Tru Fit® Fiberglass Shank Data

American & Schoen’s fully catalyzed thermosetting Tru Fit® Fiberglass Shank offers a composite with superior mechanical properties combined with a very high level of corrosion resistance. A shelf life in excess of 3 years, when stored in conditions below 140ºF and not in direct sunlight, is just one of the unique properties Tru Fit® Shank Material exhibits.

A thin plastic sleeve encases the Tru Fit® Material and allows for clean, dry ease of handling. Fast curing is another feature evident with this material.

Curing speeds using the ASF Reflector Curing System are as follows
Material Type Amperage to
Reflector Bulb		 Curing Time
TF-21, 22, 26 7.2 amps 7 seconds
TF-32 7.5 amps 8 seconds
TF-33 7.5 amps 9 seconds

Curing speeds using the ATP curing mold are as follows
Material Type Curing Tempertaures Curing Time
TF-P10N5 360ºF 15 seconds
TF-P16N10 360ºF 15 seconds
TF-P20N10 360ºF 20 seconds
TF-P28N12
360ºF
20 seconds

Curing times may vary depending upon condition of equipment, testing is recommended to insure complete curing is accomplished.

Tru Fit® Shank Properties
(the following values generated from standard production run samples)
Resin Content (uncured) 25% ± 3% by weight
Tensile Strength
(ASTM D 3039)		 150,000 psi
Tensile Modulus
(ASTM D 3039)		 6.42 x 106 psi
Flexural Modulus
(ASTM D 790)
@73ºF
@ 300ºF for 100 hrs.
@ 500ºF for 100 hrs. 		5.3 x 106 psi
5.41 x 106 psi
5.73 x 106 psI
Flexural Strength
(ASTM D 790)
@ 73ºF
@ 300ºF for 100 hrs.
@ 500ºF for 100 hrs.
143,000 psi
153,000 ps
134,000 psi
Interlaminar Shear
(ASTM D 2344)
9420 psi
Compressive Strength
(ASTM D 695 with supporting jig)
81,640 psi
Izod Impact Strength
(ASTM D 256)
>80 ft. lb./inch of notch (no break)
Linear Thermal Expansion
(ASTM D 696)
0.562 x 10-5 in./in./ °C
0.313 x 10-5 in./in./ °F
Water Absorption
(ASTM D 570)
0.089%
Barcol Hardness
(ASTM D 2583)
72.5

Note: Tru-Fit ® Material has very good adhesion and therefore we recommend that beeswax be used as a mold release agent when molding against metal surfaces.

The aforementioned property data was based on lab test samples 1/8" thick x 1" wide.

This is a technical data sheet, not a specification. While the information in this article is believed to be reliable and offered in good faith, American & Schoen Machinery Company does not guarantee its accuracy or completeness. Before using, test each product to determine its suitability for the intended use. User assumes all risks and liability while testing and using this product.