IR – wide flange (ASTM A6 W)

IR 530x272

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 = 318d = 577tf = 37.6tf = 37.6tw = 21.1tw = 21.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
577mm
Flange widthbf
318mm
Web thicknesstw
21.1mm
Flange thicknesstf
37.6mm
Distance k (design)kdes
50.3mm
Distance k (detailing)kdet
69.9mm
Distance k1k1
41.3mm
Web clear depthT
438mm
Distance between flange centroidsho
538mm

Mass and area

Mass per lengthm
272kg/m
Cross-sectional areaA
34,600mm²

Strong axis x–x

Moment of inertiaIx
1,97010⁶ mm⁴
Elastic section modulusSx
6,83010³ mm³
Plastic section modulusZx
7,80010³ mm³
Radius of gyrationrx
239mm

Weak axis y–y

Moment of inertiaIy
20110⁶ mm⁴
Elastic section modulusSy
1,27010³ mm³
Plastic section modulusZy
1,95010³ mm³
Radius of gyrationry
76.2mm

Torsion and stability

Torsional constantJ
12,80010³ mm⁴
Warping constantCw
14,60010⁹ mm⁶
Effective radius of gyrationrts
89.2mm

Slenderness ratios

Flange slendernessbf/2tf
4.22
Web slendernessh/tw
22.6

Equivalents in other standards