Round HSS

HSS 254x13

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

Dimensions

Outside diameterD
254mm
Thicknesst
12.7mm

Mass and area

Mass per lengthm
75.58kg/m
Cross-sectional areaA
9,627mm²
Outside perimeterP
798mm

Strong axis x–x

Moment of inertiaIx
70.2610⁶ mm⁴
Elastic section modulusSx
553.310³ mm³
Plastic section modulusZx
740.110³ mm³
Radius of gyrationrx
85.43mm

Weak axis y–y

Moment of inertiaIy
70.2610⁶ mm⁴
Elastic section modulusSy
553.310³ mm³
Plastic section modulusZy
740.110³ mm³
Radius of gyrationry
85.43mm

Torsion and stability

Torsional constantJ
140,52910³ mm⁴

Equivalents in other standards