Rectangular and square HSS

HSS 203x203x4.8

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

Depthd: 203.2mm
Widthb: 203.2mm
Thicknesst: 4.76mm
Outside corner radiusro: 9.52mm

Mass and area

Mass per lengthm: 29.2kg/m
Cross-sectional areaA: 3,720mm²
Outside perimeterP: 796.5mm

Strong axis x–x

Moment of inertiaIx: 24.2210⁶ mm⁴
Elastic section modulusSx: 238.410³ mm³
Plastic section modulusZx: 275.310³ mm³
Radius of gyrationrx: 80.69mm

Weak axis y–y

Moment of inertiaIy: 24.2210⁶ mm⁴
Elastic section modulusSy: 238.410³ mm³
Plastic section modulusZy: 275.310³ mm³
Radius of gyrationry: 80.69mm

Torsion and stability

Torsional constantJ: 37,72410³ mm⁴