IR – wide flange (ASTM A6 W)

IR 460x260

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 = 290d = 508tf = 40.4tf = 40.4tw = 22.6tw = 22.6
Cross-section, to scaledimensions in mm

Dimensions

Depthd
508mm
Flange widthbf
290mm
Web thicknesstw
22.6mm
Flange thicknesstf
40.4mm
Distance k (design)kdes
50.5mm
Distance k (detailing)kdet
61.9mm
Distance k1k1
31.8mm
Web clear depthT
384mm
Distance between flange centroidsho
467mm

Mass and area

Mass per lengthm
260kg/m
Cross-sectional areaA
33,200mm²

Strong axis x–x

Moment of inertiaIx
1,44010⁶ mm⁴
Elastic section modulusSx
5,64010³ mm³
Plastic section modulusZx
6,52010³ mm³
Radius of gyrationrx
208mm

Weak axis y–y

Moment of inertiaIy
16310⁶ mm⁴
Elastic section modulusSy
1,13010³ mm³
Plastic section modulusZy
1,74010³ mm³
Radius of gyrationry
70.1mm

Torsion and stability

Torsional constantJ
14,10010³ mm⁴
Warping constantCw
8,94010⁹ mm⁶
Effective radius of gyrationrts
82.3mm

Slenderness ratios

Flange slendernessbf/2tf
3.58
Web slendernessh/tw
18

Equivalents in other standards