W6X9 Steel Beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 5.90 | in (149.9 mm) |
| Flange Width (bf) | 3.94 | in (100.1 mm) |
| Flange Thickness (tf) | 0.21 | in |
| Web Thickness (tw) | 0.17 | in |
| Area (A) | 2.68 | in² (17.3 cm²) |
| Weight | 9 | lb/ft (13 kg/m) |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 16.40 | 2.20 | in⁴ |
| Elastic Section Modulus (S) | 5.56 | 1.11 | in³ |
| Plastic Section Modulus (Z) | 6.23 | 1.72 | in³ |
| Radius of Gyration (r) | 2.47 | 0.91 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.04 | in⁴ |
| Warping Constant (Cw) | 17.70 | in⁶ |
| Distance Between Flange Centroids (ho) | 5.69 | in |
| Effective Radius (rts) | 1.06 | in |
Design Resources
- Beam Capacity Calculator — Check W6X9 for your span and loads
- Column Capacity Calculator — Check W6X9 as a column
- Section Properties Database — Compare with other sections
- Steel Beam Sizes Reference — Full W-shape dimension table
- Steel Grades Reference — A992/A572 material properties
Frequently Asked Questions
What is the weight of a W6X9 beam? 9 lb/ft (13 kg/m). A 40-ft length weighs approximately 360 lbs.
What is the section modulus of W6X9? Sx = 5.6 in³ (strong axis) and Sy = 1.1 in³ (weak axis). The plastic section modulus Zx = 6.2 in³ and Zy = 1.7 in³.
What steel grade is standard for W6X9? Typically ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for W-shapes. Also available in A572 Grade 50 or A36. Verify with mill certificate.
What is the moment of inertia of W6X9? Ix = 16.4 in⁴ about the strong axis and Iy = 2.2 in⁴ about the weak axis. The radius of gyration is rx = 2.47 in and ry = 0.91 in.
Related Pages
- Steel Beam Sizes Reference
- Beam Capacity Calculator
- Column Capacity Calculator
- Section Properties Database
Educational reference only. Verify all section properties against the current AISC Manual and mill certificates before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.