Rectangular and square HSS

HSS 178x127x8.0

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 = 127d = 177.8t = 7.94t = 7.94
Cross-section, to scaledimensions in mm

Dimensions

Depthd
177.8mm
Widthb
127mm
Thicknesst
7.94mm
Outside corner radiusro
15.88mm

Mass and area

Mass per lengthm
34.74kg/m
Cross-sectional areaA
4,426mm²
Outside perimeterP
582.3mm

Strong axis x–x

Moment of inertiaIx
18.9410⁶ mm⁴
Elastic section modulusSx
21310³ mm³
Plastic section modulusZx
261.210³ mm³
Radius of gyrationrx
65.41mm

Weak axis y–y

Moment of inertiaIy
11.2110⁶ mm⁴
Elastic section modulusSy
176.610³ mm³
Plastic section modulusZy
20710³ mm³
Radius of gyrationry
50.34mm

Torsion and stability

Torsional constantJ
23,11710³ mm⁴

Equivalents in other standards