AISC 360-22ASTM A992 / A6W40 Series
AISC W40x397 Properties & Dimensions
Standard wide flange I-beam cross-section properties, geometric dimensions, and LRFD design capacities per AISC Steel Construction Manual 15th/16th Edition.
Cross-Section Technical Schematic
Dual Units: Imperial (US) · SI MetricGeometric Dimensions & Area
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Nominal Weight | w | 397 lb/ft | 590.8 kg/m |
| Cross-Sectional Area | A | 117 in² | 75484 mm² |
| Overall Depth | d | 41 in | 1041.4 mm |
| Flange Width | bf | 16.1 in | 408.9 mm |
| Flange Thickness | tf | 2.2 in | 55.9 mm |
| Web Thickness | tw | 1.22 in | 31 mm |
| Flange Centroid Distance | ho | 38.8 in | 985.5 mm |
Bending & Buckling Properties
| Property | Symbol | Imperial (US) | Metric (SI) |
|---|---|---|---|
| Strong-Axis Inertia | Ix | 32000 in⁴ | 13319.4 ×10⁶ mm⁴ |
| Strong-Axis Elastic Modulus | Sx | 1560 in³ | 25564 ×10³ mm³ |
| Strong-Axis Plastic Modulus | Zx | 1800 in³ | 29497 ×10³ mm³ |
| Strong-Axis Radius of Gyration | rx | 16.6 in | 421.6 mm |
| Weak-Axis Inertia | Iy | 1540 in⁴ | 641 ×10⁶ mm⁴ |
| Weak-Axis Elastic Modulus | Sy | 191 in³ | 3130 ×10³ mm³ |
| Weak-Axis Plastic Modulus | Zy | 300 in³ | 4916 ×10³ mm³ |
| Weak-Axis Radius of Gyration | ry | 3.64 in | 92.5 mm |
| Torsional Constant | J | 142 in⁴ | 59105 ×10³ mm⁴ |
| Warping Constant | Cw | 911310.2 in⁶ | 155482.3 ×10⁹ mm⁶ |
| Effective Radius of Gyration | rts | 4.38 in | 111.3 mm |
AISC 360-22 Design Capacities (Fy = 50 ksi / 345 MPa)
Plastic Moment Capacity (φMp)
6750 kip-ft
9158.7 kN·m (φ = 0.90)Nominal Shear Capacity (φVn)
1350.5 kips
6012.1 kN (φ = 0.90)Flange Slenderness (λf = bf / 2tf)
3.66
✓ Compact Flange (λf ≤ 9.15)Web Slenderness (λw = h / tw)
30
✓ Compact Web (λw ≤ 90.5)