Round HSS

HSS6.625X0.250 HSS168.3X6.4

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 = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
6.63in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
17.04lb/ft
Cross-sectional areaA
4.68in²

Strong axis x–x

Moment of inertiaIx
23.9in⁴
Elastic section modulusSx
7.22in³
Plastic section modulusZx
9.52in³
Radius of gyrationrx
2.26in

Weak axis y–y

Moment of inertiaIy
23.9in⁴
Elastic section modulusSy
7.22in³
Plastic section modulusZy
9.52in³
Radius of gyrationry
2.26in

Torsion and stability

Torsional constantJ
47.9in⁴
Torsional modulusC
14.4in³

Slenderness ratios

Wall slendernessD/t
28.4

Equivalents in other standards