IR – wide flange (ASTM A6 W)

IR 410x60

Standard: ASTM A6 / IMCASource: SI values from the AISC v16.0 database
IR designation built from the metric W; cross-check with the IMCA Manual.
xybf = 178d = 406tf = 12.8tf = 12.8tw = 7.75tw = 7.75
Cross-section, to scaledimensions in mm

Dimensions

Depthd
406mm
Flange widthbf
178mm
Web thicknesstw
7.75mm
Flange thicknesstf
12.8mm
Distance k (design)kdes
23mm
Distance k (detailing)kdet
30.2mm
Distance k1k1
20.6mm
Web clear depthT
346mm
Distance between flange centroidsho
394mm

Mass and area

Mass per lengthm
60kg/m
Cross-sectional areaA
7,610mm²

Strong axis x–x

Moment of inertiaIx
21610⁶ mm⁴
Elastic section modulusSx
1,06010³ mm³
Plastic section modulusZx
1,20010³ mm³
Radius of gyrationrx
168mm

Weak axis y–y

Moment of inertiaIy
1210⁶ mm⁴
Elastic section modulusSy
13510³ mm³
Plastic section modulusZy
20810³ mm³
Radius of gyrationry
39.9mm

Torsion and stability

Torsional constantJ
33010³ mm⁴
Warping constantCw
46510⁹ mm⁶
Effective radius of gyrationrts
47.2mm

Slenderness ratios

Flange slendernessbf/2tf
6.93
Web slendernessh/tw
46.5

Equivalents in other standards