Steel Beam Sizes / AISC / ST Tees / ST12x50
ST12x50 Steel Beam Dimensions and Properties
AISC American standard tees · v16.0
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
ST12x50 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 | 50.00 lb/ft | 74.50 kg/m |
| Depth, d | 12.00 in | 305.00 mm |
| Flange width, bf | 7.25 in | 184.00 mm |
| tw | 0.745 in | 18.900 mm |
| tf | 0.870 in | 22.100 mm |
| Area | 14.70 in² | 9,480.00 mm² |
| Ix | 215.00 in⁴ | 89,500,000 mm⁴ |
| Iy | 23.70 in⁴ | 9,860,000 mm⁴ |
| Sx | 26.30 in³ | 431,000.00 mm³ |
| Sy | 6.55 in³ | 107,000.00 mm³ |
| Zx | 47.50 in³ | 778,000.00 mm³ |
| Zy | 12.00 in³ | 197,000.00 mm³ |
| rx | 3.83 in | 97.30 mm |
| ry | 1.27 in | 32.30 mm |
| J | 3.76 in⁴ | 1,570,000 mm⁴ |
| Cw | 19.50 in⁶ | 5,240,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus ST12x50.
Lighter in ST12
ST12x45
- Weight
- 45.0 lb/ft (-10%)
- Depth
- 12.00 in (0.0%)
- Ix
- 190.0 in⁴ (-12%)
Heavier in ST12
ST12x53
- Weight
- 53.0 lb/ft (+6.0%)
- Depth
- 12.30 in (+2.5%)
- Ix
- 216.0 in⁴ (+0.5%)
Closest Iₓ in ST12
ST12x60.5
- Weight
- 60.5 lb/ft (+21%)
- Depth
- 12.30 in (+2.5%)
- Ix
- 259.0 in⁴ (+20%)
Similar weight in ST10
ST10x48
- Weight
- 48.0 lb/ft (-4.0%)
- Depth
- 10.20 in (-15%)
- Ix
- 143.0 in⁴ (-33%)
Source: AISC Shapes Database v16.0 · Methodology