Havar® Disk

Havar® (UNS R30004) discs are precision-cut circular blanks of cobalt-chromium alloy (Co 42%, Cr 20%, Ni 13%, Fe 19%, Mo 4%, W 2.8% (wt%), density 8.3 g/cm³) supplied ready-to-use for applications requiring exact diameters and consistent thickness, eliminating customer fabrication steps and ensuring dimensional accuracy for critical installations. Available in diameters from 10 to 100+ mm and thicknesses from 2.5 to 500 microns, Havar® discs are the standard choice for cyclotron target window assemblies in medical isotope production facilities, where precise circular geometry, uniform thickness (±5%), and clean edges are essential for reliable sealing, pressure containment, and beam targeting during production of ¹⁸F-FDG for PET imaging, ⁶⁴Cu for theranostics, ⁶⁸Ga for neuroendocrine tumour imaging, ⁸⁹Zr for immunoPET applications, ¹²³I, ¹²⁴I, and ²¹¹At for targeted radionuclide therapy, as well as emerging radioisotopes including ⁴⁴Sc, ⁸⁶Y, and ⁹⁰Y. The disc format provides immediate installation capability for particle detector entrance windows in nuclear physics research including alpha spectrometry, silicon detector arrays, and time-of-flight mass spectrometry; vacuum chamber viewport windows in electron microscopes, synchrotron beamlines, and ultra-high vacuum deposition systems; X-ray equipment window assemblies for medical radiography, industrial inspection systems, X-ray fluorescence analysers, and analytical instrumentation; burst disc pressure relief devices for chemical processing reactors, cryogenic systems, and high-pressure gas containment; diaphragm seals in absolute pressure transducers and differential pressure gauges for aerospace and industrial monitoring; entrance foils for ion implantation equipment and particle accelerators; vacuum isolation windows for plasma physics experiments and fusion research chambers; and sealed radioactive source encapsulation for calibration standards and industrial gauging applications, where dimensional precision, surface flatness, and edge quality directly impact sealing integrity, pressure rating, beam alignment, detection efficiency, and operational safety. Each disc is precision-cut with smooth edges suitable for O-ring sealing or welded assembly, can be further processed through electron beam or laser welding for hermetic enclosures, and maintains dimensional stability from cryogenic temperatures to 400°C. Havar® discs are supplied individually packaged or in sets with custom diameters and thicknesses available to match specific target holder dimensions, beam line configurations, or detector geometries, complete with certificates of analysis including chemical composition, mechanical properties, and dimensional verification upon request (First Article Inspection Report / FAIR or FAI report), providing various solutions for research institutions, medical isotope facilities, and aerospace manufacturers requiring immediate installation without additional fabrication.