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

Reliable Heat Monitoring for Professional Welders

As a welder, hitting your temperatures accurately isn't just a suggestion—it's often a code requirement. The Tempilstik 932°F (500°C) is your go-to solution for verifying pre-heat, interpass, and post-weld heat treatment temperatures instantly. When you are working on critical joints, guessing the temperature by color or feel is a recipe for failure. With the T932, you simply stroke the workpiece during heating; the moment the chalky mark turns into a glossy liquid smear, you know you have hit exactly 932°F.

This specific temperature rating is commonly encountered in heavy-duty welding applications, including the stress relieving of certain alloy steels and the pre-heating of heavy sections to prevent cracking. The stick is incredibly easy to use: there are no buttons to press, no screens to read through a welding helmet, and no batteries to die halfway through a shift. It fits right in your pocket or rod pouch, thanks to the included metal holder which also keeps the stick from snapping in your gear bag. The holder has a pocket clip, ensuring it stays secure while you move around the shop or job site.

Why trust a Tempilstik over a cheap infrared gun? Infrared guns can be fooled by the emissivity of shiny metals (like aluminum or stainless steel) or by the arc's radiation. The Tempilstik contacts the surface directly, giving you the true temperature of the metal, not a reflection. This accuracy is why AWS D1.1, ASME B31.1, and B31.3 codes often reference temperature indicating crayons as an accepted method for thermal verification. Using the T932 demonstrates to inspectors that you are adhering to the Welding Procedure Specification (WPS) strictly.

The 932°F / 500°C stick is part of a complete system of temperature indicators. Experienced welders often carry a range of sticks to bracket their temperatures—using one stick to ensure minimum pre-heat is met and another to ensure maximum interpass temperature isn't exceeded. Rugged, reliable, and precise, the Tempilstik is the cheapest insurance policy you can buy against weld failure caused by improper thermal management.