Round HSS

HSS18.000X0.750 HSS457.2X19.0

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 = 0.698tdes = 0.698
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
18in
Nominal thicknesstnom
0.75in
Design thicknesstdes
0.698in

Mass and area

Mass per lengthm
138.3lb/ft
Cross-sectional areaA
37.9in²

Strong axis x–x

Moment of inertiaIx
1,420in⁴
Elastic section modulusSx
158in³
Plastic section modulusZx
209in³
Radius of gyrationrx
6.12in

Weak axis y–y

Moment of inertiaIy
1,420in⁴
Elastic section modulusSy
158in³
Plastic section modulusZy
209in³
Radius of gyrationry
6.12in

Torsion and stability

Torsional constantJ
2,840in⁴
Torsional modulusC
315in³

Slenderness ratios

Wall slendernessD/t
25.8

Equivalents in other standards