Round HSS

HSS 178x13

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 = 177.8t = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
177.8mm
Thicknesst
12.7mm

Mass and area

Mass per lengthm
51.71kg/m
Cross-sectional areaA
6,587mm²
Outside perimeterP
558.6mm

Strong axis x–x

Moment of inertiaIx
22.5810⁶ mm⁴
Elastic section modulusSx
25410³ mm³
Plastic section modulusZx
346.910³ mm³
Radius of gyrationrx
58.54mm

Weak axis y–y

Moment of inertiaIy
22.5810⁶ mm⁴
Elastic section modulusSy
25410³ mm³
Plastic section modulusZy
346.910³ mm³
Radius of gyrationry
58.54mm

Torsion and stability

Torsional constantJ
45,15410³ mm⁴

Equivalents in other standards