Markal
Markal 86400 Temperature Indicator Stick 100°F welding
Temperature indicator stick marks 100 °F for welding pre-heat and interpass checks with ±1 % accuracy
- TypeWelding Parts & Supplies
- Accurate temperature monitoring with ±1 % F and ±3 % C tolerance
- Meets ANSI/ASME B31.3, B32.1, ASME Section I, III, VII and AWS D1.1 codes
- NIST-traceable calibration ensures reliable pre-heat and interpass checks
- Adjustable holder with shirt-clip keeps the stick secure during welding
- Suitable for annealing, stress-relieving and post-weld heat treating on iron and steel
Markal 86400 Temperature Indicator Stick
The Markal 86400 is a temperature-indicating stick calibrated to melt at 100 degrees Fahrenheit. It provides a visual signal when a workpiece reaches the target temperature during welding or heat-treating tasks. The stick includes a protective holder, adjustment ring and shirt clip for convenient access on the job. Accuracy is rated at plus or minus one percent Fahrenheit and plus or minus three percent Celsius.
Upgrading from guesswork or basic crayons
This stick replaces unreliable visual estimates or uncalibrated markers when precise interpass or pre-heat verification is required. The jump is worth it when code compliance demands NIST-traceable proof that a specific temperature has been reached. It supports processes such as annealing, stress-relieving and post-weld heat treating where documented temperature control is mandatory.
Limits of the ANSI/ASME B 32.1 and B 31.3 standard
The indicator is qualified to ANSI/ASME Code B 32.1 and B 31.3 as well as ASME Code Sections I, III and VII and AWS D 1.1. Its calibration applies specifically to iron and steel substrates. Users must verify that the base material and code requirements match these listed standards before relying on the stick for acceptance criteria.
Highlights
- Accurate temperature monitoring with ±1 % F and ±3 % C tolerance
- Meets ANSI/ASME B31.3, B32.1, ASME Section I, III, VII and AWS D1.1 codes
- NIST-traceable calibration ensures reliable pre-heat and interpass checks
- Adjustable holder with shirt-clip keeps the stick secure during welding
- Suitable for annealing, stress-relieving and post-weld heat treating on iron and steel
Specifications
| Brand | MARKAL |
|---|---|
| Type | Welding Parts & Supplies |
Questions about this item
What holder comes with the Markal 86400 stick for mounting?
The package includes a protective holder, an adjustment ring and a shirt-clip for carrying the stick on site.
How do you apply the Markal 86400 indicator to a joint, and what step is often missed?
Mark the surface with the stick; the missed step is waiting for the mark to melt, which confirms the part has reached 100 °F.
When does the Markal 86400 stick need to be replaced?
Replace the stick once the temperature-sensitive tip has been fully consumed or if the mark no longer melts at the rated 100 °F point.
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