Round HSS

HSS6.625X0.188 HSS168.3X4.8

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 = 0.174tdes = 0.174
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
6.63in
Nominal thicknesstnom
0.188in
Design thicknesstdes
0.174in

Mass and area

Mass per lengthm
12.94lb/ft
Cross-sectional areaA
3.53in²

Strong axis x–x

Moment of inertiaIx
18.4in⁴
Elastic section modulusSx
5.54in³
Plastic section modulusZx
7.24in³
Radius of gyrationrx
2.28in

Weak axis y–y

Moment of inertiaIy
18.4in⁴
Elastic section modulusSy
5.54in³
Plastic section modulusZy
7.24in³
Radius of gyrationry
2.28in

Torsion and stability

Torsional constantJ
36.7in⁴
Torsional modulusC
11.1in³

Slenderness ratios

Wall slendernessD/t
38.1

Equivalents in other standards