TEMTS0425 - Tempilstik 425°F (218°C) Surface Temperature Indicator Stick

Precision Temperature Monitoring with Tempilstik 425°F

The Tempil Tempilstik 425°F (218°C) is the definitive solution for welders, inspectors, and metal fabricators who demand accuracy and reliability in surface temperature measurement. For over 80 years, Tempil has set the standard in thermal indication, and this 425°F stick is engineered to meet the rigorous demands of industrial environments. Unlike electronic pyrometers which can struggle with emissivity issues on shiny metals or require frequent calibration, the Tempilstik relies on the immutable laws of physics. When the workpiece reaches the rated temperature of 425°F, the mark left by the stick instantly melts into a distinct liquid smear, providing an undeniable visual cue that the target temperature has been achieved.

Accuracy is paramount in welding applications where thermal cycling affects the metallurgical properties of the joint. The Tempilstik 425°F is calibrated to be accurate within +/- 1% of its rated temperature, ensuring that pre-heat and interpass temperatures are maintained strictly within procedure specifications. This level of precision helps prevent common welding defects such as hydrogen-induced cracking, warping, and loss of tensile strength. The stick is manufactured to be free of contaminants like lead, sulfur, and zinc, making it safe for use on sensitive alloys including stainless steel and nickel, where trace element contamination could lead to corrosion or failure.

Designed for the shop floor, the Tempilstik comes housed in a rugged aluminum holder with a slip-resistant grip and a convenient pocket clip. This design ensures the stick remains protected from breakage in toolboxes or pockets while being easily accessible during critical heating operations. Whether you are performing post-weld heat treatment (PWHT), annealing, or simply verifying equipment operating temperatures, the Tempilstik 425°F offers a cost-effective, maintenance-free, and robust solution that professionals trust worldwide. Each stick is traceable to NIST standards, providing the documentation and confidence needed for code-compliant work.