Rectangular and square HSS

HSS20X4X3/8 HSS508X101.6X9.5

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 = 4d = 20tdes = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Depthd
20in
Widthb
4in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
58.1lb/ft
Cross-sectional areaA
16in²

Strong axis x–x

Moment of inertiaIx
657in⁴
Elastic section modulusSx
65.7in³
Plastic section modulusZx
89.3in³
Radius of gyrationrx
6.42in

Weak axis y–y

Moment of inertiaIy
47.6in⁴
Elastic section modulusSy
23.8in³
Plastic section modulusZy
26.8in³
Radius of gyrationry
1.73in

Torsion and stability

Torsional constantJ
156in⁴
Torsional modulusC
49.9in³

Slenderness ratios

Wall slendernessb/t
8.46
Wall slendernessh/t
54.3

Equivalents in other standards