Rectangular and square HSS

HSS8X4X5/16 HSS203.2X101.6X7.9

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xyb = 4d = 8tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
8in
Widthb
4in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
23.34lb/ft
Cross-sectional areaA
6.43in²

Strong axis x–x

Moment of inertiaIx
51in⁴
Elastic section modulusSx
12.8in³
Plastic section modulusZx
16.1in³
Radius of gyrationrx
2.82in

Weak axis y–y

Moment of inertiaIy
17.2in⁴
Elastic section modulusSy
8.58in³
Plastic section modulusZy
9.91in³
Radius of gyrationry
1.63in

Torsion and stability

Torsional constantJ
42.6in⁴
Torsional modulusC
16.5in³

Slenderness ratios

Wall slendernessb/t
10.7
Wall slendernessh/t
24.5

Equivalents in other standards