Rectangular and square HSS

HSS 356x254x6.4

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 = 355.6t = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
355.6mm
Widthb
254mm
Thicknesst
6.35mm
Outside corner radiusro
12.7mm

Mass and area

Mass per lengthm
58.69kg/m
Cross-sectional areaA
7,477mm²
Outside perimeterP
1,197mm

Strong axis x–x

Moment of inertiaIx
137.810⁶ mm⁴
Elastic section modulusSx
775.110³ mm³
Plastic section modulusZx
918.310³ mm³
Radius of gyrationrx
135.8mm

Weak axis y–y

Moment of inertiaIy
82.4910⁶ mm⁴
Elastic section modulusSy
649.510³ mm³
Plastic section modulusZy
73110³ mm³
Radius of gyrationry
105mm

Torsion and stability

Torsional constantJ
161,18710³ mm⁴

Equivalents in other standards