Questions about Thermoset Composites?

UV Stable Sheet Molding Compound

These materials are suitable for use in applications requiring superior colorfastness & physical property retention upon exposure to UV and visible light. They are designed with both UV stable colorants and UV additive to provide superior performance in an outdoor environment.

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

UV Stable Sheet Molding Compound

S51 Series – UV Stable SMC (Low Flame and Low Smoke Available)
Sheet Molding Compound (SMC)


Glass Content 25%



Impact Strength-Izod Unnotched
Test Method: ASTM D-4812


1,070 J/m

Flexural Strength
Test Method: ASTM D-790

30,000 psi

207 MPa

Flexural Modulus
Test Method: ASTM D-790

1,500 ksi

10 GPa

Tensile Strength
Test Method: ASTM D-638

13,000 psi

90 MPa

Tensile Modulus
Test Method: ASTM D-638

2,000 ksi

14 GPa

Compressive Strength
Test Method: ASTM D-695

23,000 psi

159 MPa

Water Absorption (24 Hrs @ 23C)
Test Method: ASTM D-570

0.0 to 0.2%

Barcol Hardness
Test Method: ASTM D-2583

30 to 60

Heat Distortion Temperature @ 264 psi
Test Method: ASTM D-648



Specific Gravity
Test Method: ASTM D-792

1.7 to 1.9

Test Method: ASTM D-955

0.0 to 0.2%

Flame Spread Index
Test Method: ASTM E162


Smoke Development Index
Test Method: E84-08


Weathering Xenon Arc

Available on request

Click to download a pdf of the S51 Series 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.