CHS 76×6.4 — Pultruded FRP Profile
Round Tube · EN 13706 E23 · 2.1 kg/m
CHS ⌀76×6.4
| Outside diameter (OD) | 76 mm |
| Wall thickness (t) | 6.4 mm |
| Mass per metre (published) | 2.1 kg/m |
Dimensioned cross-section drawing in DXF — no login, no email. Opens in AutoCAD, DraftSight, LibreCAD, and every major CAD package.
| Cross-section area A | 1399 mm² |
| Moment of inertia Ix | 85.45 cm⁴ |
| Moment of inertia Iy | 85.45 cm⁴ |
| Section modulus Sx | 22.49 cm³ |
| Section modulus Sy | 22.49 cm³ |
| Radius of gyration rx | 24.71 mm |
| Radius of gyration ry | 24.71 mm |
| Torsion constant J | 170.9 cm⁴ |
| Mass per metre (calculated) | 2.66 kg/m |
Derived exactly from the cross-section geometry by polygon integration. The published mass per metre is the authoritative catalog value; the calculated figure is a geometric cross-check. Because FRP modulus is ~1/10 of steel, deflection usually governs design — use the deflection calculator for span checks.
| Property | Value | Test method |
|---|---|---|
| Tensile modulus E_L (longitudinal) | 23 GPa | EN ISO 527-4 |
| Transverse tensile modulus E_T | 7 GPa | EN ISO 527-4 |
| Tensile strength (longitudinal) | 240 MPa | EN ISO 527-4 |
| Tensile strength (transverse) | 50 MPa | EN ISO 527-4 |
| Flexural strength (longitudinal) | 240 MPa | EN ISO 14125 |
| Flexural strength (transverse) | 100 MPa | EN ISO 14125 |
| Interlaminar shear strength (ILSS) | 30 MPa | EN ISO 14130 |
| Pin-bearing strength (longitudinal) | 150 MPa | EN 13706-2 Annex D |
| Pin-bearing strength (transverse) | 70 MPa | EN 13706-2 Annex D |
| Compressive strength (longitudinal) | 240 MPa | EN ISO 604 |
| Barcol hardness | 45 | ASTM D2583 |
| Water absorption (24 h) | 0.6 % | EN ISO 62 |
Data basis: F1-published general-purpose laminate (FRP Profile Design Manual DOC-PF-2026-EN Rev. A); ILSS 30 MPa published above the EN 13706 minimum of 25 MPa; transverse values are EN 13706-3 Table 1 grade minimums. Standard isophthalic polyester is not fire-retardant — for ASTM E84 Class 1 specify the FR-E23 grade. 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.
Standards: EN 13706 Grade E23.
Values marked "verify before release" are pending certified test data and are never estimated. Request batch-traceable certified data via the quote form before final design.
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