Rectangular and square HSS

HSS20X8X1/2 HSS508X203.2X12.7

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 = 20tdes = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
8in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
89.68lb/ft
Cross-sectional areaA
24.6in²

Strong axis x–x

Moment of inertiaIx
1,190in⁴
Elastic section modulusSx
119in³
Plastic section modulusZx
152in³
Radius of gyrationrx
6.96in

Weak axis y–y

Moment of inertiaIy
283in⁴
Elastic section modulusSy
70.8in³
Plastic section modulusZy
79.5in³
Radius of gyrationry
3.39in

Torsion and stability

Torsional constantJ
757in⁴
Torsional modulusC
137in³

Slenderness ratios

Wall slendernessb/t
14.2
Wall slendernessh/t
40

Equivalents in other standards