Steel Beam Sizes / AISC / ST Tees / ST2x3.85

ST2x3.85 Steel Beam Dimensions and Properties

AISC American standard tees · v16.0

Analyze in Beam Calculator Back to ST Tees

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

Units

Section diagram

ST2x3.85 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 3.85 lb/ft 5.75 kg/m
Depth, d 2.00 in 50.80 mm
Flange width, bf 2.66 in 67.60 mm
tw 0.193 in 4.900 mm
tf 0.293 in 7.440 mm
Area 1.13 in² 729.00 mm²
Ix 0.31 in⁴ 128,000.00 mm⁴
Iy 0.37 in⁴ 156,000.00 mm⁴
Sx 0.20 in³ 3,240.00 mm³
Sy 0.28 in³ 4,600.00 mm³
Zx 0.38 in³ 6,240.00 mm³
Zy 0.49 in³ 7,950.00 mm³
rx 0.52 in 13.30 mm
ry 0.58 in 14.60 mm
J 0.04 in⁴ 15,200.00 mm⁴
Cw 0.00 in⁶ 1,230,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus ST2x3.85.

Heavier in ST2

ST2x4.75

Weight
4.8 lb/ft (+23%)
Depth
2.00 in (0.0%)
Ix
0.5 in⁴ (+50%)

Closest Iₓ in ST2

ST2.5x5

Weight
5.0 lb/ft (+30%)
Depth
2.50 in (+25%)
Ix
0.7 in⁴ (+119%)

Similar weight in ST1

ST1.5x3.75

Weight
3.8 lb/ft (-2.6%)
Depth
1.50 in (-25%)
Ix
0.2 in⁴ (-35%)
Analyze in Beam Calculator Compare in ST Tees finder

Source: AISC Shapes Database v16.0 · Methodology