Round HSS

HSS18.000X0.500 HSS457.2X12.7

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 = 0.465tdes = 0.465
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
18in
Nominal thicknesstnom
0.5in
Design thicknesstdes
0.465in

Mass and area

Mass per lengthm
93.54lb/ft
Cross-sectional areaA
25.6in²

Strong axis x–x

Moment of inertiaIx
985in⁴
Elastic section modulusSx
109in³
Plastic section modulusZx
143in³
Radius of gyrationrx
6.2in

Weak axis y–y

Moment of inertiaIy
985in⁴
Elastic section modulusSy
109in³
Plastic section modulusZy
143in³
Radius of gyrationry
6.2in

Torsion and stability

Torsional constantJ
1,970in⁴
Torsional modulusC
219in³

Slenderness ratios

Wall slendernessD/t
38.7

Equivalents in other standards