Durable Heat-Resistant Chromium Zirconium Copper Rings

Short Description:

Product Specifications
Name： Chromium Zirconium Copper Ring (CuCrZr Ring)
Standard： ASTM B768, RWMA Class 2, UNS C18150, RoHS Compliant, REACH Compliant
Material： C18150 (Chromium Zirconium Copper, Cr 0.5-1.5%, Zr 0.03-0.3%)
Surface： Precision Machined, Smooth Finish, Optional Polished
Outer Diameter (OD)： 50mm – 800mm
Inner Diameter (ID)： 20mm – 600mm
Height/Thickness： 10mm – 200mm
Product Features:
Excellent electrical and thermal conductivity · Superior strength retention at high temperatures · Outstanding softening and wear resistance · High fatigue strength under cyclic loading · Reliable performance in repeated heating/cooling cycles · Good machinability for large rings · Consistent properties across thick sections
Application Field:
Resistance welding electrode rings and holders, Plastic injection mold components, High-current electrical contacts, Heat exchanger sealing rings, Spot welding wheels and dies, Die casting plungers and rings, Power generation components, Aerospace and automotive high-temperature parts

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Chromium Zirconium Copper Ring – Process & Quality Assurance Statement
Our chromium zirconium copper rings are specifically developed for heavy-duty applications requiring sustained conductivity and mechanical strength at elevated temperatures, where standard copper would soften or lose performance.

Key process features

Production employs advanced metallurgical and machining techniques to maintain uniform properties in ring form:

●Alloy Preparation: High-purity copper is alloyed with precise chromium and zirconium additions in controlled induction furnaces.
●Casting: Semi-continuous casting produces large ingots or hollow billets with homogeneous composition.
●Hot Extrusion or Forging: Material is hot worked into near-net ring shapes, refining grain structure and achieving high density.
●Solution Heat Treatment: Rings are solution annealed at high temperature and rapidly quenched to create a supersaturated matrix.
●Cold Working & Aging: Controlled reduction followed by precipitation aging develops optimal hardness, strength, and conductivity balance.
●Precision Machining: CNC turning, boring, and grinding achieve exact OD, ID, and height tolerances with smooth surfaces.
●Surface Protection: Final cleaning and light oiling prevent oxidation during storage and global shipping.

Quality control system

● Full traceability from raw alloy melt to finished ring
● Comprehensive material test certificates and heat treatment reports supplied with every shipment
● Sample retention ≥3 years for third-party verification (SGS, BV, TÜV, etc.)
● 100% inspection of critical parameters:
• Chemical composition (optical emission spectrometry)
• Mechanical properties (tensile, hardness, and conductivity tested at multiple locations)
• Dimensional accuracy (CMM and ultrasonic gauges; typical tolerance ±0.5mm on OD/ID/height)
• Surface quality and roundness (profilometer + visual checks)
• Internal soundness (full ultrasonic scanning)
● Internal standards exceed ASTM B768 requirements. Typical C18150 aged properties:
Tensile strength ≥450 MPa, Hardness ≥140 HB, Electrical conductivity ≥80% IACS, Excellent stability up to 500°C without significant softening.
● ISO 9001:2015 certified facility ensures every chromium zirconium copper ring delivers consistent, reliable performance in your most demanding high-temperature and high-conductivity applications.