Questions about Thermoset Composites?

Flame Resistant & Low Smoke Generation Sheet Molding Compound

This composite is certified as a low smoke toxicity material with a UL94 V-0 flame rating. It's physical and performance characteristics have been certified to meet several US Municipal Transit Authority specifications including New York City Metropolitan Transportation Authority’s Section 60 specification for Fiberglass Insulators for Contact Rail.

Please note: all of our materials are custom developed to meet your specific requirements, if you don't see a product performance metric that meets your needs, call us to discuss your specific project requirements at 317.773.1766 or email us at

Flame Resistant & Low Smoke Generation Sheet Molding Compound

46-16-60 – Transit Grade (Flame Resistant & low Smoke Generation)
Sheet Molding Compound (SMC)


Glass Content 34%


Flexural Strength
Test Method: ASTM D-790

45,800 psi

Flexural Modulus
Test Method: ASTM D-790

2.32 x 106 psi

Tensile Strength
Test Method: ASTM D-638

23,200 psi

Tensile Modulus
Test Method: ASTM D-638

2.42 x 106 psi

Impact Strength-Izod Notched
Test Method: ASTM D-256


Moisture Absorption
Test Method: ASTM D-570

0.0 to 0.14%

Coefficient of Linear Expansion
Test Method: ASTM D-696

1.23 x 10-5 in./in. °F

Dielectric Strength
Test Method: ASTM D-149

444 volts/mil

Arc Resistance
Test Method: ASTM D-495

198 Seconds

Inclined Plane Tracking Resistance
Test Method: ASTM D-2303

>1,200 mins. @2.5Kv

Flamability @ 4.07mm
Test Method: UL94


Flame Spread (radiant panel index)
Test Method: ASTM E-162


Smoke Emission - Flaming Mode
Test Method: E-662

9.0 Optical Density (4 mins)

Smoke Toxicity
Test Method: BSS 7239


0.0 ppm


20.0 ppm


0.0 ppm


10.0 ppm


1.0 ppm


1.0 ppm


0.0 ppm


9,000 ppm

Vinyl Chloride

0.0 ppm


450 ppm


0.0 ppm

Click to download a pdf of the 46-16-60 Data Sheet

The information on this sheet is a guide. The stated values reflect an average of several tests conducted on CI's goods. These values were obtained under ideal conditions and may not be replicated in any particular test, part, or application. Because the values achieved in actual parts depend considerably on part design, molding conditions, and testing methods, no guarantee is made or implied regarding values to be obtained in any specific test, part, or application. CI makes no warranty or representation as to the suitability of any of its goods for use in any application. CI relies on customer to conduct its own tests and judge for itself the suitability of CI's goods.