Round HSS

HSS18.000X0.875 HSS457.2X22.2

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 = 0.814tdes = 0.814
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
18in
Nominal thicknesstnom
0.875in
Design thicknesstdes
0.814in

Mass and area

Mass per lengthm
160.2lb/ft
Cross-sectional areaA
43.9in²

Strong axis x–x

Moment of inertiaIx
1,630in⁴
Elastic section modulusSx
181in³
Plastic section modulusZx
241in³
Radius of gyrationrx
6.08in

Weak axis y–y

Moment of inertiaIy
1,630in⁴
Elastic section modulusSy
181in³
Plastic section modulusZy
241in³
Radius of gyrationry
6.08in

Torsion and stability

Torsional constantJ
3,250in⁴
Torsional modulusC
360in³

Slenderness ratios

Wall slendernessD/t
22.1

Equivalents in other standards