Steel Beam Sizes / AISC / S-Shapes / S12x50

S12x50 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

S12x50 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 50.00 lb/ft 74.00 kg/m
Depth, d 12.00 in 305.00 mm
Flange width, bf 5.48 in 139.00 mm
tw 0.687 in 17.400 mm
tf 0.659 in 16.700 mm
Area 14.70 in² 9,480.00 mm²
Ix 303.00 in⁴ 126,000,000 mm⁴
Iy 15.60 in⁴ 6,490,000 mm⁴
Sx 50.60 in³ 829,000.00 mm³
Sy 5.69 in³ 93,200.00 mm³
Zx 60.90 in³ 998,000.00 mm³
Zy 10.30 in³ 169,000.00 mm³
rx 4.55 in 116.00 mm
ry 1.03 in 26.20 mm
J 2.77 in⁴ 1,150,000 mm⁴
Cw 501.00 in⁶ 135,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus S12x50.

Lighter in S12

S12x40.8

Weight
40.8 lb/ft (-18%)
Depth
12.00 in (0.0%)
Ix
270.0 in⁴ (-11%)

Closest Iₓ in S12

S12x35

Weight
35.0 lb/ft (-30%)
Depth
12.00 in (0.0%)
Ix
228.0 in⁴ (-25%)

Similar weight in S15

S15x50

Weight
50.0 lb/ft (0.0%)
Depth
15.00 in (+25%)
Ix
485.0 in⁴ (+60%)
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Source: AISC Shapes Database v16.0 · Methodology