Rectangular and square HSS

HSS12X8X5/8 HSS304.8X203.2X15.9

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 = 8d = 12tdes = 0.581tdes = 0.581
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12in
Widthb
8in
Nominal thicknesstnom
0.625in
Design thicknesstdes
0.581in

Mass and area

Mass per lengthm
76.33lb/ft
Cross-sectional areaA
21in²

Strong axis x–x

Moment of inertiaIx
397in⁴
Elastic section modulusSx
66.1in³
Plastic section modulusZx
82.1in³
Radius of gyrationrx
4.34in

Weak axis y–y

Moment of inertiaIy
210in⁴
Elastic section modulusSy
52.5in³
Plastic section modulusZy
61.9in³
Radius of gyrationry
3.16in

Torsion and stability

Torsional constantJ
454in⁴
Torsional modulusC
97.7in³

Slenderness ratios

Wall slendernessb/t
10.8
Wall slendernessh/t
17.7

Equivalents in other standards