HSS18.000X0.750 Steel Round HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Outer Diameter (OD) | 18 | 457.2 mm |
| Wall Thickness (t) | 0.75 | 19.0 mm |
| Area (A) | 37.9 in² | 244.5 cm² |
| Weight | 138.3 lb/ft | 205.8 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1420 | 1420 | in⁴ |
| Elastic Section Modulus (S) | 158 | 158 | in³ |
| Plastic Section Modulus (Z) | 209 | 209 | in³ |
| Radius of Gyration (r) | 6.12 | 6.12 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 2840 | 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 HSS18.000X0.750 section? 138.3 lb/ft (205.8 kg/m).
What is the section modulus of HSS18.000X0.750? Sx = 158 in³, Zx = 209 in³ (strong axis). Sy = 158 in³, Zy = 209 in³ (weak axis).
What steel grade is standard for HSS18.000X0.750? ASTM A500 Grade C (Fy = 46 ksi) or Grade B (Fy = 42 ksi). Verify with mill certificate.
What is the moment of inertia of HSS18.000X0.750? Ix = 1420 in⁴ about the strong axis and Iy = 1420 in⁴ about the weak axis. The radius of gyration is rx = 6.12 in and ry = 6.12 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.