HSS9X3X1/4 Steel Rectangular HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Height (h) | 9 | 228.6 mm |
| Width (w) | 3 | 76.2 mm |
| Wall Thickness (t) | 0.25 | 6.3 mm |
| Area (A) | 5.24 in² | 33.8 cm² |
| Weight | 19.02 lb/ft | 28.3 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 48.2 | 8.38 | in⁴ |
| Elastic Section Modulus (S) | 10.7 | 5.59 | in³ |
| Plastic Section Modulus (Z) | 14 | 6.35 | in³ |
| Radius of Gyration (r) | 3.04 | 1.27 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 24.2 | 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 HSS9X3X1/4 section? 19.02 lb/ft (28.3 kg/m).
What is the section modulus of HSS9X3X1/4? Sx = 10.7 in³, Zx = 14 in³ (strong axis). Sy = 5.59 in³, Zy = 6.35 in³ (weak axis).
What steel grade is standard for HSS9X3X1/4? ASTM A500 Grade C (Fy = 50 ksi) or Grade B (Fy = 46 ksi). Verify with mill certificate.
What is the moment of inertia of HSS9X3X1/4? Ix = 48.2 in⁴ about the strong axis and Iy = 8.38 in⁴ about the weak axis. The radius of gyration is rx = 3.04 in and ry = 1.27 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.