This page contains a Flash digital edition of a book.
UL 94 Flame Chamber


The UL 94 tests are conducted on plastic materials to measure flammability characteristics, giving a preliminary indication of their suitability for a particular application.


FTT provides the complete solution for reliable testing for all UL 94 classifications in a robust, easy to use instrument.The tests determine 12 flame classifications of materials for specific applications:


 Six of the classifications relate to materials commonly used in manufacturing enclosures, structural parts and insulators found in consumer electronic products (5VA, 5VB,V-0,V-1,V-2, HB).


 Three of the remaining six classifications relate to low-density foam materials commonly used in fabricating speaker grills and sound-deadening material (HBF, HF-1 and HF-2).


UL 94 


Tests for Flammability of Plastic Materials for Parts in Devices and Appliances


 The last three classifications are assigned to very thin films, generally not capable of supporting themselves in a horizontal position (VTM-0,VTM-1, andVTM-2).These are usually assigned to substrates on flexible printed circuit boards.


These tests determine the material's tendency either to extinguish or to spread the flame once the specimen has been ignited.


FTT UL 94 Test Apparatus


The apparatus is supplied as a complete system incorporating all the features necessary for ease of use and safety. It conforms to all five UL 94 horizontal and vertical Bunsen burner tests and associated international standards.These are: -


 Horizontal BurningTest; UL 94 HB (ASTM D 635, IEC 60695-11-10, IEC 60707, ISO 1210).


 Vertical BurningTest: UL 94V-0,V-1, orV-2 (ASTM D 3801, IEC 60695-11-10, IEC 60707, ISO 1210).


 500W(125mm)Vertical BurningTest: 5VA or 5VB (ASTM D 5048, IEC 60695-11-20, IEC 60707, ISO 9772).


 Thin MaterialVertical BurningTest:VTM-0,VTM-1, orVTM-2 (ASTM D 4804, ISO 9773).


 Horizontal Burning Foamed MaterialTest: HBF, HF-1 or HF-2 (ASTM D 4986, ISO 9772).


 Burners (ASTM D 5025,ASTM D 5207, ISO 10093, ISO 10351)


Page 1  |  Page 2  |  Page 3  |  Page 4