T932 - Tempil 932°F (500°C) Temperature Indicating Crayon

Precision Temperature Indication for Industrial Applications

The Tempilstik 932°F (500°C) is an industry-standard temperature indicating crayon designed to provide immediate, accurate, and reliable surface temperature verification in critical industrial environments. Manufactured by Tempil, a leader in temperature indication technology, this stick is engineered to melt at a specific temperature of 932 degrees Fahrenheit (500 degrees Celsius) with a tolerance of +/- 1%. This level of precision makes it an indispensable tool for quality control managers, metallurgists, and maintenance professionals who require absolute certainty in thermal processing.

Unlike electronic sensors that can drift, require calibration, or fail due to battery issues, the Tempilstik relies on the immutable laws of physics. The chemical composition of the stick is formulated to change phase from solid to liquid at the exact rated temperature. This provides a binary, fail-safe visual cue: if the mark melts, the temperature has been reached. This simplicity is particularly valuable in harsh industrial settings where dust, smoke, and electrical interference might compromise digital pyrometers or infrared thermometers.

The T932 model is specifically suited for high-temperature applications such as annealing, stress relieving, and tempering. It is widely used in the fabrication of pressure vessels, piping systems, and heavy structural components where adherence to thermal specifications is mandatory for structural integrity. The product comes in a durable, adjustable metal holder that prevents breakage and allows for maximum usage of the crayon material. Furthermore, Tempilstiks are traceable to NIST standards, ensuring that your quality assurance processes remain audit-ready and compliant with major industrial codes.

For operations involving sensitive metals, the chemical purity of the indicator is paramount. Tempil ensures that their formulations are free from contaminants that could induce weld cracking or corrosion, making them safe for use on stainless steel, nuclear components, and aerospace alloys. Whether used for pre-heating verification or monitoring post-weld heat treatment (PWHT), the Tempilstik 932°F delivers consistent performance that professionals trust.