TEMCo Titanium Wire 18 Gauge 1 lb (401 ft) Surgical Grade 1 Resistance AWG ga 18 AWG, Average wire diameter: 0.0403 in. (1.02362 mm) Commercially Pure Titanium, Surgical Grade 1. Rated for temperatures up to 1670C (3038F). 100% MADE IN THE U.S.A. All TEMCo wire is produced and spooled right here in the U.S.A. PERFECTLY TENSIONED. Zero elongation, scratches or other flaws ensure quality wire on every spool. ZERO CONTAMINANTS. Clean production environment houses the spooling process. Hands-off computerized spooling eliminates skin salts and oils.