UL 94 Safety Standard: Ensuring Flammability Resistance in Plastics

UL 94, established by Underwriters Laboratories (UL), evaluates how well plastic materials resist ignition and sustain combustion when exposed to flames. This standard is crucial for industries like electronics, automotive, and construction, where flame-retardant thermoplastics play a vital role.

Test Methods for UL 94 Classification

Horizontal Burn Test (HB)

The sample is clamped horizontally at a 45-degree angle, with a burner positioned at a specific distance. If the specimen reaches a certain mark within a set time, the burner is removed.

50W Vertical Flame Test

A burner is ignited under the sample for a specified time, and the time for ignition and glow after flame removal is recorded.

500W Vertical Combustion Test

Involves exposing the specimen to flames multiple times, recording any damage or holes after each exposure.

Benefits of UL 94 Compliance

Compliance with UL 94 standards ensures product safety, reliability, and marketability by reducing fire hazards and meeting strict safety criteria. It is often a mandatory requirement in industries such as electronics, construction, and transportation.

Materials with UL 94 Certification

UL 94 Certified Injection Molding Materials

When it comes to UL 94 certified injection molding materials, you have a variety of options to choose from. Some of the materials that are currently certified include ABS, PC, ABS/PC, PP, PA, PEEK, and more.

If you need your product to be UL 94 compliant, you can easily indicate this requirement when placing your order. Alternatively, you can get in touch with mila@wellcircuits.com for assistance in selecting the most suitable material for your specific needs.