Moment of Inertia (Ix / Iy)
1550 mm⁴ along the horizontal (x) axis and 950 mm⁴ along the vertical (y) axis, both measured from the centroid of the cross-section.
Section Modulus (Zx / Zy)
38.7 / 22.1 mm³, defines resistance to section bending stress
Radius of Gyration (ix / iy)
ix = 4.76 mm, iy = 3.73 mm, calculated from Ix/Iy and area
Max. Axial Load (Euler Buckling)
920 N for 1-meter length, assuming pinned-pinned boundary condition
Max. Load at Slot (Shear Test)
420 N max shear strength using 5 mm steel embedment
Torsional Constant (J)
590 mm⁴ for warping resistance in pure torsional loads
Max Torque (Torsional Load Limit)
1.2 Nm at 20% allowable angular elastic shear strain
Elastic Deflection (100 N Load)
2.1 mm deflection at 100 N, within elastic recovery range
Dynamic Load Rating
Withstands 250 N, 5 Hz cyclic loading up to 1 million cycles
Compatibility Tolerance
±0.3 mm for slot widths between 4 mm and 6 mm
Machining Precision Grade
ISO 3302-1 M2 covers dimensional control during extrusion profile production
Fatigue Life (Slot Edge)
Survives 1 million cycles under edge-loaded shear fatigue at 20% strain
Thermal Expansion (ΔL @ ΔT=50°C)
0.6 mm/m expansion per 50°C change, coefficient 1.2×10⁻⁴/°C
Slot Pull-Out Resistance
310 N resistance using PSA adhesive in steel retention slot
Max Load Bearing at Corner Joint
160 N load at 90° bend with 10 mm radius curvature
The closed-cell structure of EPDM sponge profiles limits the ingress of water vapor, air, and particulates. Water absorption rates typically remain below 5% by volume, depending on the density and structure. This is critical in maintaining internal humidity control within electrical cabinets, control panels, and sealed mechanical assemblies. This feature mitigates corrosion risk in metallic housings and prevents pressure equalization failures in sensitive enclosures.
EPDM elastomers possess inherently high volume resistivity (typically >10¹⁴ Ω·cm), making the material ideal for applications that require dielectric isolation between conductive surfaces. The non-conductive nature of EPDM prevents current leakage paths and provides insulation barriers in electrical cabinets, battery housings, and high-voltage assemblies. Its low dielectric constant contributes to reduced capacitive coupling, critical in EMI-sensitive environments.
