Cure Time Calculator
See how temperature changes an adhesive’s cure time — warmer roughly halves it per 10 °C, cooler roughly doubles it — starting from the base time on the data sheet.
Estimated cure time
Based on the rule of thumb that cure rate roughly doubles per 10 °C rise (Q10 ≈ 2). It’s an approximation — every adhesive has its own real cure curve and a minimum service temperature.
Why warmth speeds a cure
An adhesive cures because its molecules react and link together, and like most chemical reactions that happens faster when it’s warm and slower when it’s cold. A widely used rule of thumb puts the change at roughly a doubling of rate — and so a halving of time — for every 10 °C. Start from the cure time the data sheet gives at its reference temperature and scale it by that factor for the temperature you’ll actually cure at.
It’s an estimate, not a guarantee. Every adhesive has its own real cure curve, its own minimum temperature below which the reaction stalls, and its own limits on how much heat helps before it starts to hurt. Use the number to plan your day, then confirm the details against the manufacturer’s cure schedule.
Frequently Asked Questions
How does temperature change cure time?
Curing is a chemical reaction, and reaction rate roughly doubles for every 10 °C rise — the Q10 ≈ 2 rule. So a 24-hour cure at 25 °C becomes about 12 hours at 35 °C and about 48 hours at 15 °C. The calculator applies that factor to whatever base time and reference temperature you enter.
What base cure time should I enter?
Use the full-cure (handling or ultimate) time your adhesive quotes at its reference temperature, which is commonly 25 °C. The data sheet often lists several — set time, handling time, full cure — so pick the one you actually care about and adjust that.
Why is the temperature clamped to 5–60 °C?
The doubling rule is a reasonable approximation over a normal working band but breaks down at extremes. Below about 5 °C many epoxies effectively stop curing rather than just slowing down, and above 60 °C you risk other effects. Outside 5–60 °C the tool clamps the value and flags it, so you check the data sheet's stated limits.
Does a lower temperature ever stop the cure completely?
It can. Most adhesives have a minimum cure temperature below which they won't fully react no matter how long you wait. The doubling rule would just predict a very long time, but in reality the cure stalls, so always confirm the minimum cure temperature on the data sheet before bonding in the cold.
Is faster cure at higher temperature always better?
Not always. Heat speeds the cure but also shortens working time and can build stress in the joint if parts expand and contract unevenly. Gentle warmth is a common way to accelerate a cure, but follow the manufacturer's recommended cure schedule rather than just cranking up the heat.
Estimates for planning — not professional engineering advice; follow the adhesive’s technical data sheet for its cure schedule and minimum cure temperature.