TEMPIL 28350 TEMPILSTIK is a calibration‑free, wax-based temperature indicator designed to melt cleanly at 560 °C (1040 °F). Specially manufactured for precise thermal verification during welding preheat, interpass checks, and post-weld heat treatment, it offers instant visual confirmation without instruments. Each stick is permanently imprinted with the part number, temperature rating, and lot code for traceability, and is produced in the USA. Complies with AWS D1.1, ASME Sec. I/III/VIII, and ANSI/ASME B31.1/B31.3 standards—trusted in critical industrial applications across metal fabrication, shipbuilding, oil & gas, and rail.

  • Accurate Melt Rating: Melts precisely at 560 °C / 1040 °F, accurate to ±1 % in °F and ±3 % in °C 

  • Visual Verification: Wax disappears cleanly at threshold—no tools or calibration required 

  • Audit-Ready & Traceable: Fully laser-imprinted with part number (28350), rated temperature, and lot code along the entire stick 

  • Meets Major Codes: Compliant with welding and heat-treat thermal requirements under AWS D1.1, ASME I/III/VIII, and ANSI/ASME B31.1/B31.3 

  • Portable Industrial Format: ~5.5″ (0.625″ diameter) solid wax stick in a slip-resistant metal holder, ideal for field use 

  • Versatile Application: Effective on steel, stainless steel, aluminum, ceramic, glass, plastic, and more for critical process monitoring