IR – wide flange (ASTM A6 W)

IR 610x241

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 = 635tf = 31tf = 31tw = 17.9tw = 17.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
635mm
Flange widthbf
330mm
Web thicknesstw
17.9mm
Flange thicknesstf
31mm
Distance k (design)kdes
43.7mm
Distance k (detailing)kdet
63.5mm
Distance k1k1
39.7mm
Web clear depthT
508mm
Distance between flange centroidsho
605mm

Mass and area

Mass per lengthm
241kg/m
Cross-sectional areaA
30,800mm²

Strong axis x–x

Moment of inertiaIx
2,15010⁶ mm⁴
Elastic section modulusSx
6,78010³ mm³
Plastic section modulusZx
7,67010³ mm³
Radius of gyrationrx
264mm

Weak axis y–y

Moment of inertiaIy
18410⁶ mm⁴
Elastic section modulusSy
1,12010³ mm³
Plastic section modulusZy
1,72010³ mm³
Radius of gyrationry
77.5mm

Torsion and stability

Torsional constantJ
7,70010³ mm⁴
Warping constantCw
16,80010⁹ mm⁶
Effective radius of gyrationrts
90.7mm

Slenderness ratios

Flange slendernessbf/2tf
5.31
Web slendernessh/tw
30.6

Equivalents in other standards