C18000 is a copper alloy composed primarily of copper and chromium. It belongs to the copper alloy family and is widely used in applications requiring high temperature resistance, good electrical conductivity, and mechanical strength. Its relatively high chromium content gives the alloy excellent heat resistance and strength while maintaining good conductivity, making it suitable for electrical and electronic equipment in harsh environments.
Key Features
• Excellent Electrical Conductivity: With a high conductivity of approximately 80% IACS, C18000 is ideal for electrical contact materials and high-current connectors.
• High Temperature Resistance: This alloy can withstand working environments up to 1000°C and retains its mechanical properties at high temperatures, making it suitable for high-temperature equipment and conditions.
• High Strength and Corrosion Resistance: The addition of chromium enhances its resistance to corrosion and oxidation, extending the service life of equipment.
• Good Workability: After heat treatment, C18000 achieves high strength and hardness while maintaining good machinability. It is suitable for various machining processes, including turning, milling, and welding.
Chemical Composition
• Copper (Cu): Balance
• Chromium (Cr): 0.8 - 1.0%
• Silicon (Si): 0.4 - 0.8%
• Iron (Fe): 0.15%
• Nickel (Ni): 1.8 - 3.0%
• Other elements: Trace impurities such as manganese and iron
Physical & Mechanical Properties
• Density: 8.9 g/cm³
• Melting Point: 1020°C
• Electrical Conductivity: 80% IACS
• Tensile Strength: 550 MPa (under standard conditions)
• Yield Strength: 250 MPa
• Hardness: Brinell Hardness 150 - 220 HB
• Elongation: 15% (under standard conditions)
Common Applications
• Electrical & Electronics: Connectors requiring high conductivity, electrical switches, contactors, relays, and busbars
• Automotive: Engine heat-resistant components, electrical connectors, and other high-temperature parts
• Power & Energy: Ideal for high-current, high-temperature environments in power equipment such as cable connectors and power component assemblies
Application Products
• Blow pins, cut-off devices, mold cavities
• Mold cores, core pins, and ejector pins for injection molds
• Heat sink inserts in steel-plastic molds
• Hot runner systems for injection molds
• Plunger tips for die-casting machines
• Resistance welding wheels and fixtures
• Gate bushings and cavities for injection molds
• Stud welding clamps and tips
• Welding wire and flash welding molds
• Resistance welding tips
Physical Characteristics & Application Advantages
• Thermal Stability: Capable of continuous operation below 1000°C, ideal for power, electronic, and heat exchange equipment
• Oxidation Resistance: Excellent oxidation resistance in high-temperature environments, extending equipment life
• Corrosion Resistance: Maintains stable performance in steam, oxygen, and other corrosive gases, reducing maintenance costs
Common Sizes & Dimensions
C18000 copper-chromium alloy is available in various specifications as per customer requirements. Common sizes include:
• Rod: Diameter from 3mm to 150mm
• Plate and Strip: Thickness from 0.12mm to 200mm
• Wire: Diameter from 0.1mm to 10mm
• Custom Specifications: Please contact customer service for special dimensions
Applicable Standards
• ASTM B224 / UNS C18000 (USA)
• DIN 17666 / DIN EN 12163 (Germany): CuCrZr (approximate)
• EN 12163, EN 12165, EN 12167 (Europe): CW106C
• JIS H3100 (Japan): C1800 (approximate)
• GB/T 5231 (China): QCr0.8-0.4 (approximate)
• ISO 5182 (International – Electrode Materials for Resistance Welding): CuCr1Zr
Pricing Information
The price of C18000 copper-chromium alloy varies based on specific dimensions, quantity, processing requirements, and delivery time. Please contact our customer service or sales team for an accurate quote.
