IR – wide flange (ASTM A6 W)

IR 360x634

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 = 424d = 475tf = 77.2tf = 77.2tw = 47.8tw = 47.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
475mm
Flange widthbf
424mm
Web thicknesstw
47.8mm
Flange thicknesstf
77.2mm
Distance k (design)kdes
92.2mm
Distance k (detailing)kdet
110mm
Distance k1k1
54mm
Web clear depthT
254mm
Distance between flange centroidsho
399mm

Mass and area

Mass per lengthm
634kg/m
Cross-sectional areaA
80,600mm²

Strong axis x–x

Moment of inertiaIx
2,75010⁶ mm⁴
Elastic section modulusSx
11,60010³ mm³
Plastic section modulusZx
14,20010³ mm³
Radius of gyrationrx
184mm

Weak axis y–y

Moment of inertiaIy
98210⁶ mm⁴
Elastic section modulusSy
4,64010³ mm³
Plastic section modulusZy
7,11010³ mm³
Radius of gyrationry
110mm

Torsion and stability

Torsional constantJ
138,00010³ mm⁴
Warping constantCw
38,70010⁹ mm⁶
Effective radius of gyrationrts
130mm

Slenderness ratios

Flange slendernessbf/2tf
2.75
Web slendernessh/tw
6.08

Equivalents in other standards