215 Property Value/Assessment Test & Special Remarks Acoustic Performance Acoustic insertion loss When used as part of a system ArmaSound RD 240 complies to ISO 15665 Classes B to C and Shell DEP 31.46.00.31-Gen Class D Tested according to ISO 3741 (equivalent method ASTM E1222) Classified according to ISO 15665 Sound absorption (typical values)*2 Octave band sound absorption coefficients, αs: Tested according to ISO 354. Rated according to EN ISO 11654 Thickness (mm) Frequency (Hz) Tested according to ISO 354. Rated according to EN ISO 11654 125 250 500 1000 2000 4000 6 0.01 0.03 0.07 0.18 0.39 0.74 10 0.01 0.04 0.15 0.46 0.87 0.94 15 0.03 0.11 0.38 0.80 1.03 0.89 25 0.09 0.28 0.77 1.03 0.94 0.90 Thickness (mm) 6 10 15 25 absorption coefficients, αw : αw 0.15 (H) 0.25 (H) 0.40 (H) 0.55 (H) Tested according to ISO 354 Rated according to EN ISO 11654 Class E E D C Noise reduction coefficients (NRC): NRC 0.15 0.40 0.60 0.70 Calculated according to ASTM C423-01 *1. Based on single test results which are not monitored in regular frequency. Can be used for information / reference only. *2. The octave band and 1/3rd octave band sound absorption coefficients shown in the table and chart respectively, are provided as examples which are based on single test results. The values presented can be used for information / reference only. *3. Angle test piece with a nick. *4. For environmental conditions outside the given range please contact our Customer Service Centre. *5. Shelf life (maximum storage time) is limited in order to make sure that only currently manufactured products are applied on projects. This limitation is restricted solely to storage of the product and does not affect the lifetime of product after it has been installed. All data and technical information are based on results achieved under typical application conditions. Recipients of this information should, in their own interest and responsibility, clarify with us in due time whether or not the data and information apply to the intended application area. For temperatures below -40 °C please contact our Customer Service Centre to request the corresponding technical information. Armacell takes every precaution to ensure the accuracy of the data provided in this document and all statements, technical information and recommendations contained within are believed to be correct. However, Armacell cannot guarantee that the data is 100% accurate. Furthermore, minor deviations in colour, quality and dimensions are unavoidable and in most cases do not influence the performance of the product. Armacell expressly disclaims any and all liability in relation to any results obtained or arising from any use of the product or reliance on such information. No warranty of fitness for any particular purpose, warranty of merchantability or any other warranty, expressed or implied, is made concerning the goods described or the information provided herein. All the statements and technical information within this document should be read in conjunction with the customer’s own specification. It is the responsibility of the recipient to inform all involved parties about the content of these documents. The described and recommended methods should be strictly followed. If there is a requirement to deviate from our recommendations, please contact us in advance to discuss possible suitable alternatives. Armacell will not be liable for any claim resulting from a failure to observe our specification or any other agreed solutions and from non-observance of the customer’s specification.