IR – wide flange (ASTM A6 W)

IR 690x323

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 = 358d = 721tf = 38.1tf = 38.1tw = 21.1tw = 21.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
721mm
Flange widthbf
358mm
Web thicknesstw
21.1mm
Flange thicknesstf
38.1mm
Distance k (design)kdes
58.2mm
Distance k (detailing)kdet
68.3mm
Distance k1k1
41.3mm
Web clear depthT
584mm
Distance between flange centroidsho
683mm

Mass and area

Mass per lengthm
323kg/m
Cross-sectional areaA
41,200mm²

Strong axis x–x

Moment of inertiaIx
3,71010⁶ mm⁴
Elastic section modulusSx
10,30010³ mm³
Plastic section modulusZx
11,70010³ mm³
Radius of gyrationrx
300mm

Weak axis y–y

Moment of inertiaIy
29310⁶ mm⁴
Elastic section modulusSy
1,64010³ mm³
Plastic section modulusZy
2,52010³ mm³
Radius of gyrationry
84.3mm

Torsion and stability

Torsional constantJ
15,70010³ mm⁴
Warping constantCw
34,40010⁹ mm⁶
Effective radius of gyrationrts
98.8mm

Slenderness ratios

Flange slendernessbf/2tf
4.71
Web slendernessh/tw
28.7

Equivalents in other standards