Rectangular and square HSS

HSS12X4X5/8 HSS304.8X101.6X15.9

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

Dimensions

Depthd
12in
Widthb
4in
Nominal thicknesstnom
0.625in
Design thicknesstdes
0.581in

Mass and area

Mass per lengthm
59.32lb/ft
Cross-sectional areaA
16.4in²

Strong axis x–x

Moment of inertiaIx
245in⁴
Elastic section modulusSx
40.8in³
Plastic section modulusZx
55.5in³
Radius of gyrationrx
3.87in

Weak axis y–y

Moment of inertiaIy
40.4in⁴
Elastic section modulusSy
20.2in³
Plastic section modulusZy
24.5in³
Radius of gyrationry
1.57in

Torsion and stability

Torsional constantJ
122in⁴
Torsional modulusC
44.6in³

Slenderness ratios

Wall slendernessb/t
3.88
Wall slendernessh/t
17.7

Equivalents in other standards