UL 94, the Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing, is a plastics flammability standard released by Underwriters Laboratories of the United States. [1]

2020年7月2日 · You have most likely heard of the UL 94V-0 standard but do you really know what it is? We offer a wide variety of hoses that meet or exceed UL 94V-0 requirements, but we have found that not everyone understands the importance of this rating.

2019年7月15日 · Two UL 94 ratings that code officials commonly run across are HB and V (V-0, V-1, or V-2). These ratings are established using small-scale tests in which approximately 5 by ½ inch samples are subject to a ¾ inch, 50W tirrel burner flame ignition source.

UL 94 is a safety standard to determine the flammability of plastic materials. This test is released by Underwriters Laboratories of the United States. It measures: The ability of the plastic part to extinguish or spread the flame after ignition.

UL 94 also describes a method in which the test flame is applied for up to five applications in testing for a 5VA or 5VB classification. These small-scale tests measure the propensity of a material to extinguish or spread flames once it becomes ignited.

The UL 94 Standard provides a method for rating the ignition characteristics of plastic materials. Two UL 94 ratings that code oficials commonly run across are HB and V (V-0, V-1, or V-2).

2021年6月9日 · UL 94 V-0, V-1, and V-2 flammability standards ratings are generally acceptable for portable, unattended, intermittent-duty household appliances like coffee machines or stand mixers.

2022年12月8日 · 94V-0 is a rating given to materials used in the manufacturing of printed circuit boards (PCBs). It is a flame retardancy rating that indicates the material’s ability to resist catching fire and to self-extinguish if it does catch fire.

Five specimens of each thickness are tested after conditioning for 48 hours at 23 degrees C and 50% RH. Each specimen is supported such that its lower end is 10 mm above Bunsen burner tube. A blue 20 mm high flame is applied to the center of the lower edge of the specimen for 10 seconds and removed.

Five specimens of each thickness are tested after conditioning for 48 hours at 23 degrees C and 50% RH. Each specimen is supported such that its lower end is 10 mm above Bunsen burner tube. A blue 20 mm high flame is applied to the center of the lower edge of the specimen for 10 seconds and removed.