Round HSS

HSS 660x16

Standard: CSA G40.20/G40.21Source: Calculated (exact engine)
Calculated: design thickness = nominal thickness (CSA G40.20, Class C), outside radius 2t. Range derived from ASTM A500 sizes — cross-check with the CISC tables.
xyD = 660.4t = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
660.4mm
Thicknesst
15.88mm

Mass and area

Mass per lengthm
252.4kg/m
Cross-sectional areaA
32,154mm²
Outside perimeterP
2,075mm

Strong axis x–x

Moment of inertiaIx
1,67110⁶ mm⁴
Elastic section modulusSx
5,05910³ mm³
Plastic section modulusZx
6,59810³ mm³
Radius of gyrationrx
227.9mm

Weak axis y–y

Moment of inertiaIy
1,67110⁶ mm⁴
Elastic section modulusSy
5,05910³ mm³
Plastic section modulusZy
6,59810³ mm³
Radius of gyrationry
227.9mm

Torsion and stability

Torsional constantJ
3,341,28010³ mm⁴

Equivalents in other standards