Steel Section Catalog
C 127x50x17x3.75
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.
Also known as: Montén de 5 pulgadas (México) · PFC 127x50x17x3.75 (UK / Australia)
The C 127x50x17x3.75 steel profile weighs 9.9 kg/m (6.69 lb/ft), has a depth of 127 mm (5.00 in), flange width 50 mm (1.97 in). Cross-sectional area: 922.5 mm². Moment of inertia Ix = 223.65 cm⁴, Iy = 29.98 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.75 mm ≈ 9 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 127 mm | 5.00 in |
| Width (b) | 50 mm | 1.97 in |
| Thickness (t) | 3.8 mm | 0.15 in |
| Lip | 17 mm | 0.67 in |
| Weight | 9.9 kg/m | 6.69 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 922.5 mm² | 1.430 in² |
| Moment of inertia (Ix) | 223.65 cm⁴ | 5.37 in⁴ |
| Moment of inertia (Iy) | 29.98 cm⁴ | 0.72 in⁴ |
| Elastic section modulus (Sx) | 35.22 cm³ | 2.149 in³ |
| Elastic section modulus (Sy) | 8.42 cm³ | 0.514 in³ |
| Plastic section modulus (Zx) | 40.5 cm³ | 2.471 in³ |
| Plastic section modulus (Zy) | 10.1 cm³ | 0.616 in³ |
| Radius of gyration (rx) | 4.92 cm | 1.937 in |
| Radius of gyration (ry) | 1.8 cm | 0.709 in |
Beam Calculator— C 127x50x17x3.75
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mfixed @ 0mfixed @ 6m→kN/m
Results — C 127x50x17x3.75
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
37.73 mm
L/159
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
