Round HSS

HSS 340x4.8

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 = 340.4t = 4.78t = 4.78
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
340.4mm
Thicknesst
4.78mm

Mass and area

Mass per lengthm
39.56kg/m
Cross-sectional areaA
5,040mm²
Outside perimeterP
1,069mm

Strong axis x–x

Moment of inertiaIx
70.9810⁶ mm⁴
Elastic section modulusSx
41710³ mm³
Plastic section modulusZx
538.510³ mm³
Radius of gyrationrx
118.7mm

Weak axis y–y

Moment of inertiaIy
70.9810⁶ mm⁴
Elastic section modulusSy
41710³ mm³
Plastic section modulusZy
538.510³ mm³
Radius of gyrationry
118.7mm

Torsion and stability

Torsional constantJ
141,95510³ mm⁴

Equivalents in other standards