Steel Beam Sizes / AISC / S-Shapes / S20x86

S20x86 Steel Beam Dimensions and Properties

AISC American standard beams · v16.0

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

Units

Section diagram

S20x86 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 86.00 lb/ft 128.00 kg/m
Depth, d 20.30 in 516.00 mm
Flange width, bf 7.06 in 179.00 mm
tw 0.660 in 16.800 mm
tf 0.920 in 23.400 mm
Area 25.30 in² 16,300.00 mm²
Ix 1,570.00 in⁴ 653,000,000 mm⁴
Iy 46.60 in⁴ 19,400,000 mm⁴
Sx 155.00 in³ 2,540,000 mm³
Sy 13.20 in³ 216,000.00 mm³
Zx 183.00 in³ 3,000,000 mm³
Zy 23.10 in³ 379,000.00 mm³
rx 7.89 in 200.00 mm
ry 1.36 in 34.50 mm
J 6.65 in⁴ 2,770,000 mm⁴
Cw 4,370.00 in⁶ 1,170,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus S20x86.

Lighter in S20

S20x75

Weight
75.0 lb/ft (-13%)
Depth
20.00 in (-1.5%)
Ix
1,280.0 in⁴ (-18%)

Heavier in S20

S20x96

Weight
96.0 lb/ft (+12%)
Depth
20.30 in (0.0%)
Ix
1,670.0 in⁴ (+6.4%)

Closest Iₓ in S20

S20x66

Weight
66.0 lb/ft (-23%)
Depth
20.00 in (-1.5%)
Ix
1,190.0 in⁴ (-24%)

Similar weight in S24

S24x90

Weight
90.0 lb/ft (+4.7%)
Depth
24.00 in (+18%)
Ix
2,250.0 in⁴ (+43%)
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Source: AISC Shapes Database v16.0 · Methodology