This test is meant to measure and describe the flammability of plastic materials in response to heat and flame.
Best ul rated sheet plastics.
The standard classifies plastics according to how they burn in various orientations and part thicknesses from the lowest flame retardant to most flame retardant in six different classifications.
Ul 94 is a plastics flammability standard released by the underwriters laboratories usa.
That is dramatic when compared to 60 seconds in a fire.
There are two separate tests and ratings for ul 94.
Some high performance plastics can be classified as flame resistant plastic flame retardant plastic non flamable plastic or inherently self extinguishing making them suitable for use where fire protection is an issue.
Overview of ul 94 flame classifications.
Ul 94 the standard for safety of flammability of plastic materials for parts in devices and appliances testing there are two types of pre selection test programs conducted on plastic materials to measure flammability characteristics.
These small scale tests measure the propensity of a material to extinguish or spread flames once it becomes.
Ul 94 v 0 best of the best heavy duty fire retardant.
The first determines the material s tendency either to extinguish or to spread the flame once the specimen has been ignited.
Ul 94 rating ul subject 94 is a small scale flammability test.