Parallel Flange Channels - 180x75x20
Steel parallel flange channels (PFCs) are structural steel bars with a distinct "C" or "U" shaped cross-section. Unlike older channel sections that have sloped inner edges, PFCs feature top and bottom flanges that are perfectly flat and parallel to each other. This flat design makes it much easier to bolt or flush-weld the channels to flat plates, walls, and other steel beams without needing special angled washers. Because they have flat backs, they are commonly used in pairs to create strong box beams, or used individually as edge beams, stair stringers, and lintels over windows and doors.
Nearby Sections
Dimensions
| Property | Value |
|---|---|
| kg/m | 20.3 |
| D mm | 180 |
| B mm | 75 |
| t mm | 6 |
| T mm | 10.5 |
| r mm | 12 |
| d mm | 135 |
| b/T | 7.14 |
| d/t | 22.5 |
| C mm | 8 |
| N mm | 76 |
| n mm | 24 |
| m2 | 0.638 |
| m2 | 31.4 |
Full sortable table: Dimensions table for this category
Section Properties
| Property | Value |
|---|---|
| Second Moment of Area (x-x) - cm4 | 1370 |
| Second Moment of Area (y-y) - cm4 | 146 |
| Radius of Gyration (x-x) - cm | 7.27 |
| Radius of Gyration (y-y) - cm | 2.38 |
| Elastic Modulus (x-x) - cm3 | 152 |
| Elastic Modulus (y-y) - cm3 | 28.8 |
| Plastic Modulus (x-x) - cm3 | 176 |
| Plastic Modulus (y-y) - cm3 | 51.8 |
| Buckling Parameter - u | 0.945 |
| Torsional Index - x | 15.3 |
| Warping Constant - H dm6 | 0.00754 |
| Torsional Constant - J cm4 | 7.34 |
| Area of Section - A cm2 | 25.9 |
Full sortable table: Properties table for this category