Round HSS

HSS 305x13

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

Dimensions

Outside diameterD
304.8mm
Thicknesst
12.7mm

Mass and area

Mass per lengthm
91.49kg/m
Cross-sectional areaA
11,654mm²
Outside perimeterP
957.6mm

Strong axis x–x

Moment of inertiaIx
124.510⁶ mm⁴
Elastic section modulusSx
817.110³ mm³
Plastic section modulusZx
1,08410³ mm³
Radius of gyrationrx
103.4mm

Weak axis y–y

Moment of inertiaIy
124.510⁶ mm⁴
Elastic section modulusSy
817.110³ mm³
Plastic section modulusZy
1,08410³ mm³
Radius of gyrationry
103.4mm

Torsion and stability

Torsional constantJ
249,06310³ mm⁴

Equivalents in other standards