Rectangular and square HSS

HSS 64x51x6.4

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 = 50.8d = 63.5t = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
63.5mm
Widthb
50.8mm
Thicknesst
6.35mm
Outside corner radiusro
12.7mm

Mass and area

Mass per lengthm
9.314kg/m
Cross-sectional areaA
1,186mm²
Outside perimeterP
206.8mm

Strong axis x–x

Moment of inertiaIx
0.571110⁶ mm⁴
Elastic section modulusSx
17.9910³ mm³
Plastic section modulusZx
23.4610³ mm³
Radius of gyrationrx
21.94mm

Weak axis y–y

Moment of inertiaIy
0.399110⁶ mm⁴
Elastic section modulusSy
15.7110³ mm³
Plastic section modulusZy
20.0210³ mm³
Radius of gyrationry
18.34mm

Torsion and stability

Torsional constantJ
840.210³ mm⁴

Equivalents in other standards