Rectangular and square HSS

HSS 305x76x4.8

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 = 4.76t = 4.76
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
76.2mm
Thicknesst
4.76mm
Outside corner radiusro
9.52mm

Mass and area

Mass per lengthm
27.3kg/m
Cross-sectional areaA
3,478mm²
Outside perimeterP
745.7mm

Strong axis x–x

Moment of inertiaIx
35.4110⁶ mm⁴
Elastic section modulusSx
232.410³ mm³
Plastic section modulusZx
307.510³ mm³
Radius of gyrationrx
100.9mm

Weak axis y–y

Moment of inertiaIy
3.86210⁶ mm⁴
Elastic section modulusSy
101.410³ mm³
Plastic section modulusZy
112.110³ mm³
Radius of gyrationry
33.32mm

Torsion and stability

Torsional constantJ
11,95010³ mm⁴

Equivalents in other standards