IR – wide flange (ASTM A6 W)

IR 920x787

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 = 437d = 1,010tf = 73.9tf = 73.9tw = 40.9tw = 40.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,010mm
Flange widthbf
437mm
Web thicknesstw
40.9mm
Flange thicknesstf
73.9mm
Distance k (design)kdes
98mm
Distance k (detailing)kdet
106mm
Distance k1k1
50.8mm
Web clear depthT
797mm
Distance between flange centroidsho
937mm

Mass and area

Mass per lengthm
787kg/m
Cross-sectional areaA
101,000mm²

Strong axis x–x

Moment of inertiaIx
16,50010⁶ mm⁴
Elastic section modulusSx
32,60010³ mm³
Plastic section modulusZx
38,20010³ mm³
Radius of gyrationrx
406mm

Weak axis y–y

Moment of inertiaIy
1,04010⁶ mm⁴
Elastic section modulusSy
4,74010³ mm³
Plastic section modulusZy
7,44010³ mm³
Radius of gyrationry
102mm

Torsion and stability

Torsional constantJ
136,00010³ mm⁴
Warping constantCw
227,00010⁹ mm⁶
Effective radius of gyrationrts
122mm

Slenderness ratios

Flange slendernessbf/2tf
2.96
Web slendernessh/tw
19.9

Equivalents in other standards