Round HSS

HSS 168x13

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 = 168.4t = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
168.4mm
Thicknesst
12.7mm

Mass and area

Mass per lengthm
48.77kg/m
Cross-sectional areaA
6,212mm²
Outside perimeterP
529mm

Strong axis x–x

Moment of inertiaIx
18.9510⁶ mm⁴
Elastic section modulusSx
225.110³ mm³
Plastic section modulusZx
308.610³ mm³
Radius of gyrationrx
55.23mm

Weak axis y–y

Moment of inertiaIy
18.9510⁶ mm⁴
Elastic section modulusSy
225.110³ mm³
Plastic section modulusZy
308.610³ mm³
Radius of gyrationry
55.23mm

Torsion and stability

Torsional constantJ
37,90010³ mm⁴

Equivalents in other standards