TEMTS0450 - Tempilstik 450F Temperature Crayon

The Welder’s Choice for Accurate Preheat and Interpass Control

Every professional welder knows that temperature control is the difference between a sound weld and a failed inspection. Cracking, warping, and metallurgical defects often stem from improper thermal management. The Tempil Tempilstik 450°F (232°C) is your first line of defense against these issues, providing a rugged, reliable, and instant method to verify preheat and interpass temperatures. When your welding procedure specification (WPS) calls for a 450°F minimum, you don't need to guess or rely on expensive, fragile pyrometers—you simply mark and weld.

Using the Tempilstik is straightforward and effective, designed specifically for the harsh environment of a welding shop. Simply stroke the workpiece with the stick before heating. As you apply heat, watch the mark; the moment it turns into a liquid smear, you know you have hit exactly 450°F (232°C). Alternatively, for checking interpass temperatures, you can stroke the hot metal periodically. If the mark melts on contact, you are at or above the temperature rating. This instant feedback allows you to maintain the optimal thermal window for your base material, preventing hydrogen-induced cracking in high-strength steels and ensuring proper fusion.

The Tempilstik 450°F is built to last. It contains a high density of temperature-sensitive compound, meaning one stick will outlast dozens of inferior markers. It comes in a sturdy metal holder that keeps the stick from breaking in your pocket or tool bag and features a pocket clip so it's always within reach. The holder also ensures you can use the entire length of the stick, maximizing value.

Trust is essential when you are under the hood. Tempil has been the global leader in temperature indication for over 80 years, and their products are backed by a guarantee of +/- 1% accuracy. This stick meets all major welding codes, including AWS and ASME, so you can sign off on your work with confidence. Whether you are working on structural steel, pressure vessels, or heavy equipment repair, the Tempilstik 450°F is an essential tool in your arsenal for producing X-ray quality welds every time.