IR – wide flange (ASTM A6 W)

IR 610x262

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 = 328d = 640tf = 34tf = 34tw = 19.1tw = 19.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
640mm
Flange widthbf
328mm
Web thicknesstw
19.1mm
Flange thicknesstf
34mm
Distance k (design)kdes
46.7mm
Distance k (detailing)kdet
66.7mm
Distance k1k1
39.7mm
Web clear depthT
508mm
Distance between flange centroidsho
607mm

Mass and area

Mass per lengthm
262kg/m
Cross-sectional areaA
33,400mm²

Strong axis x–x

Moment of inertiaIx
2,36010⁶ mm⁴
Elastic section modulusSx
7,37010³ mm³
Plastic section modulusZx
8,37010³ mm³
Radius of gyrationrx
267mm

Weak axis y–y

Moment of inertiaIy
19910⁶ mm⁴
Elastic section modulusSy
1,22010³ mm³
Plastic section modulusZy
1,88010³ mm³
Radius of gyrationry
77.2mm

Torsion and stability

Torsional constantJ
9,95010³ mm⁴
Warping constantCw
18,40010⁹ mm⁶
Effective radius of gyrationrts
90.7mm

Slenderness ratios

Flange slendernessbf/2tf
4.81
Web slendernessh/tw
28.7

Equivalents in other standards