Round HSS

HSS12.750X0.250 HSS323.9X6.4

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 = 12.8tdes = 0.233tdes = 0.233
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
12.8in
Nominal thicknesstnom
0.25in
Design thicknesstdes
0.233in

Mass and area

Mass per lengthm
33.41lb/ft
Cross-sectional areaA
9.16in²

Strong axis x–x

Moment of inertiaIx
180in⁴
Elastic section modulusSx
28.2in³
Plastic section modulusZx
36.5in³
Radius of gyrationrx
4.43in

Weak axis y–y

Moment of inertiaIy
180in⁴
Elastic section modulusSy
28.2in³
Plastic section modulusZy
36.5in³
Radius of gyrationry
4.43in

Torsion and stability

Torsional constantJ
359in⁴
Torsional modulusC
56.3in³

Slenderness ratios

Wall slendernessD/t
54.7

Equivalents in other standards