Round HSS

HSS7.000X0.250 HSS177.8X6.4

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 = 7tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
7in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
18.04lb/ft
Cross-sectional areaA
4.95in²

Strong axis x–x

Moment of inertiaIx
28.4in⁴
Elastic section modulusSx
8.11in³
Plastic section modulusZx
10.7in³
Radius of gyrationrx
2.39in

Weak axis y–y

Moment of inertiaIy
28.4in⁴
Elastic section modulusSy
8.11in³
Plastic section modulusZy
10.7in³
Radius of gyrationry
2.39in

Torsion and stability

Torsional constantJ
56.8in⁴
Torsional modulusC
16.2in³

Slenderness ratios

Wall slendernessD/t
30

Equivalents in other standards