Balsa Core Specifications

Tecnhical Data

Balsa Core (Natural) is select quality, kiln-dried end grain balsa wood suitable for structural core material in composite sandwich construction.

Dimensions

Length	mm+4	1220
Length	in	48
Width	mm+4	610
Width	in	24
Thickness	mm+4	6.35-32
Thickness	in	¼” – 1 ¼”

Average Physical Properties

GRADE		STANDARD DENSITY BALSA CORE
Normal Density ASTM C 271	1b/ft³ Kg/m³	9.5 152
Compressive Strength ASTM C 365	psi Mpa	1,885 13.0
Compressive Modulus ASTM C 365	psi Mpa	591,600 4,080
Tensile Strength ASTM C 273	psi Mpa	1,945 13.4
Shear Strength ASTM C 273	psi Mpa	430 3.0
Shear Modulus ASTM C 273	psi Mpa	23,500 162
Thermal Conductivity	BTU.in/h.ft³.ºF W/(m.ºC)	0.44 0.063

Length	mm+4
Width	mm+4
Thickness	mm+4

NOMINAL MOISTURE CONTENT: 12%

Coefficient of Linear Expansion:

Longitudinal: 2.0 x10-6 in/in/oF 1.1 x 10-6 cm/cm oC
Radial: 8.0 x 10-6 in/in/oF 4.6 x 10-6 cm/cm oC
Tangential: 12.0 x 10-6 in/in/oF 6.8 x 10-6 cm/cm oC

Shrinkage and swelling of wood due to moisture changes will overshadow thermal expansion.

Data shown are average test values and are believed to be correct.

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Balsa Core Specifications

Tecnhical Data

Dimensions

Average Physical Properties

General Specifications

Balsa Core and Foam Comparison Charts