Havar® Coil

Havar® (UNS R30004) coil is a continuously rolled, high-strength cobalt-chromium alloy (Co 42%, Cr 20%, Ni 13%, Fe 19%, Mo 4%, W 2.8% (wt%), density 8.3 g/cm³) supplied in convenient coil form for efficient processing, slitting to custom widths, and high-volume production applications. Available in thicknesses starting from 10 microns with widths tailored to customer specifications, Havar® coil provides consistent mechanical properties (tensile strength 1380-1725 MPa) across the entire coil length, enabling automated fabrication processes for aerospace pressure sensor diaphragms, medical device components, and precision spring elements where fatigue resistance and dimensional stability are critical. The coil format is particularly advantageous for manufacturers requiring continuous feeding operations, progressive die stamping, photo-chemical machining of multiple parts, or custom slitting to narrow widths for specialized applications. Havar®’s non-magnetic properties (ur ≈ 1) make coil stock ideal for sensor components in magnetic field environments, while its corrosion resistance and operational temperature range (-196°C to +400°C) suit demanding chemical processing and aerospace applications. The material can be processed through blanking, forming with intermediate annealing, welding by TIG or laser methods, and maintains its exceptional properties through typical fabrication operations. Havar® coil is supplied wound on protected cores with protective to prevent surface damage, complete with certificates of analysis documenting chemical composition and mechanical properties across the coil length, ensuring lot-to-lot consistency for production environments requiring reliable material performance in cyclotron target fabrication, detector window manufacturing, burst disc production, and precision instrument component assembly.