Round HSS

HSS 300x13

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 = 299.7t = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD
299.7mm
Thicknesst
12.7mm

Mass and area

Mass per lengthm
89.89kg/m
Cross-sectional areaA
11,451mm²
Outside perimeterP
941.5mm

Strong axis x–x

Moment of inertiaIx
118.110⁶ mm⁴
Elastic section modulusSx
788.310³ mm³
Plastic section modulusZx
1,04710³ mm³
Radius of gyrationrx
101.6mm

Weak axis y–y

Moment of inertiaIy
118.110⁶ mm⁴
Elastic section modulusSy
788.310³ mm³
Plastic section modulusZy
1,04710³ mm³
Radius of gyrationry
101.6mm

Torsion and stability

Torsional constantJ
236,25910³ mm⁴

Equivalents in other standards