Steel Section Catalog
C 75x40x15x4.25
BR — Cold-formed Lipped Channel
Cold-formed lipped channels (C shapes) are lightweight profiles commonly used as purlins, girts, and light framing members. The stiffening lips increase local buckling resistance. Designed per AISI S100 and NBR 14762.
The C 75x40x15x4.25 steel profile weighs 7.3 kg/m (4.93 lb/ft), has a depth of 75 mm (2.95 in), flange width 40 mm (1.57 in). Cross-sectional area: 714 mm². Moment of inertia Ix = 59.93 cm⁴, Iy = 14.77 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 75 mm | 2.95 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 4.3 mm | 0.17 in |
| Lip | 15 mm | 0.59 in |
| Weight | 7.3 kg/m | 4.93 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 714 mm² | 1.107 in² |
| Moment of inertia (Ix) | 59.93 cm⁴ | 1.44 in⁴ |
| Moment of inertia (Iy) | 14.77 cm⁴ | 0.35 in⁴ |
| Elastic section modulus (Sx) | 15.98 cm³ | 0.975 in³ |
| Elastic section modulus (Sy) | 5.49 cm³ | 0.335 in³ |
| Plastic section modulus (Zx) | 18.38 cm³ | 1.122 in³ |
| Plastic section modulus (Zy) | 6.58 cm³ | 0.402 in³ |
| Radius of gyration (rx) | 2.9 cm | 1.142 in |
| Radius of gyration (ry) | 1.44 cm | 0.567 in |
Beam Calculator— C 75x40x15x4.25
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mfixed @ 0mfixed @ 6m→kN/m
Results — C 75x40x15x4.25
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
140.79 mm
L/43
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
