IR – wide flange (ASTM A6 W)

IR 360x421

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 = 409d = 424tf = 52.6tf = 52.6tw = 32.8tw = 32.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
424mm
Flange widthbf
409mm
Web thicknesstw
32.8mm
Flange thicknesstf
52.6mm
Distance k (design)kdes
67.8mm
Distance k (detailing)kdet
85.7mm
Distance k1k1
47.6mm
Web clear depthT
254mm
Distance between flange centroidsho
371mm

Mass and area

Mass per lengthm
421kg/m
Cross-sectional areaA
53,700mm²

Strong axis x–x

Moment of inertiaIx
1,60010⁶ mm⁴
Elastic section modulusSx
7,52010³ mm³
Plastic section modulusZx
8,88010³ mm³
Radius of gyrationrx
172mm

Weak axis y–y

Moment of inertiaIy
59910⁶ mm⁴
Elastic section modulusSy
2,93010³ mm³
Plastic section modulusZy
4,49010³ mm³
Radius of gyrationry
106mm

Torsion and stability

Torsional constantJ
43,30010³ mm⁴
Warping constantCw
20,90010⁹ mm⁶
Effective radius of gyrationrts
122mm

Slenderness ratios

Flange slendernessbf/2tf
3.89
Web slendernessh/tw
8.84

Equivalents in other standards