Round HSS

HSS 340x16

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 = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
340.4mm
Thicknesst
15.88mm

Mass and area

Mass per lengthm
127.1kg/m
Cross-sectional areaA
16,190mm²
Outside perimeterP
1,069mm

Strong axis x–x

Moment of inertiaIx
213.610⁶ mm⁴
Elastic section modulusSx
1,25510³ mm³
Plastic section modulusZx
1,67410³ mm³
Radius of gyrationrx
114.9mm

Weak axis y–y

Moment of inertiaIy
213.610⁶ mm⁴
Elastic section modulusSy
1,25510³ mm³
Plastic section modulusZy
1,67410³ mm³
Radius of gyrationry
114.9mm

Torsion and stability

Torsional constantJ
427,27110³ mm⁴

Equivalents in other standards