W8x21 — Dimensions and Section Properties
Dimensions and key properties
- Weight
- = 21 lb/ft
- A
- = 6.16 in²
- d
- = 8.28 in
- Ix
- = 75.3 in⁴
- Sx
- = 18.2 in³
- Zx
- = 20.4 in³
- rx
- = 3.49 in
- ry
- = 1.26 in
Section properties
| Property | Value | Unit |
|---|---|---|
| Weight | 21 | lb/ft |
| A | 6.16 | in² |
| d | 8.28 | in |
| bf | 5.27 | in |
| tf | 0.4 | in |
| tw | 0.25 | in |
| Ix | 75.3 | in⁴ |
| Sx | 18.2 | in³ |
| Zx | 20.4 | in³ |
| rx | 3.49 | in |
| Iy | 9.77 | in⁴ |
| Sy | 3.71 | in³ |
| Zy | 5.69 | in³ |
| ry | 1.26 | in |
Other sizes in the W8 series
Relevant tools
- Steel Shape Properties Table
search and compare W8x21 against other sections
- Beam Shear, Moment and Deflection Diagram Calculator
find the moment this section has to carry, and how far it deflects under load
- ASTM A992
the grade most W-shapes are supplied in