Round HSS

HSS 254x6.4

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 = 254t = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
254mm
Thicknesst
6.35mm

Mass and area

Mass per lengthm
38.78kg/m
Cross-sectional areaA
4,940mm²
Outside perimeterP
798mm

Strong axis x–x

Moment of inertiaIx
37.910⁶ mm⁴
Elastic section modulusSx
298.410³ mm³
Plastic section modulusZx
389.510³ mm³
Radius of gyrationrx
87.59mm

Weak axis y–y

Moment of inertiaIy
37.910⁶ mm⁴
Elastic section modulusSy
298.410³ mm³
Plastic section modulusZy
389.510³ mm³
Radius of gyrationry
87.59mm

Torsion and stability

Torsional constantJ
75,79910³ mm⁴

Equivalents in other standards