Steel Beam Sizes / CISC / HSS Rectangular / HA127×76×7.9
HA127×76×7.9 Steel Beam Dimensions and Properties
CISC Rectangular HSS · v12.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
HA127×76×7.9 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 | 14.90 lb/ft | 22.10 kg/m |
| Height | 5.00 in | 127.00 mm |
| Width | 3.00 in | 76.20 mm |
| Nominal tw | 0.313 in | 7.940 mm |
| Design tw | 0.281 in | 7.150 mm |
| Area | 3.98 in² | 2,570.00 mm² |
| Ix | 12.30 in⁴ | 5,120,000 mm⁴ |
| Iy | 5.48 in⁴ | 2,280,000 mm⁴ |
| Sx | 4.92 in³ | 80,600.00 mm³ |
| Sy | 3.65 in³ | 59,800.00 mm³ |
| Zx | 6.29 in³ | 103,000.00 mm³ |
| Zy | 4.37 in³ | 71,600.00 mm³ |
| rx | 1.76 in | 44.60 mm |
| ry | 1.17 in | 29.80 mm |
| J | 12.78 in⁴ | 5,320,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HA127×76×7.9.
Lighter in Rectangular HSS
HA102×76×9.5
- Weight
- 21.9 kg/m (-1.3%)
- Depth
- 101.6 mm (-20%)
- Ix
- 3,240,000 mm⁴ (-37%)
Heavier in Rectangular HSS
HA152×102×6.4
- Weight
- 23.2 kg/m (+4.7%)
- Depth
- 152.4 mm (+20%)
- Ix
- 8,450,000 mm⁴ (+65%)
Closest Iₓ in Rectangular HSS
HS152×102×3.2
- Weight
- 12.2 kg/m (-45%)
- Depth
- 152.4 mm (+20%)
- Ix
- 5,100,000 mm⁴ (-0.4%)
Source: CISC Structural Section Tables SST12.1 · v12.1 · ASTM A500 · Methodology