Rectangular and square HSS

HSS 203x51x4.8

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.
xyb = 50.8d = 203.2t = 4.76t = 4.76
Cross-section, to scaledimensions in mm

Dimensions

Depthd
203.2mm
Widthb
50.8mm
Thicknesst
4.76mm
Outside corner radiusro
9.52mm

Mass and area

Mass per lengthm
17.81kg/m
Cross-sectional areaA
2,269mm²
Outside perimeterP
491.7mm

Strong axis x–x

Moment of inertiaIx
9.93410⁶ mm⁴
Elastic section modulusSx
97.7810³ mm³
Plastic section modulusZx
131.410³ mm³
Radius of gyrationrx
66.17mm

Weak axis y–y

Moment of inertiaIy
1.0510⁶ mm⁴
Elastic section modulusSy
41.3210³ mm³
Plastic section modulusZy
47.1610³ mm³
Radius of gyrationry
21.51mm

Torsion and stability

Torsional constantJ
3,31910³ mm⁴

Equivalents in other standards