ST5X12.7 Steel ST-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 5 | 127.0 mm |
| Flange Width (bf) | 4.66 | 11.84 cm |
| Flange Thickness (tf) | 0.491 | 12.5 mm |
| Web Thickness (tw) | 0.311 | 7.9 mm |
| Area (A) | 3.72 in² | 24.0 cm² |
| Weight | 12.7 lb/ft | 18.9 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 7.79 | 3.36 | in⁴ |
| Elastic Section Modulus (S) | 2.05 | 1.44 | in³ |
| Plastic Section Modulus (Z) | 3.7 | 2.49 | in³ |
| Radius of Gyration (r) | 1.45 | 0.95 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.3 | in⁴ |
| Warping Constant (Cw) | 0.173 | 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 ST5X12.7 tee? 12.7 lb/ft (18.9 kg/m).
What is the section modulus of ST5X12.7? Sx = 2.05 in³, Zx = 3.7 in³ (strong axis). Sy = 1.44 in³, Zy = 2.49 in³ (weak axis).
What steel grade is standard for ST5X12.7? ASTM A36 (Fy = 36 ksi) for ST-shapes. Verify with mill certificate.
What is the moment of inertia of ST5X12.7? Ix = 7.79 in⁴ about the strong axis and Iy = 3.36 in⁴ about the weak axis. The radius of gyration is rx = 1.45 in and ry = 0.95 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.