ST6X15.9 Steel ST-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 6 | 152.4 mm |
| Flange Width (bf) | 5 | 12.70 cm |
| Flange Thickness (tf) | 0.544 | 13.8 mm |
| Web Thickness (tw) | 0.35 | 8.9 mm |
| Area (A) | 4.65 in² | 30.0 cm² |
| Weight | 15.9 lb/ft | 23.7 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 14.8 | 4.66 | in⁴ |
| Elastic Section Modulus (S) | 3.3 | 1.87 | in³ |
| Plastic Section Modulus (Z) | 5.94 | 3.22 | in³ |
| Radius of Gyration (r) | 1.78 | 1 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.438 | in⁴ |
| Warping Constant (Cw) | 0.364 | in⁶ |
Design Resources
- Section Properties Database — Compare with other sections
- Steel Beam Sizes Reference — Full dimension table
- Steel Grades Reference — Material properties
Frequently Asked Questions
What is the weight of a ST6X15.9 tee? 15.9 lb/ft (23.7 kg/m).
What is the section modulus of ST6X15.9? Sx = 3.3 in³, Zx = 5.94 in³ (strong axis). Sy = 1.87 in³, Zy = 3.22 in³ (weak axis).
What steel grade is standard for ST6X15.9? ASTM A36 (Fy = 36 ksi) for ST-shapes. Verify with mill certificate.
What is the moment of inertia of ST6X15.9? Ix = 14.8 in⁴ about the strong axis and Iy = 4.66 in⁴ about the weak axis. The radius of gyration is rx = 1.78 in and ry = 1 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.