Rectangular and square HSS

HSS 305x254x6.4

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 = 254d = 304.8t = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
254mm
Thicknesst
6.35mm
Outside corner radiusro
12.7mm

Mass and area

Mass per lengthm
53.63kg/m
Cross-sectional areaA
6,832mm²
Outside perimeterP
1,096mm

Strong axis x–x

Moment of inertiaIx
95.8510⁶ mm⁴
Elastic section modulusSx
628.910³ mm³
Plastic section modulusZx
736.610³ mm³
Radius of gyrationrx
118.4mm

Weak axis y–y

Moment of inertiaIy
72.5910⁶ mm⁴
Elastic section modulusSy
571.610³ mm³
Plastic section modulusZy
651.110³ mm³
Radius of gyrationry
103.1mm

Torsion and stability

Torsional constantJ
128,79410³ mm⁴

Equivalents in other standards