Round HSS

HSS 340x8.0

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 = 7.95t = 7.95
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
340.4mm
Thicknesst
7.95mm

Mass and area

Mass per lengthm
65.18kg/m
Cross-sectional areaA
8,303mm²
Outside perimeterP
1,069mm

Strong axis x–x

Moment of inertiaIx
114.810⁶ mm⁴
Elastic section modulusSx
674.410³ mm³
Plastic section modulusZx
878.810³ mm³
Radius of gyrationrx
117.6mm

Weak axis y–y

Moment of inertiaIy
114.810⁶ mm⁴
Elastic section modulusSy
674.410³ mm³
Plastic section modulusZy
878.810³ mm³
Radius of gyrationry
117.6mm

Torsion and stability

Torsional constantJ
229,55410³ mm⁴

Equivalents in other standards