Rectangular and square HSS

HSS 305x203x6.4

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 = 203.2d = 304.8t = 6.35t = 6.35
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
203.2mm
Thicknesst
6.35mm
Outside corner radiusro
12.7mm

Mass and area

Mass per lengthm
48.56kg/m
Cross-sectional areaA
6,186mm²
Outside perimeterP
994.2mm

Strong axis x–x

Moment of inertiaIx
81.4810⁶ mm⁴
Elastic section modulusSx
534.610³ mm³
Plastic section modulusZx
640.310³ mm³
Radius of gyrationrx
114.8mm

Weak axis y–y

Moment of inertiaIy
43.7810⁶ mm⁴
Elastic section modulusSy
430.910³ mm³
Plastic section modulusZy
485.810³ mm³
Radius of gyrationry
84.13mm

Torsion and stability

Torsional constantJ
89,83210³ mm⁴

Equivalents in other standards