Round HSS

HSS18.000X0.313 HSS457.2X7.9

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

Dimensions

Outside diameterD
18in
Nominal thicknesstnom
0.313in
Design thicknesstdes
0.291in

Mass and area

Mass per lengthm
59.09lb/ft
Cross-sectional areaA
16.2in²

Strong axis x–x

Moment of inertiaIx
634in⁴
Elastic section modulusSx
70.4in³
Plastic section modulusZx
91.2in³
Radius of gyrationrx
6.26in

Weak axis y–y

Moment of inertiaIy
634in⁴
Elastic section modulusSy
70.4in³
Plastic section modulusZy
91.2in³
Radius of gyrationry
6.26in

Torsion and stability

Torsional constantJ
1,270in⁴
Torsional modulusC
141in³

Slenderness ratios

Wall slendernessD/t
61.9

Equivalents in other standards