HSS18.000X1.000 Steel Round HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Outer Diameter (OD) | 18 | 457.2 mm |
| Wall Thickness (t) | 1 | 25.4 mm |
| Area (A) | 49.9 in² | 321.9 cm² |
| Weight | 181.7 lb/ft | 270.4 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1820 | 1820 | in⁴ |
| Elastic Section Modulus (S) | 202 | 202 | in³ |
| Plastic Section Modulus (Z) | 271 | 271 | in³ |
| Radius of Gyration (r) | 6.04 | 6.04 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 3640 | 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 HSS18.000X1.000 section? 181.7 lb/ft (270.4 kg/m).
What is the section modulus of HSS18.000X1.000? Sx = 202 in³, Zx = 271 in³ (strong axis). Sy = 202 in³, Zy = 271 in³ (weak axis).
What steel grade is standard for HSS18.000X1.000? ASTM A500 Grade C (Fy = 46 ksi) or Grade B (Fy = 42 ksi). Verify with mill certificate.
What is the moment of inertia of HSS18.000X1.000? Ix = 1820 in⁴ about the strong axis and Iy = 1820 in⁴ about the weak axis. The radius of gyration is rx = 6.04 in and ry = 6.04 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.