Copper Washers – Premium Quality Copper Plain Washers, C110 Copper Pressed Washers, and Copper Punched Washers
Copper Washers – Premium Quality Copper Plain Washers, C110 Copper Pressed Washers, and Copper Punched Washers
Price: US$ 11.10/Kilogram
We are one of the leading manufacturers and exporters of Copper washers, Copper Plain washers, C110 Copper Pressed Washers, and Copper Punched Washers from India. We have been supplying premium quality Copper washers to the world market for many decades. Our extensive manufacturing capabilities and three decades of global experience enable us to produce precision-engineered Copper washers that meet the most demanding industrial specifications. Our state-of-the-art manufacturing facilities are equipped with advanced machinery and quality control systems to ensure consistent delivery of superior Copper washers. With our deep understanding of international standards and customer requirements across diverse industries, we have established ourselves as a trusted partner for businesses worldwide. Our commitment to excellence, combined with our ability to customize products according to specific requirements, has made us a preferred choice for Copper washers among global customers. We maintain stringent quality parameters throughout our manufacturing process, ensuring that every Copper washer meets or exceeds industry standards for performance, durability, and reliability.
Product Overview and Specifications
Copper Washers
Copper washers are circular metallic sealing components manufactured from high-purity Copper materials, designed to provide effective sealing solutions in various mechanical assemblies. These washers offer exceptional corrosion resistance, thermal conductivity, and electrical conductivity properties that make them ideal for applications requiring reliable sealing performance under challenging operating conditions. Our Copper washers are manufactured using precision stamping and forming processes that ensure dimensional accuracy and consistent quality across all production batches.
The superior malleability of Copper allows these washers to conform effectively to mating surfaces, creating reliable seals that prevent leakage of fluids or gases. Our Copper washers demonstrate excellent resistance to atmospheric corrosion, making them suitable for both indoor and outdoor applications. The inherent antimicrobial properties of Copper also make these washers valuable in applications where hygiene and cleanliness are critical factors.
Copper Plain Washers
Copper Plain washers represent the most fundamental type of Copper sealing washers, featuring a simple flat circular design with a central hole for bolt or screw passage. These washers are manufactured through precision blanking operations that ensure clean edges and accurate dimensions. The plain design offers maximum contact area with mating surfaces, providing optimal sealing performance and load distribution characteristics.
Our Copper Plain washers are produced from high-grade Copper alloys that maintain their sealing properties across a wide temperature range. The smooth surface finish achieved through our manufacturing processes ensures minimal surface irregularities that could compromise sealing effectiveness. These washers are particularly effective in applications where space constraints require thin, compact sealing solutions without compromising performance.
Copper Sealing Washers :
Copper sealing washers are precision-engineered components designed to create leak-proof seals in high-pressure and high-temperature applications. Made from pure Copper or Copper alloys like C11000 or C12200, these washers offer excellent malleability, corrosion resistance, and thermal conductivity. Commonly used in automotive, hydraulic, plumbing, and aerospace systems, Copper sealing washers are ideal for applications requiring tight, metal-to-metal seals—such as banjo bolt fittings, brake lines, and fuel systems. Their ability to conform under pressure ensures a reliable seal, even on uneven surfaces. Available in flat, crush, and annealed forms, they comply with standards like DIN 7603, SAE J1231, and MIL-specs.
C110 Copper Pressed Washers
C110 Copper Pressed washers are manufactured from electrolytic tough pitch Copper (C110 grade) using specialized pressing operations that create precise dimensional characteristics and enhanced mechanical properties. The C110 Copper alloy offers 99.9% minimum Copper content with excellent electrical conductivity of 101% IACS (International Annealed Copper Standard), making these washers ideal for electrical and electronic applications.
Our C110 Copper Pressed washers undergo controlled pressing operations that optimize the grain structure and mechanical properties of the Copper material. This pressing process enhances the washers’ ability to maintain their shape under load while providing consistent sealing performance. The C110 grade Copper demonstrates superior resistance to stress corrosion cracking and maintains its electrical properties even under demanding operating conditions.
