Steel Beam Sizes / AISC / ST Tees / ST7.5x21.45
ST7.5x21.45 Steel Beam Dimensions and Properties
AISC American standard tees · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
ST7.5x21.45 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 21.45 lb/ft | 32.00 kg/m |
| Depth, d | 7.50 in | 191.00 mm |
| Flange width, bf | 5.50 in | 140.00 mm |
| tw | 0.411 in | 10.400 mm |
| tf | 0.622 in | 15.800 mm |
| Area | 6.30 in² | 4,060.00 mm² |
| Ix | 32.90 in⁴ | 13,700,000 mm⁴ |
| Iy | 7.13 in⁴ | 2,970,000 mm⁴ |
| Sx | 5.99 in³ | 98,200.00 mm³ |
| Sy | 2.59 in³ | 42,400.00 mm³ |
| Zx | 10.80 in³ | 177,000.00 mm³ |
| Zy | 4.54 in³ | 74,400.00 mm³ |
| rx | 2.29 in | 58.20 mm |
| ry | 1.06 in | 26.90 mm |
| J | 0.77 in⁴ | 318,000.00 mm⁴ |
| Cw | 1.00 in⁶ | 267,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus ST7.5x21.45.
Source: AISC Shapes Database v16.0 · Methodology