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Documentation - Pultruded Shapes - Technical Data
Pultruded Shapes Technical Data
Representative Material and Electrical Properties for ISO and VE Pultruded FRP
Technical Overview
The following tables provide representative material and electrical properties for Fiberr pultruded fiberglass-reinforced plastic profiles manufactured with isophthalic polyester (ISO) and vinyl ester (VE) resin systems.
Pultruded FRP is an anisotropic composite material. Properties vary by direction because continuous fiberglass rovings provide most of the reinforcement along the length of the profile, while woven reinforcement, chopped strand mat, transverse fibers, and resin provide strength across the profile.
Isophthalic Polyester Resin A general-purpose structural resin system providing a balance of mechanical performance, corrosion resistance, availability, and cost for common industrial and commercial applications.
Vinyl Ester Resin A higher-performance resin system providing increased mechanical properties and improved resistance to aggressive chemicals, moisture, and corrosive service environments.
Directional terminology: Axial or longitudinal properties are measured parallel to the pultrusion direction. Transverse properties are measured perpendicular to the pultrusion direction. The appropriate directional value should be used for the expected load path.
Material Properties
Representative Mechanical, Physical and Thermal Properties
| Property | Standard | Imperial ISO Resin | Imperial VE Resin | Imperial Units | Metric ISO Resin | Metric VE Resin | Metric Units |
|---|---|---|---|---|---|---|---|
| 24-Hour Water Absorption | ASTM D570 | 0.3 | 0.3 | % | 0.3 | 0.3 | % |
| Barcol Hardness | ASTM D2583 | 45 | 45 | Barcol | 45 | 45 | Barcol |
| Bearing Stress Axial | ASTM D953 | 44 | 50.7 | ksi | 305 | 349 | MPa |
| Bearing Stress Transverse | ASTM D953 | 38 | 43.8 | ksi | 265 | 302 | MPa |
| Coefficient of Thermal Expansion Longitudinal | ASTM D696 | 7 × 10−6 | 7 × 10−6 | in/in-°F | 12.6 × 10−6 | 12.6 × 10−6 | mm/mm-°C |
| Coefficient of Thermal Expansion Transverse | ASTM D696 | 16 × 10−6 | 16 × 10−6 | in/in-°F | 28.8 × 10−6 | 28.8 × 10−6 | mm/mm-°C |
| Compressive Modulus Axial | ASTM D695 | 2,625 | 2,625 | ksi | 18.1 | 18.1 | GPa |
| Compressive Modulus Transverse | ASTM D695 | 1,030 | 1,236 | ksi | 7.1 | 8.5 | GPa |
| Compressive Shear Stress | ASTM D3846 | 3.8 | 4.1 | ksi | 26 | 29 | MPa |
| Compressive Strength Axial | ASTM D695 | 46 | 52.3 | ksi | 320 | 361 | MPa |
| Compressive Strength Transverse | ASTM D695 | 16 | 19.4 | ksi | 112 | 134 | MPa |
| Flexural Modulus Axial | ASTM D790 | 3,408 | 4,260 | ksi | 23.5 | 29.4 | GPa |
| Flexural Modulus Transverse | ASTM D790 | 1,073 | 1,341.3 | ksi | 7.4 | 9.2 | GPa |
| Flexural Strength Axial | ASTM D790 | 35 | 39.8 | ksi | 240 | 274 | MPa |
| Flexural Strength Transverse | ASTM D790 | 15 | 17 | ksi | 100 | 118 | MPa |
| Heat Deflection Temperature | ASTM D648 | 302 | 356 | °F | 150 | 180 | °C |
| Interlaminar Shear Strength | ASTM D2344 | 3.6 | 4.1 | ksi | 25 | 28 | MPa |
| Maximum Recommended Continuous Service Temperature | — | 150 | 200 | °F | 66 | 93 | °C |
| Notched Izod Impact Strength | ASTM D256 | 25.7 | 30.8 | ft-lb/in | 1.4 | 1.68 | kgf·m/cm |
| Pin Bearing Strength Axial | ASTM D953 | 22 | 25.3 | ksi | 150 | 175 | MPa |
| Pin Bearing Strength Transverse | ASTM D953 | 10 | 11.5 | ksi | 70 | 79 | MPa |
| Poisson’s Ratio | ASTM D3039 | 0.35 | 0.35 | — | 0.35 | 0.35 | — |
| Shear Modulus | ASTM D5379 | 420 | 420 | ksi | 2,895 | 2,895 | MPa |
| Specific Gravity | ASTM D792 | 1.66–1.93 | 1.66–1.93 | — | 1.66–1.93 | 1.66–1.93 | — |
| Tensile Modulus / Young’s Modulus Axial | ASTM D638 | 3,335 | 4,002 | ksi | 23 | 27.6 | GPa |
| Tensile Modulus / Young’s Modulus Transverse | ASTM D638 | 1,015 | 1,268.8 | ksi | 7 | 8.7 | GPa |
| Tensile Strength Axial | ASTM D638 | 35 | 39.8 | ksi | 240 | 274 | MPa |
| Tensile Strength Transverse | ASTM D638 | 7.25 | 7.7 | ksi | 50 | 53 | MPa |
| Thermal Conductivity | ASTM C177 | 4.0 | 4.0 | BTU-in/ft²-hr-°F | 0.58 | 0.58 | W/m-K |
Electrical Properties
Representative Electrical and Insulation Properties
| Property | Standard | Imperial ISO Resin | Imperial VE Resin | Imperial Units | Metric ISO Resin | Metric VE Resin | Metric Units |
|---|---|---|---|---|---|---|---|
| Arc Resistance | ASTM D495 | 80 | 80 | s | 120 | 120 | s |
| Dielectric Constant / Relative Permittivity | ASTM D150 | ≤5 | 5.2 | — | ≤5 | 5.2 | — |
| Dielectric Strength Axial | ASTM D149 | 246.3 | 246.3 | kV/in | 9.7 | 9.7 | kV/mm |
| Dielectric Strength Transverse | ASTM D149 | 264.7 | 264.7 | kV/in | 10.42 | 10.42 | kV/mm |
| Dissipation Factor, 60 Hz | ASTM D150 | 0.03 | 0.03 | — | 0.03 | 0.03 | — |
| Surface Resistance | ASTM D257 | 1 × 1010–1 × 1015 | 1 × 1010–1 × 1015 | Ω | 1 × 1010–1 × 1015 | 1 × 1010–1 × 1015 | Ω |
| Volume Resistivity / Specific Insulation Resistance | ASTM D257 | 3.94 × 1012 | >3.94 × 1013 | Ω·in | 1.00 × 1013 | >1.00 × 1014 | Ω·cm |
General guidance only: Values shown are representative of standard test specimens prepared, conditioned, and tested under the applicable ASTM methods. Actual product properties may vary with profile geometry, wall thickness, overall dimensions, resin formulation, fiberglass content, roving configuration, woven reinforcement, chopped strand mat, surface veil, number and placement of reinforcement layers, pigments, fillers, fire-retardant additives, UV stabilizers, cure conditions, manufacturing tolerances, test direction, specimen preparation, temperature, moisture, and environmental exposure. These values are not guaranteed structural design allowables unless expressly confirmed in a project-specific specification, certified test report, or engineering submittal. Full-profile performance, local buckling, connection capacity, fastener behavior, creep, fatigue, deflection, and project-specific loading must be evaluated separately.