Rectangular and square HSS

HSS 305x203x13

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 = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
304.8mm
Widthb
203.2mm
Thicknesst
12.7mm
Outside corner radiusro
25.4mm

Mass and area

Mass per lengthm
92.97kg/m
Cross-sectional areaA
11,843mm²
Outside perimeterP
972.4mm

Strong axis x–x

Moment of inertiaIx
14710⁶ mm⁴
Elastic section modulusSx
964.510³ mm³
Plastic section modulusZx
1,18710³ mm³
Radius of gyrationrx
111.4mm

Weak axis y–y

Moment of inertiaIy
78.1610⁶ mm⁴
Elastic section modulusSy
769.310³ mm³
Plastic section modulusZy
89710³ mm³
Radius of gyrationry
81.24mm

Torsion and stability

Torsional constantJ
167,43610³ mm⁴

Equivalents in other standards