HSS12.750X0.250 Steel Round HSS — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Outer Diameter (OD) | 12.8 | 325.1 mm |
| Wall Thickness (t) | 0.25 | 6.3 mm |
| Area (A) | 9.16 in² | 59.1 cm² |
| Weight | 33.41 lb/ft | 49.7 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 180 | 180 | in⁴ |
| Elastic Section Modulus (S) | 28.2 | 28.2 | in³ |
| Plastic Section Modulus (Z) | 36.5 | 36.5 | in³ |
| Radius of Gyration (r) | 4.43 | 4.43 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 359 | 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 HSS12.750X0.250 section? 33.41 lb/ft (49.7 kg/m).
What is the section modulus of HSS12.750X0.250? Sx = 28.2 in³, Zx = 36.5 in³ (strong axis). Sy = 28.2 in³, Zy = 36.5 in³ (weak axis).
What steel grade is standard for HSS12.750X0.250? ASTM A500 Grade C (Fy = 46 ksi) or Grade B (Fy = 42 ksi). Verify with mill certificate.
What is the moment of inertia of HSS12.750X0.250? Ix = 180 in⁴ about the strong axis and Iy = 180 in⁴ about the weak axis. The radius of gyration is rx = 4.43 in and ry = 4.43 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.