IR – wide flange (ASTM A6 W)

IR 310x500

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 = 340d = 427tf = 75.2tf = 75.2tw = 45.2tw = 45.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
427mm
Flange widthbf
340mm
Web thicknesstw
45.2mm
Flange thicknesstf
75.2mm
Distance k (design)kdes
90.2mm
Distance k (detailing)kdet
98.4mm
Distance k1k1
42.9mm
Web clear depthT
232mm
Distance between flange centroidsho
351mm

Mass and area

Mass per lengthm
500kg/m
Cross-sectional areaA
63,800mm²

Strong axis x–x

Moment of inertiaIx
1,69010⁶ mm⁴
Elastic section modulusSx
7,91010³ mm³
Plastic section modulusZx
9,88010³ mm³
Radius of gyrationrx
163mm

Weak axis y–y

Moment of inertiaIy
49510⁶ mm⁴
Elastic section modulusSy
2,90010³ mm³
Plastic section modulusZy
4,49010³ mm³
Radius of gyrationry
88.1mm

Torsion and stability

Torsional constantJ
101,00010³ mm⁴
Warping constantCw
15,30010⁹ mm⁶
Effective radius of gyrationrts
105mm

Slenderness ratios

Flange slendernessbf/2tf
2.26
Web slendernessh/tw
5.47

Equivalents in other standards