Round HSS

HSS12.750X0.375 HSS323.9X9.5

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 = 0.349tdes = 0.349
Cross-section, to scaledimensions in inches

Dimensions

Outside diameterD
12.8in
Nominal thicknesstnom
0.375in
Design thicknesstdes
0.349in

Mass and area

Mass per lengthm
49.61lb/ft
Cross-sectional areaA
13.6in²

Strong axis x–x

Moment of inertiaIx
262in⁴
Elastic section modulusSx
41in³
Plastic section modulusZx
53.7in³
Radius of gyrationrx
4.39in

Weak axis y–y

Moment of inertiaIy
262in⁴
Elastic section modulusSy
41in³
Plastic section modulusZy
53.7in³
Radius of gyrationry
4.39in

Torsion and stability

Torsional constantJ
523in⁴
Torsional modulusC
82.1in³

Slenderness ratios

Wall slendernessD/t
36.5

Equivalents in other standards