On the quality test made by the RCEXL factory, the ICM6 spark plug was tested on the above terms:

- Shell strength test
- Anti-tensile test
-Anti-shake test
- Airtight test @ 220ºC
- Pressure test
- Ground electrode bend test
- Special test (central electrode melting point over 2000º)
The results of the test are on my computer, but i don't have the agreement from the factory to publish.

Some final notes:
Iridium: the most corrosion-resistant metal, even at temperatures as high as 2000 °C
Have you seen corrosion on a stock or cheap chinese CM6 spark plug central electrode after a few hours running or before they fails ?
I've seen corrosion many times.

Regards