The perforated sandwich panel with corrosion class RC5
The acoustic sandwich panels from Metecno (Hipertec Wall Sound and Metfiber Eco Wall Sound) can be used outdoors. Our products have been used for over 15 years in outdoor conditions. Yet due to the perforation the corrosion class RC3 of the galvanized steel could not be guaranteed.
To be able to deliver a perforated acoustic sandwich panel with a tested corrosion class RC5 we developed Metecno RC5 high.
With this product we can deliver panels with an improved corrosion resistance, an extended lifespan and enhanced performance even in challenging outdoor environments. Besides our solutions with perforated stainless steel or perforated anodized aluminum we now have a more economical solution.
To prove this, we have done a cyclic ageing test has been performed conform ISO 12944-6 by an independent laboratory (M2lab). The laboratory advised us to do a cyclic ageing test. This cyclic ageing test is closer to reality than a standard salt spray test.
Samples Metecno RC5 used for the cyclic ageing test.
What is the Cyclic Ageing test 12944-6 Annex B?
It consists of 10 cycles, one cycle is:
- 72 hours: 8 cycles of UV (4 hours) – condensation (4 hours)
- 72 hours Salt spray test
- 24 exposures to low temperature (-20 °C)
The Metecno RC5 product range meets the tested performance requirements of ISO 12944-6 C5 High. The full report is, as our acoustic or fire reports, available upon request, please send a mail.
More information about our acoustic services and products could be found at www.metecno-sound.com