Rectangular and square HSS

HSS12X4X5/16 HSS304.8X101.6X7.9

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 = 12tdes = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12in
Widthb
4in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
31.84lb/ft
Cross-sectional areaA
8.76in²

Strong axis x–x

Moment of inertiaIx
144in⁴
Elastic section modulusSx
24.1in³
Plastic section modulusZx
31.3in³
Radius of gyrationrx
4.06in

Weak axis y–y

Moment of inertiaIy
25.2in⁴
Elastic section modulusSy
12.6in³
Plastic section modulusZy
14.2in³
Radius of gyrationry
1.7in

Torsion and stability

Torsional constantJ
72.4in⁴
Torsional modulusC
25.2in³

Slenderness ratios

Wall slendernessb/t
10.7
Wall slendernessh/t
38.2

Equivalents in other standards