MC12X31 Steel MC-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12 | 304.8 mm |
| Flange Width (bf) | 3.67 | 9.32 cm |
| Flange Thickness (tf) | 0.7 | 17.8 mm |
| Web Thickness (tw) | 0.37 | 9.4 mm |
| Area (A) | 9.12 in² | 58.8 cm² |
| Weight | 31 lb/ft | 46.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 202 | 11.3 | in⁴ |
| Elastic Section Modulus (S) | 33.7 | 4.37 | in³ |
| Plastic Section Modulus (Z) | 39.7 | 8.15 | in³ |
| Radius of Gyration (r) | 4.71 | 1.11 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1 | in⁴ |
| Warping Constant (Cw) | 267 | in⁶ |
| Distance Between Flange Centroids (ho) | 11.3 | in |
| Effective Radius (rts) | 1.28 | in |
Design Resources
- Beam Capacity Calculator — Check MC12X31 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 MC12X31 channel? 31 lb/ft (46.1 kg/m).
What is the section modulus of MC12X31? Sx = 33.7 in³, Zx = 39.7 in³ (strong axis). Sy = 4.37 in³, Zy = 8.15 in³ (weak axis).
What steel grade is standard for MC12X31? ASTM A36 (Fy = 36 ksi) for MC-shapes. Verify with mill certificate.
What is the moment of inertia of MC12X31? Ix = 202 in⁴ about the strong axis and Iy = 11.3 in⁴ about the weak axis. The radius of gyration is rx = 4.71 in and ry = 1.11 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.