Rectangular and square HSS

HSS20X12X1/2 HSS508X304.8X12.7

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 = 12d = 20tdes = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
12in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
103.3lb/ft
Cross-sectional areaA
28.3in²

Strong axis x–x

Moment of inertiaIx
1,550in⁴
Elastic section modulusSx
155in³
Plastic section modulusZx
188in³
Radius of gyrationrx
7.39in

Weak axis y–y

Moment of inertiaIy
705in⁴
Elastic section modulusSy
117in³
Plastic section modulusZy
132in³
Radius of gyrationry
4.99in

Torsion and stability

Torsional constantJ
1,540in⁴
Torsional modulusC
209in³

Slenderness ratios

Wall slendernessb/t
22.8
Wall slendernessh/t
40

Equivalents in other standards