Round HSS

HSS18.000X0.250 HSS457.2X6.4

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 = 18tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
18in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
47.44lb/ft
Cross-sectional areaA
13in²

Strong axis x–x

Moment of inertiaIx
512in⁴
Elastic section modulusSx
56.9in³
Plastic section modulusZx
73.4in³
Radius of gyrationrx
6.28in

Weak axis y–y

Moment of inertiaIy
512in⁴
Elastic section modulusSy
56.9in³
Plastic section modulusZy
73.4in³
Radius of gyrationry
6.28in

Torsion and stability

Torsional constantJ
1,020in⁴
Torsional modulusC
114in³

Slenderness ratios

Wall slendernessD/t
77.4

Equivalents in other standards