IR – wide flange (ASTM A6 W)

IR 460x384

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 = 300d = 546tf = 58.4tf = 58.4tw = 32.5tw = 32.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
546mm
Flange widthbf
300mm
Web thicknesstw
32.5mm
Flange thicknesstf
58.4mm
Distance k (design)kdes
68.6mm
Distance k (detailing)kdet
81mm
Distance k1k1
36.5mm
Web clear depthT
384mm
Distance between flange centroidsho
488mm

Mass and area

Mass per lengthm
384kg/m
Cross-sectional areaA
49,000mm²

Strong axis x–x

Moment of inertiaIx
2,29010⁶ mm⁴
Elastic section modulusSx
8,42010³ mm³
Plastic section modulusZx
10,00010³ mm³
Radius of gyrationrx
217mm

Weak axis y–y

Moment of inertiaIy
26110⁶ mm⁴
Elastic section modulusSy
1,75010³ mm³
Plastic section modulusZy
2,72010³ mm³
Radius of gyrationry
73.2mm

Torsion and stability

Torsional constantJ
42,90010³ mm⁴
Warping constantCw
15,50010⁹ mm⁶
Effective radius of gyrationrts
86.9mm

Slenderness ratios

Flange slendernessbf/2tf
2.56
Web slendernessh/tw
12.5

Equivalents in other standards