MC12X45 Steel MC-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12 | 304.8 mm |
| Flange Width (bf) | 4.01 | 10.19 cm |
| Flange Thickness (tf) | 0.7 | 17.8 mm |
| Web Thickness (tw) | 0.71 | 18.0 mm |
| Area (A) | 13.2 in² | 85.2 cm² |
| Weight | 45 lb/ft | 67.0 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 251 | 15.8 | in⁴ |
| Elastic Section Modulus (S) | 41.9 | 5.3 | in³ |
| Plastic Section Modulus (Z) | 52 | 10.1 | in³ |
| Radius of Gyration (r) | 4.36 | 1.09 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 2.33 | in⁴ |
| Warping Constant (Cw) | 373 | in⁶ |
| Distance Between Flange Centroids (ho) | 11.3 | in |
| Effective Radius (rts) | 1.35 | in |
Design Resources
- Beam Capacity Calculator — Check MC12X45 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 MC12X45 channel? 45 lb/ft (67.0 kg/m).
What is the section modulus of MC12X45? Sx = 41.9 in³, Zx = 52 in³ (strong axis). Sy = 5.3 in³, Zy = 10.1 in³ (weak axis).
What steel grade is standard for MC12X45? ASTM A36 (Fy = 36 ksi) for MC-shapes. Verify with mill certificate.
What is the moment of inertia of MC12X45? Ix = 251 in⁴ about the strong axis and Iy = 15.8 in⁴ about the weak axis. The radius of gyration is rx = 4.36 in and ry = 1.09 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.