Rectangular and square HSS

HSS12X8X5/16 HSS304.8X203.2X7.9

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

Dimensions

Depthd
12in
Widthb
8in
Nominal thicknesstnom
0.3125in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
40.35lb/ft
Cross-sectional areaA
11.1in²

Strong axis x–x

Moment of inertiaIx
224in⁴
Elastic section modulusSx
37.4in³
Plastic section modulusZx
44.9in³
Radius of gyrationrx
4.5in

Weak axis y–y

Moment of inertiaIy
120in⁴
Elastic section modulusSy
30.1in³
Plastic section modulusZy
34.1in³
Radius of gyrationry
3.29in

Torsion and stability

Torsional constantJ
248in⁴
Torsional modulusC
52.4in³

Slenderness ratios

Wall slendernessb/t
24.5
Wall slendernessh/t
38.2

Equivalents in other standards