DIAB TBR® 8 Multifunctional Polymer Core Material

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DIAB TBR® 8 Multifunctional Polymer Core Material (discontinued **)
Categories:	Other Engineering Material; Composite Core Material; Polymer; Renewable/Recycled Polymer
Material Notes:	TBR® is a multifunctional polymer core designed for hard points within sandwich structures where through-bolting or point-loading would normally cause local crushing of low density sandwich cores. TBR® provides strength and performance for applications where there is a need for hard points and through bolting while maintaining lightweight construction. Typical applications include bolt transoms (outboard and inboard/outboard), deck cleat and railing bases winch pads, strut bases, and thru-hull pads. TBR® is available in three densities as standard sheets or fabricated kits. TBR® may contain up to 10% recycled content. It has a highly imidized chemical structure within its inter-penetrating polymer network. TBR® has a coarse cell structure designed for increased mechanical adhesion. Information provided by DIAB, Inc.
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Physical Properties	Metric	English	Comments

Density	0.128 g/cc	0.00463 lb/in³	Nominal
	0.115 - 0.154 g/cc	0.00417 - 0.00556 lb/in³	Tolerance from nominal of -10%/+20%; ASTM D1622

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	3.79 MPa	550 psi	ASTM D1623
Elongation at Break	11.5 %	11.5 %	Shear Strain; ASTM C273
Compressive Strength	2.55 MPa	370 psi	ASTM D1621
Compressive Modulus	0.172 GPa	25.0 ksi	ASTM D1621-B
Poissons Ratio	0.32	0.32
Shear Modulus	0.0469 GPa	6.80 ksi	ASTM C273
Shear Strength	1.90 MPa	275 psi	ASTM C273

Thermal Properties	Metric	English	Comments
CTE, linear	36.0 µm/m-°C @Temperature 20.0 °C	20.0 µin/in-°F @Temperature 68.0 °F	ASTM D696
Maximum Service Temperature, Air	82.2 °C	180 °F	Continuous
Minimum Service Temperature, Air	-198.3 °C	-324.9 °F	Continuous

Processing Properties	Metric	English	Comments
Processing Temperature	<= 90.0 °C	<= 194 °F

Descriptive Properties
Water Absorption	0.006 lb/ft²		ASTM D2842 at 72°F

**
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PDIAB54 / 29831

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