®

GM--TDS-103®

BALTEK SB is a core material produced from select kiln-dried balsa
wood in the ‘end-grain’ configuration. It has extremely high strength andstiffness to weight ratios, and achieves an excellent bond with all typesof resins and adhesives. It is compatible with a variety of manufacturing
processes and is resistant to temperature changes, or exposure to fire,or chemicals such as styrene.
®

BALTEK SB is an ideal core material for an extensive range of applications subjected to static or dynamic
loads in service. All while being a renewable resource.

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Outstanding strength and stiffness to weight ratios
First-class, select grade lumber
Ecological productBroadest range of available balsa densities worldwide
Certified for a range of applications by DNV, Germanischer Lloyd, Lloyd's Register, American Bureau ofShipping and Korean Register
Excellent fatigue and impact resistanceFulfills most FST (flame, smoke, toxicity) requirements
Good sound and thermal insulation
Extremely wide operating temperature range (-212 °C to +163 °C (-414 °F to +325 °F)

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Marine: Hulls, decks, bulkheads, superstructures, interiors, tooling/molds
Road and Rail: Floors, roofs, side skirts, front-ends, doors, interiors, covers
Wind energy: Rotor blades (shear webs and shells), nacelles, spinners
Industrial: Tanks, containers, architectural panels, impact limiters, sporting goods
Aerospace: Floors, cargo pallets, cargo containers, bulkheads, general aviation
Defense: Naval vessels, containers, cargo pallets, shelters, ballistic panels

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Adhesive bonding
Compression molding
Contact molding (hand/spray)
Pre-preg processing (up to 180 °C, 355 °F)
Resin injection (RTM)
Vacuum infusionwww.airexbaltekbanova.com
Europe ‫ ׀‬Middle East ‫ ׀‬India ‫ ׀‬Africa

North America ‫ ׀‬South AmericaAsia ‫ ׀‬Australia ‫ ׀‬New ZealandAirex AG5643 Sins, Switzerland
T +41 41 789 66 00 ‫ ׀‬F +41 41 789 66 60
corematerials@3AComposites.com

Baltek Inc.
High Point, NC 27261, USA
T +1 336 398 1900 ‫ ׀‬F +1 336 398 1901
corematerials.americas@3AComposites.com

3A Composites (China) Ltd.
201201 Shanghai, China
T +86 21 585 86 006 ‫ ׀‬F +86 21 338 27 298corematerials.asia@3AComposites.com

Typical properties for BALTEK SBUnit(metric)

SB.50

SB.80

SB.100SB.150Apparent nominal density

ASTM C-271

kg/m³

109132148285

Minimum sheet density

ASTM C-271

kg/m³

84

113

136

248

Compressive strength
perpendicular to the plane

ISO 844

N/mm²

5.5

7.7

9.2

22

Compressive modulus
perpendicular to the plane

ISO 844

N/mm²

1616

2187

2526

4428

Tensile strength perpendicular
to the plane (polyester)

ASTM C-297

N/mm²

3.9

5.0

5.7

12.2

Tensile strength perpendicular
to the plane (epoxy)

ASTM C-297

N/mm²910.9

1218.3Tensile modulus perpendicular
to the plane

ASTM C-297

N/mm²1682

2337

2791

6604

1

ASTM C-273

N/mm²

1.8

2.3

2.6

5.2

Shear modulus

ASTM C-273

N/mm²136

166

187

362

Thermal conductivity
at room temperature

ASTM C-177

W/m*K

0.048

0.059

0.066

0.084

Width

mm ± 5610

610

610

610

®

Shear strength

Standard sheet
ContourKore (CK)

Lengthmm ± 101220

1220

1220

1220

Thickness

mm +0.25 -0.75

4.7 to 76

4.7 to 76

4.7 to 76

6 to 76

Thickness

mm +0.25 -0.75

4.7 to 50

4.7 to 50

4.7 to 50

6 to 50

Please specify Lamprep surface treatment or AL600 coating (decreases porosity and increases bond strength) whenordering.
Perforations (breether holes), grooves and other finishing options are also available. Other sheet sizes are available
on request.
1)

All samples tested @ ¾” thick. Please apply appropriate shear strength reduction factors for greater thickness.

