Steel Beam Sizes / AISC / HSS Rectangular / HSS 20x12x1/2

HSS 20x12x1/2 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

Analyze in Beam Calculator Back to HSS Rectangular

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

Units

Section diagram

HSS 20x12x1/2 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 103.30 lb/ft 153.00 kg/m
Height 20.00 in 508.00 mm
Width 12.00 in 305.00 mm
Nominal tw 0.500 in 12.700 mm
Design tw 0.465 in 11.800 mm
Area 28.30 in² 18,300.00 mm²
Ix 1,550.00 in⁴ 645,000,000 mm⁴
Iy 705.00 in⁴ 293,000,000 mm⁴
Sx 155.00 in³ 2,540,000 mm³
Sy 117.00 in³ 1,920,000 mm³
Zx 188.00 in³ 3,080,000 mm³
Zy 132.00 in³ 2,160,000 mm³
rx 7.39 in 188.00 mm
ry 4.99 in 127.00 mm
J 1,540.00 in⁴ 641,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 20x12x1/2.

Lighter in Rectangular HSS

HSS 14x12x5/8

Weight
101.9 lb/ft (-1.4%)
Depth
14.00 in (-30%)
Ix
792.0 in⁴ (-49%)

Heavier in Rectangular HSS

HSS 22x20x3/8

Weight
104.0 lb/ft (+0.7%)
Depth
22.00 in (+10%)
Ix
2,160.0 in⁴ (+39%)

Closest Iₓ in Rectangular HSS

HSS 22x16x5/16

Weight
78.6 lb/ft (-24%)
Depth
22.00 in (+10%)
Ix
1,550.0 in⁴ (0.0%)
Analyze in Beam Calculator Compare in HSS Rectangular finder

Source: AISC Shapes Database v16.0 · Methodology