Overview
Zirconium sheets and plates are premium metallic materials derived from zirconium, a transition metal with exceptional corrosion resistance. These products are manufactured through a series of processes including melting, hot rolling, and cold rolling to achieve precise thicknesses ranging from foil-thin sheets to heavy plates. Industrial-grade zirconium (typically R60702 or R60705 alloys) is most commonly used for sheet production. The material's unique combination of properties makes it indispensable for critical applications where failure is not an option, particularly in aggressive chemical environments.
Physical and Chemical Properties
Zirconium exhibits outstanding resistance to corrosion by most organic and inorganic acids, salt solutions, and alkaline media. This property stems from the formation of a stable, self-healing oxide layer when exposed to oxygen. The metal maintains good mechanical strength at elevated temperatures up to 400°C. Thermal conductivity of zirconium is relatively low (22 W/m·K), while its thermal expansion coefficient matches closely with some types of glass. The material's low thermal neutron absorption cross-section (0.18 barns) makes it particularly valuable for nuclear applications. Electrical resistivity is about 42 μΩ·cm at room temperature.
Main Applications
In chemical processing, zirconium sheets serve as lining material for reactors, heat exchangers, and piping systems handling highly corrosive substances like hydrochloric acid. The nuclear industry utilizes zirconium plates for fuel rod cladding due to their neutron transparency and corrosion resistance in high-temperature water. The aerospace sector employs thin zirconium sheets in certain engine components and thermal protection systems. Other applications include surgical implants (where biocompatibility is crucial), specialty valves and pumps, and as getter material in vacuum tubes.
Safety and Storage
While zirconium metal itself is non-toxic, fine zirconium powder can be pyrophoric and requires careful handling under inert atmosphere. Finished sheets and plates should be stored in clean, dry conditions to prevent surface contamination or oxidation. Machining operations generate heat that can lead to ignition risks if proper cooling is not maintained. Cutting and welding should be performed with appropriate ventilation to avoid inhalation of metal fumes. Firefighting for zirconium fires requires Class D extinguishers - never use water.
B2B Procurement Guide
When sourcing zirconium sheets, specify the alloy grade (commercially pure or alloyed), thickness tolerance (±5-10% is typical), and surface finish requirements (mill finish, polished, or pickled). Lead times can be significant due to specialized manufacturing processes. Quality certifications should include material test reports with chemical composition and mechanical properties. For critical applications, consider requesting additional testing like ultrasonic inspection for internal defects. Bulk orders (typically 100kg+) often receive better pricing, with thickness being the primary cost factor.
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