MC12X40 Steel MC-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12 | 304.8 mm |
| Flange Width (bf) | 3.89 | 9.88 cm |
| Flange Thickness (tf) | 0.7 | 17.8 mm |
| Web Thickness (tw) | 0.59 | 15.0 mm |
| Area (A) | 11.8 in² | 76.1 cm² |
| Weight | 40 lb/ft | 59.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 234 | 14.2 | in⁴ |
| Elastic Section Modulus (S) | 39 | 4.98 | in³ |
| Plastic Section Modulus (Z) | 47.7 | 9.31 | in³ |
| Radius of Gyration (r) | 4.46 | 1.1 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1.69 | in⁴ |
| Warping Constant (Cw) | 336 | in⁶ |
| Distance Between Flange Centroids (ho) | 11.3 | in |
| Effective Radius (rts) | 1.33 | in |
Design Resources
- Beam Capacity Calculator — Check MC12X40 for your span and loads
- 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 MC12X40 channel? 40 lb/ft (59.5 kg/m).
What is the section modulus of MC12X40? Sx = 39 in³, Zx = 47.7 in³ (strong axis). Sy = 4.98 in³, Zy = 9.31 in³ (weak axis).
What steel grade is standard for MC12X40? ASTM A36 (Fy = 36 ksi) for MC-shapes. Verify with mill certificate.
What is the moment of inertia of MC12X40? Ix = 234 in⁴ about the strong axis and Iy = 14.2 in⁴ about the weak axis. The radius of gyration is rx = 4.46 in and ry = 1.1 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.