IR – wide flange (ASTM A6 W)

IR 360x551

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 = 419d = 455tf = 67.6tf = 67.6tw = 42.2tw = 42.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
455mm
Flange widthbf
419mm
Web thicknesstw
42.2mm
Flange thicknesstf
67.6mm
Distance k (design)kdes
82.8mm
Distance k (detailing)kdet
100mm
Distance k1k1
52.4mm
Web clear depthT
254mm
Distance between flange centroidsho
386mm

Mass and area

Mass per lengthm
551kg/m
Cross-sectional areaA
70,300mm²

Strong axis x–x

Moment of inertiaIx
2,26010⁶ mm⁴
Elastic section modulusSx
9,95010³ mm³
Plastic section modulusZx
12,10010³ mm³
Radius of gyrationrx
180mm

Weak axis y–y

Moment of inertiaIy
82810⁶ mm⁴
Elastic section modulusSy
3,95010³ mm³
Plastic section modulusZy
6,06010³ mm³
Radius of gyrationry
108mm

Torsion and stability

Torsional constantJ
92,40010³ mm⁴
Warping constantCw
31,20010⁹ mm⁶
Effective radius of gyrationrts
127mm

Slenderness ratios

Flange slendernessbf/2tf
3.1
Web slendernessh/tw
6.89

Equivalents in other standards