Rectangular and square HSS

HSS 305x254x8.0

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 = 254d = 304.8t = 7.94t = 7.94
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
254mm
Thicknesst
7.94mm
Outside corner radiusro
15.88mm

Mass and area

Mass per lengthm
66.4kg/m
Cross-sectional areaA
8,459mm²
Outside perimeterP
1,090mm

Strong axis x–x

Moment of inertiaIx
117.110⁶ mm⁴
Elastic section modulusSx
768.410³ mm³
Plastic section modulusZx
905.610³ mm³
Radius of gyrationrx
117.7mm

Weak axis y–y

Moment of inertiaIy
88.610⁶ mm⁴
Elastic section modulusSy
697.610³ mm³
Plastic section modulusZy
800.210³ mm³
Radius of gyrationry
102.3mm

Torsion and stability

Torsional constantJ
158,70610³ mm⁴

Equivalents in other standards