Information UL 94 HB – Plastic material

Test method: UL 94 Flame spread in plastic materials used in Devices and Appliances.

Area of use

The method is intended to be used as a preliminary indication for fire behavior of products with respect to initability.

The method measures the horizontal burning rate of the product.


Exempel of products that can be tested according to this method

Plastic material, rubber material and other non metallic materials.


Material needed when testing

Complete test serie 6 specimens with dimensions
125 mm x 13 mm. Max thickness 13 mm. 
One orientating test 

2 specimens with dimensions

125 mm x 13 mm. Max thickness 13 mm.

Test procedure

The test specimen is placed horizontal in a test chamber. The bunsen burner is applied with a 45° angle to the specimen for 30 seconds, or until the flames reaches 25 mm mark. Noted during test is the burnt length in the material and time for the flames to move along in the material. The results (burning rate) are given in mm/minute

Related Information

Contact Persons

Anna Sandinge

Phone: +46 10 516 59 73

Per Thureson

Phone: +46 10 516 50 83

RISE Research Institutes of Sweden, Phone 010-516 50 00, E-mail

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