Steel Beam Sizes / AISC / HSS Square / HSS 20x20x1

HSS 20x20x1 Steel Beam Dimensions and Properties

AISC Square HSS · v16.0

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

Units

Section diagram

HSS 20x20x1 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 249.85 lb/ft 372.00 kg/m
Height 20.00 in 508.00 mm
Width 20.00 in 508.00 mm
Nominal tw 1.000 in 25.400 mm
Design tw 0.930 in 23.600 mm
Area 68.70 in² 44,300.00 mm²
Ix 4,100.00 in⁴ 1,710,000,000 mm⁴
Iy 4,100.00 in⁴ 1,710,000,000 mm⁴
Sx 410.00 in³ 6,720,000 mm³
Sy 410.00 in³ 6,720,000 mm³
Zx 486.00 in³ 7,960,000 mm³
Zy 486.00 in³ 7,960,000 mm³
rx 7.72 in 196.00 mm
ry 7.72 in 196.00 mm
J 6,600.00 in⁴ 2,750,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 20x20x1.

Lighter in Square HSS

HSS 22x22x7/8

Weight
244.9 lb/ft (-2.0%)
Depth
22.00 in (+10%)
Ix
4,970.0 in⁴ (+21%)

Heavier in Square HSS

HSS 22x22x1

Weight
277.1 lb/ft (+11%)
Depth
22.00 in (+10%)
Ix
5,550.0 in⁴ (+35%)

Closest Iₓ in Square HSS

HSS 22x22x3/4

Weight
212.0 lb/ft (-15%)
Depth
22.00 in (+10%)
Ix
4,350.0 in⁴ (+6.1%)
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Source: AISC Shapes Database v16.0 · Methodology