Rectangular and square HSS

HSS 305x305x25

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 = 304.8d = 304.8t = 25.4t = 25.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
304.8mm
Thicknesst
25.4mm
Outside corner radiusro
50.8mm

Mass and area

Mass per lengthm
209.8kg/m
Cross-sectional areaA
26,726mm²
Outside perimeterP
1,132mm

Strong axis x–x

Moment of inertiaIx
336.310⁶ mm⁴
Elastic section modulusSx
2,20710³ mm³
Plastic section modulusZx
2,73710³ mm³
Radius of gyrationrx
112.2mm

Weak axis y–y

Moment of inertiaIy
336.310⁶ mm⁴
Elastic section modulusSy
2,20710³ mm³
Plastic section modulusZy
2,73710³ mm³
Radius of gyrationry
112.2mm

Torsion and stability

Torsional constantJ
575,55610³ mm⁴

Equivalents in other standards