tolerance. Finished components are cleaned, dimensionally inspected, and packed for dispatch with accompanying conductivity and material certification.
Quality Standards and Certifications
| Standard / Certification | Scope |
|---|---|
| ISO 9001 | Quality management system certification |
| ASTM B824 | Reference specification for general engineering copper alloy castings |
| IEC 60028 | International standard for copper conductivity reference |
| EN 1982 | Reference specification for copper alloy ingots and castings |
| RoHS | Restriction of hazardous substances compliance on request |
Why Choose Cable Glands India
- In-house melting, casting, and CNC machining for full process control
- Conductivity testing on sample castings from every melt batch
- Sand, investment, green sand, centrifugal, permanent mold, and resin sand shell casting under one roof
- In-house pattern and tooling development for new component designs
- Material and conductivity certification available on request
- Competitive per-kilogram pricing with volume and OEM discounts
Frequently Asked Questions
Q1: What is high conductive copper casting?
High conductive copper casting refers to near-pure copper components cast to shape, typically referenced to UNS C81100 or C81200, offering electrical conductivity in the range of 90 to 101 percent IACS for current-carrying applications.
Q2: How does casting affect copper conductivity compared to wrought copper?
Cast copper conductivity depends on melt purity and porosity control; well-controlled castings approach wrought copper conductivity, while poor melt practice or gas porosity can reduce conductivity and mechanical soundness.
Q3: What casting methods do you offer for high conductive copper?
We offer sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, and resin sand shell casting, selected according to component size, tolerance, and order volume.
Q4: Can you provide conductivity test certificates?
Yes, sample castings from each production batch are conductivity tested, and certification is available on request for supplied components.
Q5: What products are typically cast in high conductive copper?
Common products include bus bars, ground bars and rods, cable lugs, connector bodies, switchgear contact blocks, and transformer terminal hardware.
Q6: What casting weight range can you produce?
Standard capability covers castings from approximately 0.05 kg up to 60 kg, with larger components available on request.
Q7: Can you supply finished machined components, not just raw castings?
Yes, our foundry and CNC machining operations work together to supply fully finished, ready-to-install electrical hardware from the same high conductive copper casting.
Q8: What is the price of high conductive copper casting?
Indicative pricing is US$ 15.90 per kilogram, with final pricing depending on component geometry, casting process, machining requirements, and order quantity.
Q9: Do you export high conductive copper castings internationally?
Yes, Cable Glands India exports high conductive copper castings and machined components worldwide, with documentation support for customs and OEM approval processes.
International Equivalent Terms
| Language | Equivalent Terms |
|---|---|
| Spanish | Fundicion de cobre de alta conductividad, Cobre fundido conductor |
| Russian | Lite iz vysokoprovodyashchey medi, Litaya med vysokoy provodimosti |
| French | Fonte de cuivre haute conductivite, Cuivre coule conducteur |
| Portuguese | Fundicao de cobre de alta condutividade, Cobre fundido condutor |
| Italian | Fusione di rame ad alta conduttivita, Rame fuso conduttore |
Linked Parts and Related Terms
High Conductive Copper Casting, C81100 Copper Casting, C81200 Copper Casting, Bus Bar Casting, Ground Rod Casting, Cable Lug Casting, Sand Casting, Investment Casting, Centrifugal Casting, Permanent Mold Casting.
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Get a Quote – High Conductive Copper Casting
Ready to source high conductive copper castings for bus bars, ground rods, connectors, or custom electrical components? Our foundry team can recommend the correct casting process for your application.
Price: US$ 15.90 per kilogram | Custom pricing available for bulk and OEM orders
Email: sales@cableglandsindia.com
Phone / WhatsApp: +91-22-43449300
Website: www.cableglandsindia.com
Share your drawing, required quantities, and preferred delivery timeline, and we will respond with a detailed quotation within one business day.