The so-called “85/85 Test” is a widely recognised benchmark across electronics, sensors, and advanced systems, designed to accelerate failure mechanisms that may occur in real-world conditions involving moisture, heat, and prolonged exposure.

(Karlsruhe, Germany, 12th November 2025) Horizon Microtechnologies has successfully demonstrated that its passivated, metallised 3D-printed parts can withstand one of the most demanding environmental challenges in electronics reliability testing, 500 hours of constant 85°C and 85% relative humidity.

The so-called "85/85 Test" is a widely recognised benchmark across electronics, sensors, and advanced systems, designed to accelerate failure mechanisms that may occur in real-world conditions involving moisture, heat, and prolonged exposure. Historically, coated polymer parts have struggled under these conditions, showing delamination, corrosion, or loss of function.
Horizon's test results tell a different story. "Our proprietary passivation process preserved coated parts with no change in appearance or integrity after 500 hours. This result demonstrate the survival of protectively coated metallised 3D printed parts in the 85/85 test, and shows that coated polymer parts can meet reliability demands once thought beyond their reach." says CEO Andreas Frölich.

"Transparency is key," Frölich adds. "We're not just announcing wins, we're building confidence. This test proves we have a solution that works, and we're working hard to make it production-ready at scale."

The significance of passing the 85/85 test extends beyond just environmental survivability. It opens doors for the use of coated polymer AM parts in automotive sensors, aerospace electronics, and industrial controls and embedded devices.

These applications often require long-term reliability in enclosures or housings where fluctuating temperature and humidity are a given. Horizon's success shifts the narrative. Coated polymer parts are no longer a "maybe", they are a real option.

This milestone adds to a growing list of successful tests, including temperature shock, radiation resistance, and outgassing validation. The campaign, structured in phases, is part of Horizon's broader commitment to proving that its metallised micro AM components are ready for the world's most demanding environments.

Horizon continues to lead the charge in restoring industry confidence in coated 3D-printed parts through real data, rigorous testing, and a drive to engineer what others said was impossible.
www.horizonmicrotechnologies.com