Round HSS

HSS18.000X0.625 HSS457.2X15.9

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 = 18tdes = 0.581tdes = 0.581
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
18in
Nominal thicknesstnom
0.625in
Design thicknesstdes
0.581in

Mass and area

Mass per lengthm
116.1lb/ft
Cross-sectional areaA
31.8in²

Strong axis x–x

Moment of inertiaIx
1,210in⁴
Elastic section modulusSx
134in³
Plastic section modulusZx
176in³
Radius of gyrationrx
6.16in

Weak axis y–y

Moment of inertiaIy
1,210in⁴
Elastic section modulusSy
134in³
Plastic section modulusZy
176in³
Radius of gyrationry
6.16in

Torsion and stability

Torsional constantJ
2,420in⁴
Torsional modulusC
268in³

Slenderness ratios

Wall slendernessD/t
31

Equivalents in other standards