IR – wide flange (ASTM A6 W)

IR 460x213

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 = 284d = 495tf = 33.5tf = 33.5tw = 18.5tw = 18.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
495mm
Flange widthbf
284mm
Web thicknesstw
18.5mm
Flange thicknesstf
33.5mm
Distance k (design)kdes
43.7mm
Distance k (detailing)kdet
55.6mm
Distance k1k1
30.2mm
Web clear depthT
384mm
Distance between flange centroidsho
462mm

Mass and area

Mass per lengthm
213kg/m
Cross-sectional areaA
27,100mm²

Strong axis x–x

Moment of inertiaIx
1,14010⁶ mm⁴
Elastic section modulusSx
4,62010³ mm³
Plastic section modulusZx
5,28010³ mm³
Radius of gyrationrx
205mm

Weak axis y–y

Moment of inertiaIy
12910⁶ mm⁴
Elastic section modulusSy
90910³ mm³
Plastic section modulusZy
1,40010³ mm³
Radius of gyrationry
69.1mm

Torsion and stability

Torsional constantJ
7,99010³ mm⁴
Warping constantCw
6,90010⁹ mm⁶
Effective radius of gyrationrts
80.5mm

Slenderness ratios

Flange slendernessbf/2tf
4.25
Web slendernessh/tw
22

Equivalents in other standards