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WallWrap Fire Rating ASTM E648
ASTM E648-19a Standard test method for critical radiant flux of floor- covering systems using a radiant heat energy source on "Caviar" wallwrap
The specimen was evaluated in accordance with the following:
ASTM E648-19A, Standard Test Method for Critical Radiant Flux of Floor-Covering Systems Using a Radiant Heat Energy Source
Test Specimen Description
|Specimen was sent by client in a sheet. Specimen was then cut to the dimensions required by the standard (41in x 9in() to fit into the test frame) by Intertek
|04/30/2020 (Samples received in good condition)
|Intertek Sample Tracker Number
|69.8±5.4°F and 50±5% relative humidity
|73°F and 63-65% r.h.
Test Overview & Procedure
This procedure provides a way of measuring critical radiant flux (the level of incident radiant heat energy on a floor covering system at the most distant flame-out point, reported as W/cm2) of horizontally mounted floor-covering systems exposed to a flaming ignition source while being exposed to radiant heat energy from a panel with approximately a 30° angle from the horizontal. The radiant flux ranges from 1.09 W/cm2 at the 100 mm mark to 0.13 W/cm2 at the 900 mm mark.
At least three specimens shall be tested. The specimens are conditioned at 69.8 ± 5.4°F and a relative humidity of 50 ± 5 % for a minimum of 48 hours. Following the ASTM E648-19A calibration procedures, the first specimen was loaded into the test chamber. After a 5 minute pre-heat time, the pilot flame was placed into contact with the specimen at the 0 mm mark. This pilot flame is to remain in contact with the specimen for 5 minutes, then removed. If the specimen does not propagate flame during the 5 minute pilot flame contact, then the test is terminated. For specimens that do propagate flame, the test is continued until the flame goes out. The distance to the farthest flame-out point is noted, which is then used to determine the critical radiant flux, based on a radiant heat energy flux profile curve of the apparatus obtained during calibration.
|Maximum Distance (mm)
|Time to Max. Distance (min.)
|Critical Radiant Flux (W/cm²)
|Time to All Flame Out (min.)
Requirements For Classes
ASTM E648 does not have a pass/fail criteria. In most cases the codes that require this testing will indicate criteria for the critical radiant heat flux as categorized by Class I or Class II. The requirements for these classes will depend on the code that is applicable for the product and/or installation.
For example, NFPA 101 Life Safety Code (2015 edition) states that:
10.2.7.3* Interior floor finishes shall be classified in accordance with 10.2.7.4, based on test results from NFPA 253, Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source, or ASTM E 648,
Standard Test Method for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source.
10.2.7.4.1 Class I Interior Floor Finish. Class I interior floor finish shall have a critical radiant flux of not less than 0.45 W/cm2, as determined by the test described in 10.2.7.3.
10.2.7.4.2 Class II Interior Floor Finish. Class II interior floor finish shall have a critical radiant flux of not less than 0.22 W/cm2, but less than 0.45 W/cm2, as determined by the test described in 10.2.7.3.
The requirements for the above mentioned classes will depend on the code that is applicable for the product and/or installation.Download Full Report
Test performed and certified by: