Round HSS

HSS 305x16

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 = 304.8t = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
304.8mm
Thicknesst
15.88mm

Mass and area

Mass per lengthm
113.1kg/m
Cross-sectional areaA
14,414mm²
Outside perimeterP
957.6mm

Strong axis x–x

Moment of inertiaIx
150.910⁶ mm⁴
Elastic section modulusSx
989.810³ mm³
Plastic section modulusZx
1,32710³ mm³
Radius of gyrationrx
102.3mm

Weak axis y–y

Moment of inertiaIy
150.910⁶ mm⁴
Elastic section modulusSy
989.810³ mm³
Plastic section modulusZy
1,32710³ mm³
Radius of gyrationry
102.3mm

Torsion and stability

Torsional constantJ
301,70510³ mm⁴

Equivalents in other standards