DIAB ProBalsa® HW Heavy Weight Balsa Wood

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DIAB ProBalsa® HW Heavy Weight Balsa Wood (discontinued **)
Categories:	Other Engineering Material; Composite Core Material; Wood and Natural Products; Wood
Material Notes:	ProBalsa is a high quality composite core material made from end-grain balsa wood. The end grain, micro-honeycomb structure offers exceptional shear and compressive strength. In addition ProBalsa offers good fatigue properties, high thermal and sound insulation and low FST properties. ProBalsa is best suited for dynamic structures where performance and efficiency are paramount. All ProBalsa core materials are particularly easy to work using conventional woodworking tools. They can be drilled, milled, turned and sawn to close tolerances. ProBalsa can be used in hand lay-up, vacuum bag and infusion applications. It is also suitable for elevated temperature cure prepreg systems. ProBalsa Plus is a premium version of ProBalsa where the surface is micro sanded and treated with a special surface primer to reduce resin absorption during lamination. Information Provided by DIAB
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Physical Properties	Original Value	Comments

Density	0.220 g/cc	ASTM C271
Moisture Absorption at Equilibrium	12 %

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	20.6 MPa	ASTM C297
Compressive Strength	21.9 MPa	ASTM C365
Compressive Modulus	6840 MPa	ASTM C365
Shear Modulus	0.237 GPa	ASTM C273
Shear Strength	4.50 MPa	ASTM C273

Thermal Properties	Original Value	Comments
CTE, linear	1.10 µm/m-°C	Longitudinal (Moisture changes are more impactful than CTE); ASTM D696
	4.60 µm/m-°C	Radial (Moisture changes are more impactful than CTE); ASTM D696
	6.80 µm/m-°C	Tangential (Moisture changes are more impactful than CTE); ASTM D696
Thermal Conductivity	0.0860 W/m-K @Temperature 10.0 °C	ASTM C377
Insulation R Value	0.80 @Thickness 12.0 mm	Based on +10°K factor
	1.7 @Thickness 25.0 mm	Based on +10°K factor
	3.3 @Thickness 51.0 mm	Based on +10°K factor

**
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PDIAA938 / 99176

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