Rectangular and square HSS

HSS 508x406x16

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 = 406.4d = 508t = 15.88t = 15.88
Cross-section, to scaledimensions in mm

Dimensions

Depthd
508mm
Widthb
406.4mm
Thicknesst
15.88mm
Outside corner radiusro
31.75mm

Mass and area

Mass per lengthm
215kg/m
Cross-sectional areaA
27,384mm²
Outside perimeterP
1,774mm

Strong axis x–x

Moment of inertiaIx
1,02710⁶ mm⁴
Elastic section modulusSx
4,04210³ mm³
Plastic section modulusZx
4,81410³ mm³
Radius of gyrationrx
193.6mm

Weak axis y–y

Moment of inertiaIy
728.610⁶ mm⁴
Elastic section modulusSy
3,58610³ mm³
Plastic section modulusZy
4,13510³ mm³
Radius of gyrationry
163.1mm

Torsion and stability

Torsional constantJ
1,355,93010³ mm⁴

Equivalents in other standards