Poor quality — stopped working within a couple of weeks.
Omar M.
✓ HVAC Technician
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Tempil MRK28031 Temperature Indicators Tempilstik 177 C/350 F
Brand:
Tempil
SKU: MRK28031
Availability:
In Stock
Ships same day if ordered by 12 pm
3.84
(43 reviews)
$22.95
/each
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Manufacturer Warranty
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Product Highlights
Warranty
Manufacturer backed
3.84 / 5
43 reviews
In Stock
Ships fast
Tempil
Authentic part
Description
The Tempil MRK28031 is a Tempilstik temperature indicator, 177°C / 350°F, 10 per case.
A Tempilstik is a crayon formulated to melt at one precise, calibrated temperature and it solves a problem that sounds trivial and is not: knowing how hot a piece of steel is.
Mark the metal with the stick. Below the rated temperature the mark stays chalky and dry. At the rating it melts to a liquid smear. That transition is the measurement, and it happens at the surface being welded rather than wherever a probe happens to touch.
Why it matters is metallurgy. Welding preheat slows the cooling rate of the heat affected zone, and cooling rate is what determines whether the steel transforms to a hard, brittle martensitic structure. Combine that hardness with the hydrogen that welding introduces and the result is hydrogen-induced cracking — cracks that appear hours or days after the weld is finished, in a joint that passed inspection. Preheat is the control, and 350°F is a common requirement on heavier sections and higher-carbon steels.
The procedure exists because the failure is delayed and invisible. Nobody sees a hydrogen crack form.
The 10 per case quantity is shop packaging.
Applications include welding preheat verification, structural steel, and pipe fabrication.
Specs
- Brand
- Tempil
- SKU
- MRK28031
- Category
- Painting & Marking Supplies
- Weight
- 0.4 lbs
- Dimensions
- 5.50 x 0.60 x 0.60
- Price
- $22.95
- Availability
- In stock
- Rating
- 3.84 / 5.0
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Product Reviews
It's okay. Does the job but nothing special for the price.
David O.
✓ Verified Buyer
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Acceptable quality. A couple of minor issues but usable.
Lisa J.
✓ Verified Buyer
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Decent build and it does the job. Happy enough to reorder.
Jennifer Q.
✓ Contractor
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Impressed with how sturdy this is. Does everything I hoped for.
Nancy T.
✓ Verified Buyer
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Feels flimsier than I hoped for the price.
Patricia A.
✓ Homeowner
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Decent build and it does the job. Happy enough to reorder.
Megan P.
✓ Verified Buyer
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Good quality and works well. A little pricey but worth it.
Thomas F.
✓ Contractor
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Works, though shipping took longer than I'd hoped.
Anthony R.
✓ Verified Buyer
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Good quality and works well. A little pricey but worth it.
Trevor Y.
✓ Facilities Manager
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Not the best fit — needed some adjusting to make it work.
Miguel M.
✓ Verified Buyer
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Wrong fit for what was listed. Frustrating experience.
George S.
✓ Verified Buyer
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Top quality — feels well built and performs even better than I expected.
Chris M.
✓ Verified Buyer
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Solid, reliable, and exactly as described. Very happy with this purchase.
Michael A.
✓ Verified Buyer
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Decent enough but the quality feels a little cheaper than the photos.
Carlos J.
✓ Verified Buyer
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It works, but the instructions were confusing.
Amanda N.
✓ Verified Buyer
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Good part, fit as expected. Delivery was on time.
Matthew Z.
✓ Homeowner
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Decent enough but the quality feels a little cheaper than the photos.
Thomas C.
✓ Maintenance Tech
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Decent build and it does the job. Happy enough to reorder.
Daniel I.
✓ Contractor
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Great value for the quality you get. This is now my go-to.
Paul O.
✓ Verified Buyer
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Okay value. Does what it says, just not impressed either way.
Mary V.
✓ Verified Buyer
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No complaints at all — did the job perfectly and feels durable.
Amanda Q.
✓ Contractor
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Exceeded my expectations. Well worth every penny.
Matthew R.
✓ Verified Buyer
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Average product. Works, but I expected a bit more.
Emily M.
✓ Homeowner
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Arrived a little damaged. Still usable but not happy about it.
Rachel H.
✓ Facilities Manager
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Solid, reliable, and exactly as described. Very happy with this purchase.
Thomas C.
✓ Maintenance Tech
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Works as described. Not perfect but solid for the price.
Paul O.
✓ Contractor
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Decent build and it does the job. Happy enough to reorder.
Melissa O.
✓ Maintenance Tech
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Perfect fit and finish. You can tell it's a quality part.
Brian C.
✓ Contractor
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Fast shipping and the product is genuinely excellent. Highly recommend.
Marcus C.
✓ Business Owner
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Outstanding. Replaced a cheaper one and the difference is night and day.
Mark R.
✓ HVAC Technician
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Works as described. Not perfect but solid for the price.
Daniel I.
✓ Maintenance Tech
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Decent build and it does the job. Happy enough to reorder.
Marcus R.
✓ Facilities Manager
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Works great so far. Only minor gripe is the price.
Lisa G.
✓ HVAC Technician
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Works as described. Not perfect but solid for the price.
Nancy G.
✓ Business Owner
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Quality is good. Does exactly what I bought it for.
Joseph Z.
✓ Verified Buyer
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It's okay. Does the job but nothing special for the price.
Carlos L.
✓ Verified Buyer
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Excellent product and great customer service. Will order again.
Michael K.
✓ Contractor
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Perfect fit and finish. You can tell it's a quality part.
Emily D.
✓ Facilities Manager
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Fast shipping and the product is genuinely excellent. Highly recommend.
Paul R.
✓ Verified Buyer
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Solid purchase. Works well, just wish it came with instructions.
Wei Y.
✓ HVAC Technician
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Top quality — feels well built and performs even better than I expected.
Luis G.
✓ Verified Buyer
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Good product. Would have given five stars but the finish had a small mark.
Chris I.
✓ Verified Buyer
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