TEMTS0600 - Tempil 600F Temperature Indicating Crayon

Precise Temperature Indication for Critical Industrial Applications

The Tempilstik 600°F (316°C) is the industry-standard solution for accurate surface temperature measurement. For over 80 years, Tempil has set the benchmark for phase-change temperature indication, providing welders, metalworkers, and industrial professionals with a simple, reliable, and cost-effective method to verify heat levels. Unlike complex electronic devices that require regular calibration and batteries, the Tempilstik relies on the immutable laws of physics: the melting point of its formulated compound is fixed and precise.

This specific stick is engineered to melt instantly when the surface temperature reaches 600°F. This makes it an indispensable tool for critical welding procedures where adhering to specific pre-heat, interpass, and post-weld heat treatment (PWHT) temperatures is mandatory to prevent cracking, warping, or metallurgical failure. The mark left by the Tempilstik will appear dull and chalky before the temperature is reached; once the surface hits 600°F, the mark liquefies into a glossy, transparent smear, providing an unmistakable visual signal.

Why Choose Tempilstik?

Accuracy is paramount in industrial MRO and fabrication. The Tempilstik 600°F is guaranteed accurate to within +/- 1% of its rated temperature. This level of precision meets the stringent requirements of major welding codes, including AWS D1.1, ASME Section I, III, and VIII, and ANSI/ASME Code B31.1 and B31.3. Furthermore, each batch is traceable to NIST standards, ensuring that your quality control processes are audit-ready.

Beyond accuracy, the Tempilstik is designed for the harsh realities of the shop floor. It is unaffected by static electricity, ambient light, or the emissivity of the material being tested—common pitfalls for infrared thermometers. Whether you are working on polished stainless steel, rusty carbon steel, or aluminum, the Tempilstik provides a direct contact reading you can trust. It is also formulated to be free of lead, sulfur, and halogens, making it safe for use on sensitive metals where corrosion or contamination is a concern.