Rectangular and square HSS

HSS 406x254x8.0

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 = 254d = 406.4t = 7.94t = 7.94
Cross-section, to scaledimensions in mm

Dimensions

Depthd
406.4mm
Widthb
254mm
Thicknesst
7.94mm
Outside corner radiusro
15.88mm

Mass and area

Mass per lengthm
79.07kg/m
Cross-sectional areaA
10,073mm²
Outside perimeterP
1,294mm

Strong axis x–x

Moment of inertiaIx
232.310⁶ mm⁴
Elastic section modulusSx
1,14310³ mm³
Plastic section modulusZx
1,37610³ mm³
Radius of gyrationrx
151.9mm

Weak axis y–y

Moment of inertiaIy
11310⁶ mm⁴
Elastic section modulusSy
89010³ mm³
Plastic section modulusZy
998.710³ mm³
Radius of gyrationry
105.9mm

Torsion and stability

Torsional constantJ
240,27810³ mm⁴

Equivalents in other standards