Rectangular and square HSS

HSS20X20X3/8 HSS508X508X9.5

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

Dimensions

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

Mass and area

Mass per lengthm
98.94lb/ft
Cross-sectional areaA
27.1in²

Strong axis x–x

Moment of inertiaIx
1,740in⁴
Elastic section modulusSx
174in³
Plastic section modulusZx
199in³
Radius of gyrationrx
8in

Weak axis y–y

Moment of inertiaIy
1,740in⁴
Elastic section modulusSy
174in³
Plastic section modulusZy
199in³
Radius of gyrationry
8in

Torsion and stability

Torsional constantJ
2,680in⁴
Torsional modulusC
269in³

Slenderness ratios

Wall slendernessb/t
54.3
Wall slendernessh/t
54.3

Equivalents in other standards