Rectangular and square HSS

HSS 305x76x8.0

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 = 76.2d = 304.8t = 7.94t = 7.94
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
76.2mm
Thicknesst
7.94mm
Outside corner radiusro
15.88mm

Mass and area

Mass per lengthm
44.24kg/m
Cross-sectional areaA
5,636mm²
Outside perimeterP
734.7mm

Strong axis x–x

Moment of inertiaIx
54.8810⁶ mm⁴
Elastic section modulusSx
360.110³ mm³
Plastic section modulusZx
486.510³ mm³
Radius of gyrationrx
98.68mm

Weak axis y–y

Moment of inertiaIy
5.73710⁶ mm⁴
Elastic section modulusSy
150.610³ mm³
Plastic section modulusZy
173.710³ mm³
Radius of gyrationry
31.91mm

Torsion and stability

Torsional constantJ
18,27210³ mm⁴

Equivalents in other standards