Tamshell
Material Data Sheet

Material: NEMA Grade G -11

Grade G-11 is constructed from a continuous filament woven glass fabric with an epoxy resin binder. The resin system is not flame retardant, but has greater temperature resistance than Grade G-10. Exhibits extremely high mechanical strengths at room temperature, and maintains a minimum of 30.0 ksi flexural strength at 150 degrees C. Good dielectric loss and electric strength properties under both dry and humid conditions.

Normally used for electrical and electronic insulation where low moisture absorption, good chemical resistance, and high physical strength is needed. Heat resistance is higher than G-10 where physical stress is imposed. Not recommended for wear applications. Available in sheets, rolled tubes and molded rods.

Physical Properties Value Units



Density 0.07 lb/in³
Water Absorption 0.2 %



Mechanical Properties






Hardness, Rockwell M 112
Tensile Strength @ Break Crosswise 37,000 psi
Tensile Strength @ Break Lengthwise 43,000 psi
Flexural Modulus Crosswise 2,700 ksi
Flexural Modulus Lengthwise 3,000 ksi
Flexural Strength Crosswise 70,000 psi
Flexural Strength Lengthwise 80,000 psi
Compressive Strength 63,000 psi
Izod Impact, Notched Crosswise 12 ft-lb/in
Izod Impact, Notched Lengthwise 9 ft-lb/in





Electrical Properties






Dielectric Constant 4.5
Dielectric Strength 900 V/mil
Dissipation Factor 0.02
Arc Resistance 120 sec



Thermal Properties






CTE, linear 68°F 7.2 µin/in-°F
CTE, linear 20°C Transverse to Flow 8.33 µin/in-°F
Thermal Conductivity 2 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 329° °F
Flammability, UL94

     
*The values shown in these and the following charts are typical, average properties. Actual values may differ due to variations in resin formulations and processing methods. These values are obtained from sources believed to be reliable, including the resin manufactures, converters and other published sources. However, they should not be used for specification or design purposes.
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