Permatex

Steel Weld Epoxy

Two-part (all sizes) · US · not yet reviewed

Check your container: This countdown is for the Two-part (all sizes) variant. Similar-looking versions may have different times.

How long does Permatex Steel Weld Epoxy take to dry?

Short answer

Set / hardened: 8–10 minutes after application.
Full cure: 1 day after application.
Used for structural applications: elapsed time alone can’t confirm it’s ready. Inspect or test before loading.
Epoxy

Bond-strength path

Assembly, handling and full load are different stages

1 · AssembleClean, fit and apply the Two-part (all sizes) version correctly.
2 · HoldKeep the joint undisturbed through its set or clamp stage.
3 · LoadUse full cure—not surface firmness—before demanding use.

Calculate bond readiness

When was the bond assembled?
Conditions that affect drying
Where?
Thickness

Stated times

  • Working time ends4–5 minutes
  • Set / hardened8–10 minutes
  • Full cure1 day

From Permatex data sheet · checked 2026-10-25. Anything not listed isn’t stated by the manufacturer.

Manufacturer website: permatex.com

Conditions & fine print
  • Stated conditions: Not stated in the data sheet
  • Not recommended for pure oxygen or oxygen-rich systems, or as an adhesive for chlorine or strong oxidizers. The data sheet gives no correction factor for temperature.
  • Region US. Formulas can differ between countries; check your container.
  • Working time ends: Mix 1:1 for at least one minute.
  • Entered from the manufacturer source; second review pending. Report outdated information
  • Actual results depend on preparation, thickness, ventilation, temperature, humidity, mixing and substrate.

Using this specific product

Permatex Steel Weld Epoxy is listed here as the Two-part (all sizes) version for metal repair and steel. For mixing and curing epoxy, the useful question is not simply whether the surface looks finished—it is whether the exact next-action milestone shown above has been reached.

Before you start

  • Confirm the package says Two-part (all sizes); related versions can use different timing.
  • For metal repair and steel, pay particular attention to mix ratio, batch size, temperature and pour thickness.
  • Mix 1:1 for at least one minute.

How to check readiness

Check the coolest or thickest part for firmness before sanding, demolding or loading. Working time is 4 to 5 minutes. Fixture time is 8 to 10 minutes. Allow the bond to set for the fixture time before handling or moving. Reserve full cure for demanding use, chemicals, washing, immersion or load—not merely gentle handling.

Avoid this mistake

A larger batch can heat faster while a thin film may cure more slowly.

Questions

How long does this product take to dry?

Permatex states: Working time is 4 to 5 minutes. Conditions: Mix 1:1 for at least one minute.. Fixture time is 8 to 10 minutes. Allow the bond to set for the fixture time before handling or moving. Product fully cures in 24 hours. These are the manufacturer’s stated times, not a guarantee.

How long does this product take to fully cure?

Permatex states: Product fully cures in 24 hours. These are the manufacturer’s stated times, not a guarantee.

How long do I have to work with this product?

Permatex states: Working time is 4 to 5 minutes. Conditions: Mix 1:1 for at least one minute.. These are the manufacturer’s stated times, not a guarantee.

What affects how long this product takes to dry or cure?

Not recommended for pure oxygen or oxygen-rich systems, or as an adhesive for chlorine or strong oxidizers. The data sheet gives no correction factor for temperature. Follow the product label for your conditions.

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