Copper Punched Washers
Copper Punched washers are manufactured using precision punching operations that create clean, burr-free edges with tight dimensional tolerances. Our punching process utilizes advanced tooling and dies that ensure consistent quality and dimensional accuracy across high-volume production runs. The punching operation creates washers with smooth internal and external edges that minimize stress concentrations and potential failure points.
These washers benefit from the cold working effects of the punching process, which can enhance certain mechanical properties while maintaining the inherent corrosion resistance and thermal conductivity of Copper. Our punching operations are optimized to minimize material waste while maximizing production efficiency, resulting in cost-effective solutions for customers requiring large quantities of Copper washers.
Material Grades and Specifications
| Grade | Copper Content (%) | Conductivity (% IACS) | Tensile Strength (MPa) | Hardness (HV) |
|---|---|---|---|---|
| C110 | 99.9 min | 101 | 220-290 | 45-75 |
| C101 | 99.95 min | 103 | 200-250 | 40-65 |
| C102 | 99.95 min | 102 | 210-270 | 42-70 |
| C106 | 99.9 min | 100 | 230-300 | 50-80 |
Material Properties Table
| Property | C110 Copper | Test Standard |
|---|---|---|
| Density | 8.94 g/cm³ | ASTM B152 |
| Melting Point | 1083°C | ASTM B152 |
| Thermal Conductivity | 390 W/m·K | ASTM E1461 |
| Electrical Resistivity | 0.0172 μΩ·m | ASTM B193 |
| Coefficient of Expansion | 16.5 × 10⁻⁶ /°C | ASTM E228 |
| Modulus of Elasticity | 110 GPa | ASTM E111 |
Manufacturing Processes and Machinery
Our manufacturing processes combine traditional metalworking techniques with modern precision machinery to produce high-quality Copper washers that meet stringent international standards. The manufacturing sequence begins with material selection and inspection, followed by cutting, forming, and finishing operations that ensure optimal product performance.
Primary Manufacturing Processes:
Blanking Operations: We utilize high-precision blanking presses with tonnage ratings from 50 to 500 tons, equipped with progressive dies that ensure consistent dimensional accuracy. Our blanking operations achieve tolerances of ±0.05mm for standard washers and ±0.02mm for precision applications.
Stamping and Forming: Advanced stamping presses with servo-driven systems provide precise control over forming forces and speeds, ensuring optimal material flow and minimal work hardening. Our forming operations can accommodate complex geometries while maintaining material integrity.
Punching Operations: CNC punching machines with automatic tool changing capabilities enable efficient production of various washer configurations. These machines utilize precision tooling with carbide inserts for extended tool life and consistent quality.
Surface Treatment: Specialized cleaning and surface treatment equipment removes manufacturing residues and provides the desired surface finish. Our surface treatment capabilities include degreasing, pickling, and protective coating applications.
Quality Control Machinery:
- Coordinate Measuring Machines (CMM) for dimensional verification
- Optical comparators for profile inspection
- Hardness testing equipment (Vickers and Rockwell scales)
- Surface roughness measuring instruments
- Material composition analyzers (XRF spectroscopy)
Standard Dimensional Chart
| Size Code | Inner Diameter (mm) | Outer Diameter (mm) | Thickness (mm) | Weight (g) |
|---|---|---|---|---|
| CW-6 | 6.2 | 12.0 | 1.0 | 0.52 |
| CW-8 | 8.2 | 16.0 | 1.2 | 1.05 |
| CW-10 | 10.2 | 20.0 | 1.5 | 1.98 |
| CW-12 | 12.2 | 24.0 | 1.5 | 2.87 |
| CW-16 | 16.2 | 30.0 | 2.0 | 5.24 |
| CW-20 | 20.2 | 37.0 | 2.0 | 7.86 |
| CW-24 | 24.2 | 44.0 | 2.5 | 12.45 |
| CW-30 | 30.2 | 56.0 | 3.0 | 22.18 |
International Standards and Compliance
Our Copper washers are manufactured in compliance with multiple international standards, ensuring global acceptance and reliability across diverse applications:
ASTM Standards:
- ASTM B152: Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar
- ASTM B187: Standard Specification for Copper, Bus Bar, Rod, and Shapes
- ASTM B75: Standard Specification for Seamless Copper Tube
DIN Standards:
- DIN EN 13599: Copper and Copper alloys – Copper for general purposes
- DIN 17672: Brazing consumables – Specifications
JIS Standards:
- JIS H3100: Copper and Copper alloy sheets, plates and strips
- JIS H3250: Copper tubes
BS Standards:
- BS EN 1172: Copper and Copper alloys – Sheet and strip for building purposes
- BS 2870: Specification for rolled Copper and Copper alloy sheet, strip and foil
IS Standards:
- IS 407: Specification for Copper for electrical purposes
- IS 1897: Copper and Copper alloy forgings
Surface Finishes and Treatments
Standard Finishes Available:
Mill Finish: Natural oxide layer provides basic corrosion protection while maintaining Copper’s inherent properties. This finish is suitable for most general-purpose applications where additional surface treatment is not required.
