Moment of Inertia (Ix / Iy)
Typically 0.0012–0.0085 cm⁴, depends on profile shape and size
Section Modulus (Zx / Zy)
Measures 0.005–0.035 cm³; affects load strength and stiffness
Radius of Gyration (ix / iy)
Between 0.4 to 2.8 cm depending on section geometry
Max. Axial Load (Euler Buckling)
Up to 2,500 kg for steel; 1,500 kg for aluminum conduits
Max. Load at Slot (Shear Test)
Slot shear resistance varies 800–2,200 N based on profile thickness
Torsional Constant (J)
Ranges 0.0005–0.01 cm⁴; affects rotational resistance under torque
Max Torque (Torsional Load Limit)
60–450 N·m before torsional deformation, depending on size and alloy
Elastic Deflection (100 N Load)
<1.5 mm (steel), <2.5 mm (aluminum) deflection at 1 m span
Dynamic Load Rating
Handles 300–1,500 N under vibration or oscillation environments continuously
Compatibility Tolerance
±0.15 mm OD tolerance to fit standard EMT connectors and brackets
Machining Precision Grade
±0.2 mm standard; ±0.1 mm achievable for tight fit components
Fatigue Life (Slot Edge)
Steel >100,000 cycles; aluminum >50,000 cycles under cyclic stress near slots
Thermal Expansion (ΔL @ ΔT=50°C)
Steel ~0.3 mm/m; aluminum ~1.1 mm/m with 50°C temperature change
Slot Pull-Out Resistance
1,000–2,000 N before connector disengages from slotted section
Max Load Bearing at Corner Joint
Handles up to 2,000 N with reinforced brackets at corner joints
Steel EMT offers exceptional strength and resistance to mechanical stress, ideal for areas exposed to vibration and physical impact. Aluminum EMT is lightweight yet strong, providing sufficient mechanical protection for less demanding environments, where weight considerations are key.
Both extruded steel and aluminum EMT meet NEC and UL standards, ensuring electrical installations are safe and compliant. Steel EMT is particularly fire-resistant, offering additional protection in high-temperature environments, while aluminum EMT excels in environments where corrosion resistance is prioritized.