Fire Performance+

Standard

Aircraft

FAR 25.853

RailRail
Rail+

ASTM E 162

SB.50

SB.100SB.150

Flammability

PassedPassedNot tested

Smoke densityPassed

PassedToxicity

PassedPassedHeat release

FailedFailedFlame spread factor

2.22

2.22

Heat Evolution factor

6.24

6.24

Flame spread index

1414

ASTM E 662 (non-flamingmode)

Ds @ 90 sec

33Ds @ 4min

3939

ASTM E 662 (flaming mode)

Ds @ 90 sec

88

Ds @ 4min

2525

Not tested

Not tested
Not tested

All samples tested with phenolic resin FRP skins.

The data provided gives approximate values for the nominal density. Due to density variations these values can be lower than
indicated above. Minimum values to calculate sandwich constructions can be provided upon request. The information contained
herein is believed to be correct and to correspond to the latest state of scientific and technical knowledge. However, nowarranty is made, either expressed or implied, regarding its accuracy or the results to be obtained from the use of suchinformation. No statement is intended or should be construed as a recommendation to infringe any existing patent.
GM--TDS-103
www.airexbaltekbanova.com

®

Typical properties for BALTEK SB

Unit(imperial)

SB.50

SB.80

SB.100SB.150Nominal sheet density

ASTM C-271

lb/ft³

6.8

8.2

9.3

17.8

Minimum sheet density

ASTM C-271

lb/ft³

5.2

7.1

8.5

15.5

Compressive strength
perpendicular to the plane

ISO 844

psi

798

1117

1336

3184

Compressive modulus
perpendicular to the plane

ISO 844psi

234400317198366200642000Tensile strength perpendicular
to the plane (polyester)

ASTM C-297

psi

558

725

831

1770

Tensile strength perpendicular
to the plane (epoxy)

ASTM C-297

psi

1299

1581

1737

2654

Tensile modulus perpendicular
to the plane

ASTM C-297

psi243900

338954404700957600

1

ASTM C-273

psi267334378761

Shear modulus

ASTM C-273

psi

19700

24076

27100

52600

Thermal conductivity
at room temperature

ASTM C-177

BTU.in/ft .hr.°F

20.331

0.407

0.456

0.581

Width

in ± 3/16

2424

24

24

Shear strength

Standard sheet
ContourKore (CK)

3

Lengthin ± /848

48

Thickness

in +0.01 -0.03

3/16 to 348
3/16 to 348
3/16 to 3¼ to 3Thickness

in +0.01 -0.03

33

3¼ to 2/16 to 2/16 to 2/16 to 2

Please specify Lamprep surface treatment or AL600 coating (decreases porosity and increases bond strength) whenordering.
Perforations (breether holes), grooves and other finishing options are also available. Other sheet sizes are available
on request.
1)

All samples tested @ ¾” thick. Please apply appropriate shear strength reduction factors for greater thickness.

Fire Performance+

Standard

Aircraft

FAR 25.853

RailRailRail+ASTM E 162

SB.50

SB.100SB.150

Flammability

PassedPassedNot tested

Smoke density

PassedPassedToxicity

PassedPassedHeat release

FailedFailedFlame spread factor

2.22

2.22

Heat Evolution factor

6.24

6.24

Flame spread index

1414

ASTM E 662 (non-flamingmode)

Ds @ 90 sec

33

Ds @ 4min

3939

ASTM E 662 (flaming mode)

Ds @ 90 sec

88

Ds @ 4min

2525

Not tested

Not tested
Not tested

All samples tested with phenolic resin FRP skins.

The data provided gives approximate values for the nominal density. Due to density variations these values can be lower thanindicated above. Minimum values to calculate sandwich constructions can be provided upon request. The information contained
herein is believed to be correct and to correspond to the latest state of scientific and technical knowledge. However, nowarranty is made, either expressed or implied, regarding its accuracy or the results to be obtained from the use of suchinformation. No statement is intended or should be construed as a recommendation to infringe any existing patent.
GM--TDS-103
www.airexbaltekbanova.com