Rectangular and square HSS

HSS 305x305x6.4

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

Dimensions

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

Mass and area

Mass per lengthm
58.69kg/m
Cross-sectional areaA
7,477mm²
Outside perimeterP
1,197mm

Strong axis x–x

Moment of inertiaIx
110.210⁶ mm⁴
Elastic section modulusSx
723.210³ mm³
Plastic section modulusZx
832.810³ mm³
Radius of gyrationrx
121.4mm

Weak axis y–y

Moment of inertiaIy
110.210⁶ mm⁴
Elastic section modulusSy
723.210³ mm³
Plastic section modulusZy
832.810³ mm³
Radius of gyrationry
121.4mm

Torsion and stability

Torsional constantJ
170,95210³ mm⁴

Equivalents in other standards