Steel Beam Sizes / AISC / S-Shapes / S20x75

S20x75 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

S20x75 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 75.00 lb/ft 112.00 kg/m
Depth, d 20.00 in 508.00 mm
Flange width, bf 6.39 in 162.00 mm
tw 0.635 in 16.100 mm
tf 0.795 in 20.200 mm
Area 22.00 in² 14,200.00 mm²
Ix 1,280.00 in⁴ 533,000,000 mm⁴
Iy 29.50 in⁴ 12,300,000 mm⁴
Sx 128.00 in³ 2,100,000 mm³
Sy 9.25 in³ 152,000.00 mm³
Zx 152.00 in³ 2,490,000 mm³
Zy 16.70 in³ 274,000.00 mm³
rx 7.62 in 194.00 mm
ry 1.16 in 29.50 mm
J 4.59 in⁴ 1,910,000 mm⁴
Cw 2,720.00 in⁶ 730,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus S20x75.

Lighter in S20

S20x66

Weight
66.0 lb/ft (-12%)
Depth
20.00 in (0.0%)
Ix
1,190.0 in⁴ (-7.0%)

Heavier in S20

S20x86

Weight
86.0 lb/ft (+15%)
Depth
20.30 in (+1.5%)
Ix
1,570.0 in⁴ (+23%)

Closest Iₓ in S20

S20x96

Weight
96.0 lb/ft (+28%)
Depth
20.30 in (+1.5%)
Ix
1,670.0 in⁴ (+30%)

Similar weight in S24

S24x80

Weight
80.0 lb/ft (+6.7%)
Depth
24.00 in (+20%)
Ix
2,100.0 in⁴ (+64%)
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Source: AISC Shapes Database v16.0 · Methodology