Rectangular and square HSS

HSS 457x203x6.4

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.
xyb = 203.2d = 457.2t = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
457.2mm
Widthb
203.2mm
Thicknesst
6.35mm
Outside corner radiusro
12.7mm

Mass and area

Mass per lengthm
63.76kg/m
Cross-sectional areaA
8,122mm²
Outside perimeterP
1,299mm

Strong axis x–x

Moment of inertiaIx
218.710⁶ mm⁴
Elastic section modulusSx
956.810³ mm³
Plastic section modulusZx
1,18510³ mm³
Radius of gyrationrx
164.1mm

Weak axis y–y

Moment of inertiaIy
62.5410⁶ mm⁴
Elastic section modulusSy
615.510³ mm³
Plastic section modulusZy
676.310³ mm³
Radius of gyrationry
87.75mm

Torsion and stability

Torsional constantJ
156,25110³ mm⁴

Equivalents in other standards