Rectangular and square HSS

HSS20X6X3/8 HSS508X152.4X9.5

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 = 6d = 20tdes = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
6in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
63.21lb/ft
Cross-sectional areaA
17.3in²

Strong axis x–x

Moment of inertiaIx
792in⁴
Elastic section modulusSx
79.2in³
Plastic section modulusZx
103in³
Radius of gyrationrx
6.76in

Weak axis y–y

Moment of inertiaIy
118in⁴
Elastic section modulusSy
39.2in³
Plastic section modulusZy
43.4in³
Radius of gyrationry
2.6in

Torsion and stability

Torsional constantJ
345in⁴
Torsional modulusC
77.3in³

Slenderness ratios

Wall slendernessb/t
14.2
Wall slendernessh/t
54.3

Equivalents in other standards