Rectangular and square HSS

HSS8X4X5/8 HSS203.2X101.6X15.9

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 = 0.581tdes = 0.581
Cross-section, to scaledimensions in inches

Dimensions

Depthd
8in
Widthb
4in
Nominal thicknesstnom
0.625in
Design thicknesstdes
0.581in

Mass and area

Mass per lengthm
42.3lb/ft
Cross-sectional areaA
11.7in²

Strong axis x–x

Moment of inertiaIx
82in⁴
Elastic section modulusSx
20.5in³
Plastic section modulusZx
27.4in³
Radius of gyrationrx
2.64in

Weak axis y–y

Moment of inertiaIy
26.6in⁴
Elastic section modulusSy
13.3in³
Plastic section modulusZy
16.6in³
Radius of gyrationry
1.51in

Torsion and stability

Torsional constantJ
70.3in⁴
Torsional modulusC
28.7in³

Slenderness ratios

Wall slendernessb/t
3.88
Wall slendernessh/t
10.8

Equivalents in other standards