Steel Beam Sizes / AISC / HSS Rectangular / HSS 12x4x5/16

HSS 12x4x5/16 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

HSS 12x4x5/16 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 31.84 lb/ft 47.40 kg/m
Height 12.00 in 305.00 mm
Width 4.00 in 102.00 mm
Nominal tw 0.313 in 7.940 mm
Design tw 0.291 in 7.390 mm
Area 8.76 in² 5,650.00 mm²
Ix 144.00 in⁴ 59,900,000 mm⁴
Iy 25.20 in⁴ 10,500,000 mm⁴
Sx 24.10 in³ 395,000.00 mm³
Sy 12.60 in³ 206,000.00 mm³
Zx 31.30 in³ 513,000.00 mm³
Zy 14.20 in³ 233,000.00 mm³
rx 4.06 in 103.00 mm
ry 1.70 in 43.20 mm
J 72.40 in⁴ 30,100,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 12x4x5/16.

Lighter in Rectangular HSS

HSS 10x3-1/2x3/8

Weight
31.3 lb/ft (-1.7%)
Depth
10.00 in (-17%)
Ix
96.1 in⁴ (-33%)

Heavier in Rectangular HSS

HSS 10x4x3/8

Weight
32.6 lb/ft (+2.3%)
Depth
10.00 in (-17%)
Ix
104.0 in⁴ (-28%)

Closest Iₓ in Rectangular HSS

HSS 10x8x5/16

Weight
36.1 lb/ft (+13%)
Depth
10.00 in (-17%)
Ix
145.0 in⁴ (+0.7%)
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Source: AISC Shapes Database v16.0 · Methodology