Bright Annealed Finish: Heat treatment in controlled atmosphere produces bright, clean surface with enhanced corrosion resistance. This finish is preferred for applications requiring superior appearance and performance characteristics.
Pickled Finish: Acid treatment removes surface oxides and contaminants, providing clean surface for subsequent coating or bonding operations. This finish ensures optimal adhesion when additional surface treatments are applied.
Passivated Finish: Chemical treatment enhances natural corrosion resistance and provides extended service life in challenging environments. This finish is particularly beneficial for marine and chemical processing applications.
Industries and Applications
Automotive Industry
Copper washers find extensive application in automotive brake systems, hydraulic assemblies, and engine components where reliable sealing and thermal conductivity are essential. The superior heat dissipation properties of Copper make these washers ideal for brake caliper assemblies and hydraulic brake lines.
Oil and Gas Industry
High-pressure sealing applications in oil and gas equipment rely on Copper washers for their ability to maintain seal integrity under extreme pressure and temperature conditions. These washers are commonly used in wellhead equipment, pipeline connections, and refinery processing equipment.
Electrical and Electronics
The excellent electrical conductivity of Copper washers makes them valuable in electrical connections, transformer assemblies, and electronic equipment where both sealing and electrical performance are required.
Marine Applications
The natural corrosion resistance of Copper in marine environments makes these washers suitable for shipbuilding, offshore equipment, and marine hardware applications where exposure to saltwater is a concern.
Chemical Processing
Copper washers provide reliable sealing in chemical processing equipment where resistance to specific chemicals and thermal stability are important factors in washer selection.
Tolerances and Quality Standards
Our manufacturing processes maintain tight tolerances that ensure consistent performance across all production batches:
Dimensional Tolerances:
| Parameter | Standard Grade | Precision Grade |
|---|---|---|
| Outer Diameter | ±0.10mm | ±0.05mm |
| Inner Diameter | ±0.05mm | ±0.02mm |
| Thickness | ±0.02mm | ±0.01mm |
| Flatness | 0.05mm | 0.02mm |
| Surface Roughness | Ra 0.8μm | Ra 0.4μm |
Quality Control Procedures:
Every production batch undergoes comprehensive quality control testing including dimensional verification, material composition analysis, hardness testing, and visual inspection. Our quality management system is certified to ISO 9001:2015 standards, ensuring consistent quality and continuous improvement in our manufacturing processes.
Statistical process control methods are employed throughout our manufacturing operations to monitor and maintain process capability indices (Cpk) above 1.33 for all critical dimensions. This approach ensures that our products consistently meet or exceed customer specifications while minimizing variation.
Performance Metrics and Testing
Mechanical Properties Testing:
Tensile Strength Testing: Conducted per ASTM E8 standards, our C110 Copper washers demonstrate tensile strength values between 220-290 MPa, ensuring adequate mechanical performance for demanding applications.
Hardness Testing: Vickers hardness measurements per ASTM E92 show consistent values between 45-75 HV, indicating proper material condition and processing parameters.
Fatigue Testing: Cyclic loading tests demonstrate excellent fatigue resistance, with washers maintaining seal integrity after 10⁶ cycles at 80% of maximum rated load.
Sealing Performance Metrics:
Leak Rate Testing: Helium leak detection testing shows leak rates below 1×10⁻⁹ mbar·l/s for properly installed washers, meeting stringent aerospace and automotive requirements.
