IR – wide flange (ASTM A6 W)

IR 760x257

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 = 381d = 772tf = 27.2tf = 27.2tw = 16.6tw = 16.6
Cross-section, to scaledimensions in mm

Dimensions

Depthd
772mm
Flange widthbf
381mm
Web thicknesstw
16.6mm
Flange thicknesstf
27.2mm
Distance k (design)kdes
47mm
Distance k (detailing)kdet
58.7mm
Distance k1k1
39.7mm
Web clear depthT
654mm
Distance between flange centroidsho
744mm

Mass and area

Mass per lengthm
257kg/m
Cross-sectional areaA
32,800mm²

Strong axis x–x

Moment of inertiaIx
3,43010⁶ mm⁴
Elastic section modulusSx
8,87010³ mm³
Plastic section modulusZx
9,95010³ mm³
Radius of gyrationrx
323mm

Weak axis y–y

Moment of inertiaIy
24910⁶ mm⁴
Elastic section modulusSy
1,31010³ mm³
Plastic section modulusZy
2,02010³ mm³
Radius of gyrationry
86.9mm

Torsion and stability

Torsional constantJ
6,49010³ mm⁴
Warping constantCw
34,60010⁹ mm⁶
Effective radius of gyrationrts
102mm

Slenderness ratios

Flange slendernessbf/2tf
7.04
Web slendernessh/tw
40.8

Equivalents in other standards