Precision Large Thickness Chromium Zirconium Copper Sheets

Short Description:

Product Specifications
Name： Thick Chromium Zirconium Copper Plate (Heavy CuCrZr Plate)
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： Mill Finish, Optional Milled or Polished
Thickness： 20mm – 200mm
Width： 500mm – 2000mm
Length： 1000mm – 4000mm (custom sizes available)
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 components · Consistent properties across thick sections
Application Field:
Resistance welding electrodes and holders, Plastic injection mold bases, High-current electrical busbars, Heat exchanger plates, Spot welding wheels and dies, Die casting plungers, Power generation components, Aerospace and automotive high-temperature parts

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Thick Chromium Zirconium Copper Plate – Process & Quality Assurance Statement
Our thick chromium zirconium copper plates 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 rolling techniques to maintain uniform properties in substantial thicknesses:

●Alloy Preparation: High-purity copper is alloyed with precise chromium and zirconium additions in controlled induction furnaces.
●Casting: Semi-continuous casting produces large ingots with homogeneous composition and minimal segregation.
●Hot Rolling: Powerful mills reduce the ingot to thick plate dimensions, refining grain structure and achieving high density.
●Solution Heat Treatment: Plates 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.
●Finishing: Precision leveling, milling, and cutting ensure excellent flatness and tight dimensional tolerances.
●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 thick plate
● 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 thickness; typical tolerance ±0.5mm on thickness)
• Surface quality and flatness (visual + profilometer 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 thick chromium zirconium copper plate delivers consistent, reliable performance in your most demanding high-temperature and high-conductivity applications.