Round HSS

HSS6.625X0.280 HSS168.3X7.1

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 = 0.26tdes = 0.26
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
6.63in
Nominal thicknesstnom
0.28in
Design thicknesstdes
0.26in

Mass and area

Mass per lengthm
18.99lb/ft
Cross-sectional areaA
5.2in²

Strong axis x–x

Moment of inertiaIx
26.4in⁴
Elastic section modulusSx
7.96in³
Plastic section modulusZx
10.5in³
Radius of gyrationrx
2.25in

Weak axis y–y

Moment of inertiaIy
26.4in⁴
Elastic section modulusSy
7.96in³
Plastic section modulusZy
10.5in³
Radius of gyrationry
2.25in

Torsion and stability

Torsional constantJ
52.7in⁴
Torsional modulusC
15.9in³

Slenderness ratios

Wall slendernessD/t
25.5

Equivalents in other standards