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UL-CSA-Standards Explanations for Molding Compounds

The classification of plastics and ascertaining temperature indices comprise one of the most important elements of our material testing. For many years, our products have been supervised and tested in accordance with Underwriters Laboratories Inc. (UL).

Quarterly samples are taken from the current program by a UL-commissioned tester. We then receive printouts of test results for the samples examined in the USA. In conformance with fire testing guidelines, this procedure makes it easy for the consumer to choose our decidedly practical Bakelite® molding compounds. Following this practice, the requisite approval tests for moldings and molding compounds are simplified and, in the context of quality assurance, offer the advantages of supervision by an internationally recognized testing body.

A large number of Hexion’s molding compounds are classified in accordance with UL guidelines.

Material Dsg Color Min. Thk mm Flame Class HWI HAI R T I HVTR D 495 CTI
Elec Mech
Imp Str
Epoxy Molding Compound (EP - Molding), "Bakelite", furnished as granul or powder.
EP 8412 BK 1.5 HB 1 3 155 155 155 4 2
BK 3.0 HB 1 155 155 155
Melamine/Phenolic (M/P), "Bakelite", furnished as granular material.
MP 4165 NC 1.5 V-0 - - 150 150 150
Phenolic (PF), "Bakelite", furnished as granular material, powder.
PF 31 ALL 1.5 HB - - 150 150 150
BK 3.6 V-0 - - 150 150 150
PF 31(b) ALL 1.5 V-1 1 1 150 150 150 6
ALL 3.0 V-0 1 150 150 150
PF 2400(b) ALL 1.5 V-0 1 150 150 150 1 5 4
ALL 3.0 V-0 150 150 150
PF 2736(a)(b) BK 0.46 V-0 - - 150 150 150 5 3
ALL 0.81 V-1 2 150 150 150
NC, GN, BK 0.81 V-0 2 150 150 150
ALL 1.5 V-0 2 150 150 150
PF 2874 BK 0.75 V-0 150 150 150 5 3
BK 1.5 V-0 150 150 150
BK 3.0 V-0 150 150 150
PF 4109 BK 0.84 V-0 1 1 150 150 150 4 3
BK 1.5 V-0 1 150 150 150
BK 3.0 V-0 1 150 150 150
PF 4111 BK 0.75 V-0 1 4 150 150 150 4 3
BK 1.5 V-0 4 150 150 150
BK 3.0 V-0 4 150 150 150
PF 6506(b) ALL 1.5 V-0 2 150 150 150 5
X 22 BK, BN 1.5 HB 1 - 150 150 150 4
BK 3.0 V-0 - 150 150 150
BN 3.0 V-1 - 150 150 150
Unsaturated Polyester (UP), "Bakelite", furnished as granular matterial, flakes.
UP 3415 (b) ALL 0.75 V-0 1 2 170 130 130 4
ALL 1.5 V-0 1 170 130 130
ALL 3.0 V-0 1 170 170 170
UP 3620 (b) ALL 1.5 V-0 1 105 130 130 4
ALL 3.0 V-0 105 130 130
ALL 6.0 V-0 105 130 130
UP 3720 (b) ALL 0.75 V-1 3 130 130 130 4
ALL 1.5 V-0 1 130 130 130
ALL 3.0 V-0 130 130 130
UP 804(b) BK 1.4 V-0 1 105 130 130 4
WT 1.5 V-1 1 105 130 130
GY, BN 1.5 V-0 1 105 130 130
GY, BN, BK 3.0 V-0 1 105 130 130
(a) - Optional Suffix "H".
(b) - Grade designation may be followed by a four digit number representing color, P or S indicating type of molding, a single digit representing slight color variation.
UL_sheet_FBo (pdf)
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