UL94 on:
[Wikipedia]
[Google]
[Amazon]
UL 94, the Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing, is a
UL-94
is now harmonized with
an
60695-11-20
and
an
The VW-1 (vertical wire burn) rating is sometimes erroneously associated with UL 94, but it (and some other flammability tests) is described by UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords).
UL International Thermoplastics Testing Center Website
- Test methods : Combustion (fire) with animations.
The Plastics Web
- UL94 information. {{DEFAULTSORT:Ul94 Standards of the United States Fire test standards
UL 94, the Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing, is a plastic
Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adaptab ...
s flammability
A combustible material is something that can burn (i.e., ''combust'') in air. A combustible material is flammable if it ignites easily at ambient temperatures. In other words, a combustible material ignites with some effort and a flammable mat ...
standard Standard may refer to:
Symbols
* Colours, standards and guidons, kinds of military signs
* Standard (emblem), a type of a large symbol or emblem used for identification
Norms, conventions or requirements
* Standard (metrology), an object th ...
released by Underwriters Laboratories
The UL enterprise is a global safety science company headquartered in Northbrook, Illinois, composed of three organizations, UL Research Institutes, UL Standards & Engagement and UL Solutions.
Established in 1894, the UL enterprise was founded as ...
of the United States. The standard determines the material’s tendency to either extinguish or spread the flame once the specimen has been ignitedUL-94
is now harmonized with
IEC
The International Electrotechnical Commission (IEC; in French: ''Commission électrotechnique internationale'') is an international standards organization that prepares and publishes international standards for all electrical, electronic and r ...
br>60695-11-10an
60695-11-20
and
ISO
ISO is the most common abbreviation for the International Organization for Standardization.
ISO or Iso may also refer to: Business and finance
* Iso (supermarket), a chain of Danish supermarkets incorporated into the SuperBest chain in 2007
* Iso ...
br>9772an
The VW-1 (vertical wire burn) rating is sometimes erroneously associated with UL 94, but it (and some other flammability tests) is described by UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords).
Classifications
From lowest (Least flame-retardant) to highest (Most flame-retardant): *HB: slow burning on a horizontal specimen; burning rate < 76 mm/min for thickness < 3 mm or burning stops before 100 mm *V-2: burning stops within 30 seconds on a vertical specimen; drips of flaming particles are allowed. *V-1: burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed. *V-0: burning stops within 10 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed. *5VB: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may develop a hole. *5VA: burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may not develop a hole.Tests
Tests are generally conducted on a 5 × in (127 × 12.7 mm)specimen
Specimen may refer to:
Science and technology
* Sample (material), a limited quantity of something which is intended to be similar to and represent a larger amount
* Biological specimen or biospecimen, an organic specimen held by a biorepository ...
of the minimum approved thickness. For 5VA and 5VB ratings, tests are performed on both bar and plaque specimens, and the flame ignition source is approximately five times as severe as that used for testing the other materials.
Foam and films
There are other classifications that apply to low density foam materials (HF-1, HF-2, HBF) and thin films (VTM-0, VTM-1, VTM-2). *HF-2: burning stops within 3 seconds; afterglow less than 30s; burning drips allowed. *HF-1: burning stops within 2 seconds; afterglow less than 30s; no burning drips allowed.See also
*Flammability
A combustible material is something that can burn (i.e., ''combust'') in air. A combustible material is flammable if it ignites easily at ambient temperatures. In other words, a combustible material ignites with some effort and a flammable mat ...
*Flammability diagram
Flammability diagrams show the control of flammability in mixtures of fuel, oxygen and an inert gas, typically nitrogen. Mixtures of the three gasses are usually depicted in a triangular diagram, known as a ternary plot. Such diagrams are availab ...
* Fire test
References
External links
UL International Thermoplastics Testing Center Website
- Test methods : Combustion (fire) with animations.
The Plastics Web
- UL94 information. {{DEFAULTSORT:Ul94 Standards of the United States Fire test standards