Rectangular and square HSS

HSS 559x254x13

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 = 558.8t = 12.7t = 12.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
558.8mm
Widthb
254mm
Thicknesst
12.7mm
Outside corner radiusro
25.4mm

Mass and area

Mass per lengthm
153.7kg/m
Cross-sectional areaA
19,585mm²
Outside perimeterP
1,582mm

Strong axis x–x

Moment of inertiaIx
770.510⁶ mm⁴
Elastic section modulusSx
2,75810³ mm³
Plastic section modulusZx
3,45310³ mm³
Radius of gyrationrx
198.3mm

Weak axis y–y

Moment of inertiaIy
225.610⁶ mm⁴
Elastic section modulusSy
1,77710³ mm³
Plastic section modulusZy
1,99310³ mm³
Radius of gyrationry
107.3mm

Torsion and stability

Torsional constantJ
570,37210³ mm⁴

Equivalents in other standards