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Durostone® FRP
Fiberglass Reinforced Plastic
Solder Pallet Materials Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail: info@boedeker.com

1-800-444-3485

BPI Home Page | Applications | Materials Guide | Contact Us!

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Durostone Material
TECHNICAL DESCRIPTION
Durostone ® is a heavy-duty glass fibre reinforced (FRP) plastic which offers extreme strength and excellent electrical, thermal and chemical properties. Durostone ® is manufactured by using Polyester, Vinylester, Epoxid- and modified Epoxy resins combined with glass fibers.

GENERAL PROPERTIES
Durostone ® materials have excellent mechanical properties at elevated temperatures and are dimensionally stable and retain their flatness through repeated cycling in the PCB assembly process. The low thermal conductivity of Durostone ® ensures optimal thermal distribution across the work area. The base resin used to produce Durostone ® provides resistance to the chemicals used in fluxes and also prevents solder pick-up.

Durostone ® is available in sheet form only in standard thicknesses of 0.118", 0.157", 0.197", 0.236", 0.315", 0.394" and 0.472" by 48" by 96". Stated tolerance on thicknesses is +/- .004".

TYPICAL APPLICATIONS
Durostone ® materials are designed and typically recommended for use in manufacturing solder pallets for wave-solder applications of printed circuit boards (PCB's). These materials can also be used for carriers in solder paste printing, SMT placement, IR-reflow, and conformal coating operations.

DUROSTONE ® GRADES
Durostone ® CHP760 - General Purpose
The standard grade, Durostone ® CHP-760, works well for most general use applications and is BLUE in color.
NOTE: This grade has been discontinued by the manufacturer (Feb2012).


Durostone ® CAS761 - Antistatic
The antistatic grade, Durostone ® CAS-761, is recommended for applications where static-sensitive components are processed and is BLACK in color.

Durostone ® CAG762 - Optical & Antistatic
Durostone ® CAG-762 is an antistatic grade with light reflection properties suitable for infra red and optical sensors. It is GRAY in color.

Durostone ® CCR766 - Antistatic & Chemically Resistant
Durostone grades, CHP, CAS and CAG were developed to cover the majority of applications within the PCB assembly industry. However, degradation of these materials can occur in the presence of agressive fluxes containing halides and/or a high percentage of isopropyl alcohol. Durostone ® CCR-766 is extremely resistant to halides and alcohol and laboratory tests have shown that it can withstand many cycles in harsh environments. Durostone ® CCR-766 is BLACK in color. NOTE: Do not use Durostone ® CCR-766 in the SMT process. It has been specifically developed for a wave soldering environment with only short exposures to extreme temperatures.

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TYPICAL PROPERTIES of DUROSTONE® FRP
Property

Durostone®
CHP760

(discontinued)
Durostone®
CAS761

Durostone®
CAG762

Durostone®
CCR766

PHYSICAL
Grade Standard Anti-Static Anti-Static
Optical
Anti-Static
Chem.Res
Color Blue Black Grey Black
Density (lb/in³)
(g/cm³)
0.067
1.85
0.067
1.85
0.067
1.85
0.066
1.83
Water Absorption (%) < 0.20 < 0.20 < 0.20 < 0.20
MECHANICAL
Tensile Modulus (psi) 2,600,000 2,600,000 2,600,000 2,600,000
Flexural Strength (psi) 52,200 52,200 52,200 43,500
Barcol Hardness 80 80 80 80
THERMAL
Coefficient of Linear Thermal Expansion
between 80°F and 390°F (x 10-5 in./in./°F)
0.7 0.6 0.6 0.6
Short Term Max Operating Temp
10 to 20 sec (°F / °C)
660 / 350 660 / 350 660 / 350 660 / 350
Max Continuous Operating Temp (°F / °C) 500 / 260 500 / 260 500 / 260 500 / 260
Thermal Conductivity
(BTU-in/ft²-hr-°F)
(x 10-4 cal/cm-sec-°C)

1.80
6.20

3.70
12.8

3.70
12.8

3.70
12.8
Specific Heat Capacity
(BTU/lbm-°F)
(x J/kg-°K)

0.23
960

0.23
960

0.23
960

0.23
960
ELECTRICAL
Surface Resistivity (ohms per square) > 1010 105 - 108 105 - 108 105 - 108

NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.
All values at 73°F (23°C) unless otherwise noted.
DUROSTONE is a registered trademark of Röchling Haren KG

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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail: info@boedeker.com

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