Pressure Testing: Hydrostatic pressure testing confirms reliable sealing performance at pressures up to 250 bar (3,625 psi) depending on washer size and application configuration.
Temperature Performance: Thermal cycling tests from -40°C to +200°C demonstrate maintained sealing effectiveness across wide temperature ranges typical of industrial applications.
Manufacturing Lead Times and Delivery
Standard Turnaround Time: 4-6 weeks for production orders, including material procurement, manufacturing, quality control, and packaging operations. This timeframe ensures thorough quality control while maintaining efficient production schedules.
Expedited Production Options: Rush orders can be accommodated with 2-3 week delivery for standard sizes and specifications, subject to production capacity and material availability.
Inventory Management: We maintain strategic inventory levels of common sizes and materials to support customer requirements for quick delivery on frequently ordered items.
Production Scheduling: Our flexible manufacturing systems allow for efficient scheduling of both small prototype quantities and large production runs, ensuring optimal resource utilization and competitive pricing.
Frequently Asked Questions (Q&A)
Q1: What is the maximum operating temperature for C110 Copper washers? A: C110 Copper washers can operate continuously at temperatures up to 200°C (392°F) in air environments. For higher temperature applications up to 400°C, special heat treatment and material selection may be required.
Q2: How do Copper washers compare to other metallic washers in terms of sealing performance? A: Copper washers offer superior conformability due to the malleability of Copper, creating better sealing contact with mating surfaces compared to harder materials like Stainless Steel or Aluminium. The thermal conductivity also helps maintain consistent sealing performance under temperature variations.
Q3: Can Copper washers be reused after disassembly? A: While Copper washers can sometimes be reused if they show no visible damage or deformation, we recommend using new washers for critical applications to ensure optimal sealing performance and reliability.
Q4: What surface treatments are recommended for enhanced corrosion resistance? A: For marine or chemical environments, we recommend passivated or bright annealed finishes. For specific chemical compatibility, please consult our technical team for appropriate surface treatment selection.
Q5: Are custom dimensions and specifications available? A: Yes, we specialize in custom manufacturing to meet specific customer requirements. Our engineering team can work with your specifications to develop washers that meet your exact dimensional and performance needs.
Q6: What quality certifications and test reports are provided with shipments? A: We provide comprehensive material certificates including chemical composition, mechanical properties, dimensional inspection reports, and traceability documentation with every shipment.
Q7: How should Copper washers be stored to maintain their properties? A: Store in dry conditions away from direct moisture and corrosive atmospheres. Original packaging should be maintained until use to prevent surface contamination or oxidation.
Q8: What is the recommended installation torque for Copper washers? A: Installation torque depends on bolt size, application pressure, and assembly configuration. Our technical team can provide specific torque recommendations based on your application requirements.
Q9: Can Copper washers be used in electrical applications where conductivity is important? A: Yes, C110 Copper washers offer excellent electrical conductivity (101% IACS) making them ideal for electrical connections where both sealing and electrical performance are required.
Q10: What testing capabilities do you have for validating washer performance? A: Our laboratory facilities include dimensional measurement, hardness testing, tensile testing, leak rate testing, pressure testing, and material composition analysis to validate washer performance per customer specifications.
Q11: Are your Copper washers suitable for food industry applications? A: Yes, our food-grade Copper washers comply with relevant food safety standards and can be provided with appropriate certifications for food processing equipment applications.
Q12: What packaging options are available for bulk orders? A: We offer various packaging options including plastic bags, cardboard boxes, and custom packaging with customer labeling. Anti-tarnish packaging is available for long-term storage requirements.
Why Choose Our Copper Washers
Three Decades of Global Experience
Our extensive experience spanning over 30 years in manufacturing and exporting Copper washers has provided us with deep insights into customer requirements across diverse industries and geographic markets. This experience enables us to anticipate customer needs and provide solutions that exceed expectations.
Advanced Manufacturing Capabilities
Our state-of-the-art manufacturing facilities incorporate the latest machinery and technology to ensure consistent quality and efficient production. Investment in modern equipment allows us to maintain competitive pricing while delivering superior product quality.
Customization Expertise
We specialize in developing custom solutions that meet specific customer requirements. Our engineering team works closely with customers to understand their applications and develop washers that provide optimal performance for their unique needs.
