M4X4.08 Steel Miscellaneous beam — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 4 | 101.6 mm |
| Flange Width (bf) | 2.25 | 5.71 cm |
| Flange Thickness (tf) | 0.17 | 4.3 mm |
| Web Thickness (tw) | 0.115 | 2.9 mm |
| Area (A) | 1.27 in² | 8.2 cm² |
| Weight | 4.08 lb/ft | 6.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 3.53 | 0.325 | in⁴ |
| Elastic Section Modulus (S) | 1.77 | 0.289 | in³ |
| Plastic Section Modulus (Z) | 2 | 0.453 | in³ |
| Radius of Gyration (r) | 1.67 | 0.506 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.015 | in⁴ |
| Warping Constant (Cw) | 1.19 | in⁶ |
| Distance Between Flange Centroids (ho) | 3.83 | in |
| Effective Radius (rts) | 0.593 | in |
Design Resources
- Beam Capacity Calculator — Check M4X4.08 for your span and loads
- Column Capacity Calculator — Check M4X4.08 as a column
- 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 M4X4.08 beam? 4.08 lb/ft (6.1 kg/m).
What is the section modulus of M4X4.08? Sx = 1.77 in³, Zx = 2 in³ (strong axis). Sy = 0.289 in³, Zy = 0.453 in³ (weak axis).
What steel grade is standard for M4X4.08? ASTM A36 (Fy = 36 ksi) for M-shapes. Verify with mill certificate.
What is the moment of inertia of M4X4.08? Ix = 3.53 in⁴ about the strong axis and Iy = 0.325 in⁴ about the weak axis. The radius of gyration is rx = 1.67 in and ry = 0.506 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.