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Standard 94, Edition 6

Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances

UL Bulletin
Standard 94, Edition 6 Edition Date: July 20, 2017 $203.00-$254.00
Summary of Topics m0746a_6_20170720_sum.html

Subject 746A (94, 746B, 746C, 746D)

Bulletin Dated: July 20, 2017

SUMMARY OF TOPICS

The following topics were discussed at the meeting of the Standards Technical Panel for Polymeric Materials:

1. Setting 1/64 inch (0.4 mm) as the Minimum Thickness Limit to Represent Thinner Thickness for the Vertical Flammability Test Evaluation for UL 94

2. Using 10 Samples Instead of 5 Samples Per Set for the UL 94 and UL 746A Flame Test

3. Update on the Development of a Proposal to Include the Arc-Resistance-to-Ignition (ARI) Test in UL 746A

4. Update on the Development of a DC Hot-Wire Ignition (HWI) Test for UL 746A

5. Update on Microscale Combustion Calorimetry (MCC) Testing for UL 746A

6. Update on the Activities of the Long-Term Thermal Aging (LTTA) Forum

7. Status of the Proposal for Handling Low Correlation Times for UL 746B

8. Update on the Development of a New Test Method for UL 746C for Evaluating Plastic Parts Made by 3D Printing Technology

9. Status of the Proposal for UL 746C for the Inclusion of Elongation as Part of (f1) and (LTTA) Investigation

10. Discussion of RTI/Schneider's Concerns About the Low Correlation Time

11. Delete Regrind Requirements in UL 746D; Include UL 746A reference in UL 746D for Regrind Program

12. Reuse of Powder in 3D Printing - Similarities with Regrind Program

13. Comment Resolution for the April 12, 2017 CSDS Preliminary Review Work Area for UL 746B

14. Discussion of Outdoor Programs for Hygroscopic Materials (PA)

15. Suggestion for Accessibility to STP Members of Historical Information on Proposals for UL Standards

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