IR – wide flange (ASTM A6 W)

IR 610x285

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 = 330d = 648tf = 37.1tf = 37.1tw = 20.6tw = 20.6
Cross-section, to scaledimensions in mm

Dimensions

Depthd
648mm
Flange widthbf
330mm
Web thicknesstw
20.6mm
Flange thicknesstf
37.1mm
Distance k (design)kdes
49.8mm
Distance k (detailing)kdet
69.9mm
Distance k1k1
41.3mm
Web clear depthT
508mm
Distance between flange centroidsho
610mm

Mass and area

Mass per lengthm
285kg/m
Cross-sectional areaA
36,500mm²

Strong axis x–x

Moment of inertiaIx
2,61010⁶ mm⁴
Elastic section modulusSx
8,05010³ mm³
Plastic section modulusZx
9,16010³ mm³
Radius of gyrationrx
267mm

Weak axis y–y

Moment of inertiaIy
22110⁶ mm⁴
Elastic section modulusSy
1,34010³ mm³
Plastic section modulusZy
2,06010³ mm³
Radius of gyrationry
78mm

Torsion and stability

Torsional constantJ
12,80010³ mm⁴
Warping constantCw
20,50010⁹ mm⁶
Effective radius of gyrationrts
91.4mm

Slenderness ratios

Flange slendernessbf/2tf
4.43
Web slendernessh/tw
26.6

Equivalents in other standards