HSS20X20X5/8 Steel Rectangular HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Height (h) | 20 | 508.0 mm |
| Width (w) | 20 | 508.0 mm |
| Wall Thickness (t) | 0.625 | 15.9 mm |
| Area (A) | 44.3 in² | 285.8 cm² |
| Weight | 161.4 lb/ft | 240.2 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 2750 | 2750 | in⁴ |
| Elastic Section Modulus (S) | 275 | 275 | in³ |
| Plastic Section Modulus (Z) | 320 | 320 | in³ |
| Radius of Gyration (r) | 7.88 | 7.88 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 4320 | in⁴ |
| Warping Constant (Cw) | 0 | in⁶ |
Design Resources
- Section Properties Database — Compare with other sections
- Steel Grades Reference — Material properties
Frequently Asked Questions
What is the weight of a HSS20X20X5/8 section? 161.4 lb/ft (240.2 kg/m).
What is the section modulus of HSS20X20X5/8? Sx = 275 in³, Zx = 320 in³ (strong axis). Sy = 275 in³, Zy = 320 in³ (weak axis).
What steel grade is standard for HSS20X20X5/8? ASTM A500 Grade C (Fy = 50 ksi) or Grade B (Fy = 46 ksi). Verify with mill certificate.
What is the moment of inertia of HSS20X20X5/8? Ix = 2750 in⁴ about the strong axis and Iy = 2750 in⁴ about the weak axis. The radius of gyration is rx = 7.88 in and ry = 7.88 in.
Related Pages
Educational reference only. Verify all section properties against the current AISC Manual and mill certificates before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.