Round HSS

HSS 245x13

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.

Cross-section, to scaledimensions in mm

Dimensions

Outside diameterD: 244.6mm
Thicknesst: 12.7mm

Mass and area

Mass per lengthm: 72.63kg/m
Cross-sectional areaA: 9,252mm²
Outside perimeterP: 768.4mm

Strong axis x–x

Moment of inertiaIx: 62.3810⁶ mm⁴
Elastic section modulusSx: 510.110³ mm³
Plastic section modulusZx: 683.710³ mm³
Radius of gyrationrx: 82.11mm

Weak axis y–y

Moment of inertiaIy: 62.3810⁶ mm⁴
Elastic section modulusSy: 510.110³ mm³
Plastic section modulusZy: 683.710³ mm³
Radius of gyrationry: 82.11mm

Torsion and stability

Torsional constantJ: 124,76610³ mm⁴