Rectangular and square HSS

HSS 203x203x13

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 = 203.2t = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
203.2mm
Widthb
203.2mm
Thicknesst
12.7mm
Outside corner radiusro
25.4mm

Mass and area

Mass per lengthm
72.71kg/m
Cross-sectional areaA
9,262mm²
Outside perimeterP
769.2mm

Strong axis x–x

Moment of inertiaIx
54.7110⁶ mm⁴
Elastic section modulusSx
538.510³ mm³
Plastic section modulusZx
651.110³ mm³
Radius of gyrationrx
76.86mm

Weak axis y–y

Moment of inertiaIy
54.7110⁶ mm⁴
Elastic section modulusSy
538.510³ mm³
Plastic section modulusZy
651.110³ mm³
Radius of gyrationry
76.86mm

Torsion and stability

Torsional constantJ
90,66610³ mm⁴

Equivalents in other standards