Round HSS

HSS6.625X0.312 HSS168.3X7.9

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 = 0.291tdes = 0.291
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
6.63in
Nominal thicknesstnom
0.312in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
21.06lb/ft
Cross-sectional areaA
5.79in²

Strong axis x–x

Moment of inertiaIx
29.1in⁴
Elastic section modulusSx
8.79in³
Plastic section modulusZx
11.7in³
Radius of gyrationrx
2.24in

Weak axis y–y

Moment of inertiaIy
29.1in⁴
Elastic section modulusSy
8.79in³
Plastic section modulusZy
11.7in³
Radius of gyrationry
2.24in

Torsion and stability

Torsional constantJ
58.2in⁴
Torsional modulusC
17.6in³

Slenderness ratios

Wall slendernessD/t
22.8

Equivalents in other standards