Flexible Production Scheduling
Our manufacturing systems are designed for flexibility, allowing us to accommodate both small prototype quantities and large production runs efficiently. This flexibility extends to delivery schedules, where we can adjust production priorities to meet customer deadlines.
Superior Customer Support
Our technical support team provides comprehensive assistance throughout the entire customer relationship, from initial design consultation through production and after-sales support. We maintain open communication channels to ensure customer satisfaction.
Global Supply Chain Management
Our experience in international markets has developed robust supply chain management capabilities that ensure reliable delivery worldwide. We understand international shipping requirements and documentation needs for seamless global trade.
Customized Packaging Solutions
We offer specialized packaging options including custom labeling with customer logos, anti-tarnish protection, and packaging configurations optimized for customer inventory management systems.
Quality Assurance Excellence
Our comprehensive quality management system ensures consistent product quality through statistical process control, regular equipment calibration, and continuous improvement initiatives that enhance manufacturing efficiency and product reliability.
Packaging and Shipping Information
Standard Packaging Options:
Small Quantities (1-100 pieces): Individual plastic bags with identification labels, packed in sturdy cardboard cartons with protective cushioning materials.
Medium Quantities (100-1000 pieces): Bulk packaging in moisture-resistant plastic containers with foam inserts to prevent movement during transit.
Large Quantities (1000+ pieces): Industrial packaging in corrugated containers with internal dividers and protective materials optimized for efficient handling and storage.
Custom Packaging Services:
Customer Labeling: We provide custom labeling services with customer logos, part numbers, and specifications to support customer inventory management systems.
Anti-Tarnish Protection: Special packaging with tarnish-resistant materials is available for applications requiring extended storage periods or humid environment protection.
Palletized Shipping: Large orders can be palletized for efficient warehouse handling and reduced shipping costs for bulk quantities.
International Shipping Capabilities:
Our experienced logistics team handles all aspects of international shipping including documentation preparation, customs clearance assistance, and coordination with freight forwarders to ensure timely delivery worldwide. We maintain shipping partnerships with major international carriers to provide competitive rates and reliable service.
Customer Testimonial
Robert Martinez, Procurement Manager, USA:
“We have been sourcing Copper washers from this manufacturer for over eight years, and their consistency in quality and delivery has been exceptional. Their technical team worked closely with us to develop custom C110 Copper washers for our high-pressure hydraulic applications, and the performance has exceeded our expectations. The dimensional accuracy and surface finish quality are outstanding, and their ability to meet our tight delivery schedules has made them an invaluable partner. Their customer service and technical support are professional and responsive, always providing detailed answers to our technical questions. I would highly recommend them to any company looking for reliable, high-quality Copper washers and exceptional customer service.”
Glossary of Technical Terms
IACS (International Annealed Copper Standard): Reference standard for measuring electrical conductivity, where pure annealed Copper at 20°C represents 100% IACS conductivity.
Electrolytic Tough Pitch Copper (ETP): High-purity Copper produced through electrolytic refining, containing 99.9% minimum Copper content with excellent electrical and thermal properties.
Malleability: The ability of a material to be deformed under compressive stress without cracking, allowing Copper washers to conform to mating surfaces for effective sealing.
Thermal Conductivity: The rate at which heat flows through a material, measured in watts per meter per Kelvin (W/m·K). Copper’s high thermal conductivity makes it ideal for heat dissipation applications.
Stress Corrosion Cracking: A failure mechanism where the combination of tensile stress and corrosive environment leads to crack propagation in metals.
Cpk (Process Capability Index): Statistical measure of manufacturing process capability, indicating how well a process can produce products within specification limits.
Passivation: Chemical treatment that enhances the natural corrosion resistance of metals by forming a protective oxide layer on the surface.
Annealing: Heat treatment process that softens metals and relieves internal stresses, improving workability and stability.
Grain Structure: The crystalline structure of metals that affects mechanical properties and material behavior under stress and temperature.
Work Hardening: Strengthening of metals through plastic deformation, which increases hardness and strength while reducing ductility.
Related Terms
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Ready to Experience Superior Quality Copper Washers?
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