Rectangular and square HSS

HSS 127x51x4.8

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 = 50.8d = 127t = 4.76t = 4.76
Cross-section, to scaledimensions in mm

Dimensions

Depthd
127mm
Widthb
50.8mm
Thicknesst
4.76mm
Outside corner radiusro
9.52mm

Mass and area

Mass per lengthm
12.12kg/m
Cross-sectional areaA
1,544mm²
Outside perimeterP
339.3mm

Strong axis x–x

Moment of inertiaIx
2.86510⁶ mm⁴
Elastic section modulusSx
45.1210³ mm³
Plastic section modulusZx
58.7510³ mm³
Radius of gyrationrx
43.08mm

Weak axis y–y

Moment of inertiaIy
0.663910⁶ mm⁴
Elastic section modulusSy
26.1410³ mm³
Plastic section modulusZy
30.4610³ mm³
Radius of gyrationry
20.74mm

Torsion and stability

Torsional constantJ
1,84210³ mm⁴

Equivalents in other standards