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Meeting the industry standards correctly is far more involved than simply choosing the right raw material. As the leading manufacturer for the cable harness and connetors industry, Yeahui has extensive experience and facilities.
UL94, the Standard for the Safety of Flammability of Plastic Materilas for Parts in Devices and Appliances testing, is a plastics flammability standars released by Underwriters Laboratories of the United States .
——From Wikipedia
The flammability rating is calculated for a test specimen as a function of the burning rate and taking account of the material thickness . UL94 differs between a horizontal burning test UL94HB and a vertical burning test UL94V.
UL94HB——Horizontal Burning Test
Test criteria | Burning rate in V | Flammability rating |
Test specimen thickness 3 - 13 mm | ≤ 40 mm/min | HB |
Test specimen thickness ‹ 3 mm | ≤ 75 mm/min | HB |
Flame is extinguished before first mark | = 0 mm/min | HB |
UL94V——Vertical Burning Test
Flammability rating UL 94 V | |||
Test criteria | V-0 | V-1 | V-2 |
Burning time of each individual test specimen (s) (after first and second flame applications) |
≤10 | ≤30 | ≤30 |
Total burning time (s) (10 flame applications) |
≤50 | ≤250 | ≤250 |
Burning and afterglow times after second flame application (s) | ≤30 | ≤60 | ≤60 |
Dripping of burning specimens (ignition of cotton batting) |
no | no | yes |
Combustion up to holding clamp (specimens completely burned) |
no | no | no |
Meeting today's standards correctly is far more involved than simply choosing the right raw material . The verification of Yeahui final product to the VW-1 flame test is a complex regularly scheduled procedure. Yeahui is characterized by custom wire harness products .
For more information on our range of UL94 rated cables, please contact our Sales Team: sales@auto-connector.com.