There are various standards which classify the flammability of plastics.
Best ul rated sheet plastics.
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.
Ul 94 rating ul subject 94 is a small scale flammability test.
This test is meant to measure and describe the flammability of plastic materials in response to heat and flame.
There are two separate tests and ratings for ul 94.
When the utmost in fire safety is a must consider the flame retardant corrugated boards that pass the ul 94 v 0 because when time counts these boards will stop burning in 10 seconds with no flaming drips.
The first determines the material s tendency either to extinguish or to spread the flame once the specimen has been ignited.
These materials consist of a sandwich type construction a metal and a plastic and have been tested for flammability to determine compliance with ul 94 the standard for safety of flammability of plastic materials for parts in devices and appliances testing only.
These small scale tests measure the propensity of a material to extinguish or spread flames once it becomes.
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.
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.
Ul 94 is a plastics flammability standard released by the underwriters laboratories usa.