Steel Beam Sizes / AISC / W-Shapes / W21 / W21x83

W21x83 Steel Beam Dimensions and Properties

AISC Wide flange · v16.0

Analyze in Beam Calculator Back to W-Shapes All W21

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

Units

Section diagram

W21x83 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 83.00 lb/ft 123.00 kg/m
Depth, d 21.40 in 544.00 mm
Flange width, bf 8.36 in 212.00 mm
tw 0.515 in 13.100 mm
tf 0.835 in 21.200 mm
Area 24.40 in² 15,700.00 mm²
Ix 1,830.00 in⁴ 762,000,000 mm⁴
Iy 81.40 in⁴ 33,900,000 mm⁴
Sx 171.00 in³ 2,800,000 mm³
Sy 19.50 in³ 320,000.00 mm³
Zx 196.00 in³ 3,210,000 mm³
Zy 30.50 in³ 500,000.00 mm³
rx 8.67 in 220.00 mm
ry 1.83 in 46.50 mm
J 4.34 in⁴ 1,810,000 mm⁴
Cw 8,630.00 in⁶ 2,320,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus W21x83.

Browse W21 series →

Lighter in W21

W21x73

Weight
73.0 lb/ft (-12%)
Depth
21.20 in (-0.9%)
Ix
1,600.0 in⁴ (-13%)

Heavier in W21

W21x93

Weight
93.0 lb/ft (+12%)
Depth
21.60 in (+0.9%)
Ix
2,070.0 in⁴ (+13%)

Closest Iₓ in W21

W21x68

Weight
68.0 lb/ft (-18%)
Depth
21.10 in (-1.4%)
Ix
1,480.0 in⁴ (-19%)

Similar weight in W24

W24x84

Weight
84.0 lb/ft (+1.2%)
Depth
24.10 in (+13%)
Ix
2,370.0 in⁴ (+30%)
Analyze in Beam Calculator Compare in W-Shapes finder

Source: AISC Shapes Database v16.0 · Methodology