Rectangular and square HSS

HSS20X12X1 HSS508X304.8X25.4

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 = 12d = 20tdes = 0.93tdes = 0.93
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
12in
Nominal thicknesstnom
1in
Design thicknesstdes
0.93in

Mass and area

Mass per lengthm
195.4lb/ft
Cross-sectional areaA
53.8in²

Strong axis x–x

Moment of inertiaIx
2,740in⁴
Elastic section modulusSx
274in³
Plastic section modulusZx
344in³
Radius of gyrationrx
7.14in

Weak axis y–y

Moment of inertiaIy
1,230in⁴
Elastic section modulusSy
205in³
Plastic section modulusZy
241in³
Radius of gyrationry
4.78in

Torsion and stability

Torsional constantJ
2,820in⁴
Torsional modulusC
390in³

Slenderness ratios

Wall slendernessb/t
9.9
Wall slendernessh/t
18.5

Equivalents in other standards