Round HSS

HSS6.625X0.375 HSS168.3X9.5

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.
xyD = 6.63tdes = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
6.63in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
25.06lb/ft
Cross-sectional areaA
6.88in²

Strong axis x–x

Moment of inertiaIx
34in⁴
Elastic section modulusSx
10.3in³
Plastic section modulusZx
13.8in³
Radius of gyrationrx
2.22in

Weak axis y–y

Moment of inertiaIy
34in⁴
Elastic section modulusSy
10.3in³
Plastic section modulusZy
13.8in³
Radius of gyrationry
2.22in

Torsion and stability

Torsional constantJ
68in⁴
Torsional modulusC
20.5in³

Slenderness ratios

Wall slendernessD/t
19

Equivalents in other standards