HSS20X12X5/16 Steel Rectangular HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Height (h) | 20 | 508.0 mm |
| Width (w) | 12 | 304.8 mm |
| Wall Thickness (t) | 0.313 | 7.9 mm |
| Area (A) | 18.1 in² | 116.8 cm² |
| Weight | 65.87 lb/ft | 98.0 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1010 | 464 | in⁴ |
| Elastic Section Modulus (S) | 101 | 77.3 | in³ |
| Plastic Section Modulus (Z) | 122 | 85.8 | in³ |
| Radius of Gyration (r) | 7.48 | 5.07 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 997 | 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 HSS20X12X5/16 section? 65.87 lb/ft (98.0 kg/m).
What is the section modulus of HSS20X12X5/16? Sx = 101 in³, Zx = 122 in³ (strong axis). Sy = 77.3 in³, Zy = 85.8 in³ (weak axis).
What steel grade is standard for HSS20X12X5/16? ASTM A500 Grade C (Fy = 50 ksi) or Grade B (Fy = 46 ksi). Verify with mill certificate.
What is the moment of inertia of HSS20X12X5/16? Ix = 1010 in⁴ about the strong axis and Iy = 464 in⁴ about the weak axis. The radius of gyration is rx = 7.48 in and ry = 5.07 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.