Round HSS

HSS 660x13

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 = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
660.4mm
Thicknesst
12.7mm

Mass and area

Mass per lengthm
202.9kg/m
Cross-sectional areaA
25,842mm²
Outside perimeterP
2,075mm

Strong axis x–x

Moment of inertiaIx
1,35610⁶ mm⁴
Elastic section modulusSx
4,10610³ mm³
Plastic section modulusZx
5,32910³ mm³
Radius of gyrationrx
229mm

Weak axis y–y

Moment of inertiaIy
1,35610⁶ mm⁴
Elastic section modulusSy
4,10610³ mm³
Plastic section modulusZy
5,32910³ mm³
Radius of gyrationry
229mm

Torsion and stability

Torsional constantJ
2,711,33010³ mm⁴

Equivalents in other standards