IR – wide flange (ASTM A6 W)

IR 460x421

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 = 302d = 556tf = 63.5tf = 63.5tw = 35.6tw = 35.6
Cross-section, to scaledimensions in mm

Dimensions

Depthd
556mm
Flange widthbf
302mm
Web thicknesstw
35.6mm
Flange thicknesstf
63.5mm
Distance k (design)kdes
76.2mm
Distance k (detailing)kdet
85.7mm
Distance k1k1
38.1mm
Web clear depthT
384mm
Distance between flange centroidsho
493mm

Mass and area

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

Strong axis x–x

Moment of inertiaIx
2,57010⁶ mm⁴
Elastic section modulusSx
9,26010³ mm³
Plastic section modulusZx
11,10010³ mm³
Radius of gyrationrx
219mm

Weak axis y–y

Moment of inertiaIy
29310⁶ mm⁴
Elastic section modulusSy
1,93010³ mm³
Plastic section modulusZy
3,03010³ mm³
Radius of gyrationry
73.9mm

Torsion and stability

Torsional constantJ
55,80010³ mm⁴
Warping constantCw
17,70010⁹ mm⁶
Effective radius of gyrationrts
88.1mm

Slenderness ratios

Flange slendernessbf/2tf
2.38
Web slendernessh/tw
11.3

Equivalents in other standards