FRP technical data — material properties & specifications
Published mechanical and physical properties for the standard pultruded E-glass profile laminate, with grade minimums, test methods, and guidance for using the data in member design.
FRP technical data — E23 mechanical & physical properties
The same laminate values printed on every product datasheet (E-glass / isophthalic polyester, EN 13706 Grade E23), shown against the EN 13706-3 Table 1 grade minimums. One data source feeds both this page and the per-size datasheets, so the numbers always match.
Read this FRP technical data as material characterization, not as a complete member capacity table. Pultruded profiles are anisotropic: longitudinal values are dominated by continuous rovings, while transverse and connection behavior depend more heavily on mats, resin, geometry, holes, and load direction. Final design therefore combines these properties with section data, exposure and duration factors, connection checks, and the governing project code.
EN 13706 defines the pultruded-profile grade requirements; the referenced EN ISO methods define how each coupon property is measured. The published column shows the standard laminate data used across F1 datasheets, while the minimum column makes the applicable E23 threshold visible instead of mixing the two values.
| Property | Published value | EN 13706 E23 minimum | Test method |
|---|---|---|---|
| Tensile modulus E_L (longitudinal) | 23 GPa | 23 GPa | EN ISO 527-4 |
| Transverse tensile modulus E_T | 7 GPa | 7 GPa | EN ISO 527-4 |
| Tensile strength (longitudinal) | 240 MPa | 240 MPa | EN ISO 527-4 |
| Tensile strength (transverse) | 50 MPa | 50 MPa | EN ISO 527-4 |
| Flexural strength (longitudinal) | 240 MPa | 240 MPa | EN ISO 14125 |
| Flexural strength (transverse) | 100 MPa | 100 MPa | EN ISO 14125 |
| Interlaminar shear strength (ILSS) | 30 MPa | 25 MPa | EN ISO 14130 |
| Pin-bearing strength (longitudinal) | 150 MPa | 150 MPa | EN 13706-2 Annex D |
| Pin-bearing strength (transverse) | 70 MPa | 70 MPa | EN 13706-2 Annex D |
| Compressive strength (longitudinal) | 240 MPa | not specified | EN ISO 604 |
| Barcol hardness | 45 | not specified | ASTM D2583 |
| Water absorption (24 h) | 0.6 % | not specified | EN ISO 62 |
| Density | 1.9 g/cm³ | not specified | EN ISO 1183 |
| Glass content | 65–70% by weight | not specified | EN ISO 1172 |
ILSS is published at 30 MPa, above the EN 13706 minimum of 25 MPa (FRP Profile Design Manual DOC-PF-2026-EN Rev. A). Compressive strength, Barcol hardness and water absorption are not specified by EN 13706 — the figures shown are typical industry values for this resin system, pending F1 certified test data; request certified values before final design. Values apply to the standard general-purpose laminate; fire-retardant, vinyl ester, epoxy, polyurethane, and phenolic systems each have their own formulation sheet on the per-size datasheets.
How to use FRP technical data in design
1. Select the laminate
Match the resin system and grade to corrosion, fire, temperature, moisture, and electrical requirements before using a mechanical property in a calculation.
2. Combine material and geometry
Use the relevant modulus or strength with the actual section properties, span, restraint, load direction, and connection layout from the selected profile datasheet.
3. Apply design factors
Convert characteristic or published values into project design values using the safety, environment, duration, temperature, and code factors required by the governing standard.
For preliminary beam screening, pair this FRP technical data with the FRP span tables and profile calculator. Project-specific engineering review remains necessary for concentrated loads, buckling, holes, joints, fatigue, fire, or sustained-load conditions.
Original Test Reports & Long-Term Durability Data
We are commissioning third-party testing to publish original durability data for our pultruded FRP profiles — not manufacturer-reported specs, but signed reports from Intertek / SGS labs. Each report will be cite-able by specifiers and usable by external LLMs.
Chemical Resistance — 2000h H₂SO₄ / NaOH / Cl₂
Standard: ASTM G48 + D543 methodology
Vinyl ester + isophthalic polyester profiles, 2000-hour exposure at concentrations relevant to chemical plants, pulp & paper, water treatment. Tensile retention curves per resin system.
Testing lab: Intertek (TBD)
Request early access →UV Durability — 5000h ASTM G154
Standard: ASTM G154 Cycle 1
5000 hours accelerated UV + moisture exposure. Surface blush, color shift (ΔE), flexural retention by resin system (polyester vs vinyl ester vs UV-stabilized). Correlates to ~10 years outdoor.
Testing lab: SGS (TBD)
Request early access →Long-Term Hydrolysis — Boiling Water 28d
Standard: ASTM D570 extended
Wet-environment exposure: 28-day boiling water immersion. Tensile & flexural retention, dimensional swelling. Relevant for water treatment, marina, and coastal infrastructure specifiers.
Testing lab: Intertek (TBD)
Request early access →Fire — EN 45545-2 R1/HL2 + ASTM E84
Standard: EN 45545-2, ASTM E84 Class A
Phenolic and fire-retardant polyester variants tested for rail (EN 45545-2 HL1/HL2/HL3) and North American building (ASTM E84 Class A/B). Smoke density and toxicity.
Testing lab: UL (TBD)
Request early access →Fatigue — 10⁷ cycles bending
Standard: ASTM D7791
Cyclic flexural loading to 10 million cycles on I-beam and channel sections. S–N curves at 30/50/70 % ultimate load. For bridge deck, walkway, and machinery base specifiers.
Testing lab: SGS (TBD)
Request early access →Creep — 1000h sustained load
Standard: ASTM D2990
Long-term sustained-load creep at 30/50/70 % design stress, room temperature and 60 °C. Generates creep factor for long-span structural design.
Testing lab: Intertek (TBD)
Request early access →For specifiers: If you need a specific test protocol (different chemical, higher temperature, longer duration) to unblock a project decision, request it here — we prioritize testing that serves real specification questions. Qualified projects can access preliminary data under NDA.
Need specific technical data for your project?
Send the dimensions, quantity, service environment, and destination. Engineering responds within one business day.