These requirements cover a program applicable to parts that have been molded or fabricated from polymeric material and describe the material-identity control system intended to provide traceability of the material used for the polymeric parts through the handling@ molding or fabrication@ and shipping operations. Guidelines are also provided for acceptable blending or simple compounding operations that may affect risk of fire@ electrical shock@ or injury to persons. This program is intended to provide quick verification of material identification by means of an identification marking on the part@ or on the carton in which the part is shipped@ or in a specification sheet placed within the shipping carton with the part. This program is intended to eliminate the uncertainty of the polymeric material identity in the end-use product and to reduce the possibility of field problems caused by the use of incorrect compounds. The polymeric-material identity program covered by this standard is intended to provide traceability for molded finished parts (that is@ enclosures@ internal equipment parts@ and the like) that are to be factory-installed components of other equipment where the acceptability of the combination is to be determined. This program is not intended for manufacturing operations that add colorants or other additives to plastic materials using hot-compounding techniques that subject the material to an additional heat history and ship pellets as finished parts. This program is not intended to provide traceability for polymeric materials that are intended for field installation. Requirements and methods for the evaluation of metallized or painted parts are contained in the Standard for Polymeric Materials - Use in Electrical Equipment Evaluations@ UL 746C@ and the requirements for Polymeric Materials - Short Term Property Evaluations@ UL 746A. Reference should be made to the applicable individual product standard for performance requirements covering the part or assembly. A product that contains features@ characteristics@ components@ materials@ or systems new or different from those covered by the requirements in this standard@ and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features@ characteristics@ components@ materials@ or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development@ revision@ and implementation of this standard. 1.6 revised June 14@ 2000
UL 746D BULLETIN-2008 history
2023UL 746D BULLETIN-2023 UL Standard for Safety Polymeric Materials - Fabricated Parts
1970UL 746D-2021 Polymeric materials; fabricated parts
2018UL 746D BULLETIN-2018 UL Standard for Safety Polymeric Materials - Fabricated Parts (COMMENTS DUE: September 14@ 2018)
2018UL 746D-2018 Polymeric Materials - Fabricated Parts
2017UL 746D BULLETIN-2017 UL Standard for Safety Polymeric Materials - Fabricated Parts (COMMENTS DUE: October 11@ 2017)
2015UL 746D BULLETIN-2015 UL Standard for Safety Polymeric Materials - Fabricated Parts
2014UL 746D BULLETIN-2014 UL Standard for Safety Polymeric Materials - Fabricated Parts (COMMENTS DUE: March 21@ 2014)
2013UL 746D BULLETIN-2013 UL Standard for Safety Polymeric Materials - Fabricated Parts
2012UL 746D BULLETIN-2012 UL Standard for Safety Polymeric Materials - Fabricated Parts (COMMENTS DUE: October 29@ 2012)
2012UL 746D-2012 UL Standard for Safety Polymeric Materials - Fabricated Parts (Seventh Edition; Reprint with Revisions Through and Including December 10@ 2014)
2011UL 746D BULLETIN-2011 UL Standard for Safety Polymeric Materials - Fabricated Parts
2008UL 746D BULLETIN-2008 UL Standard for Safety Polymeric Materials - Fabricated Parts
1998UL 746D-1998 UL Standard for Safety Polymeric Materials - Fabricated Parts Sixth Edition; Reprint with Revisions Through and Including December 12, 2003
1993UL 746D-1993 Polymeric materials; fabricated parts