IR – wide flange (ASTM A6 W)

IR 250x58

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 = 203d = 252tf = 13.5tf = 13.5tw = 8tw = 8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
252mm
Flange widthbf
203mm
Web thicknesstw
8mm
Flange thicknesstf
13.5mm
Distance k (design)kdes
26.2mm
Distance k (detailing)kdet
30.2mm
Distance k1k1
20.6mm
Web clear depthT
191mm
Distance between flange centroidsho
239mm

Mass and area

Mass per lengthm
58kg/m
Cross-sectional areaA
7,420mm²

Strong axis x–x

Moment of inertiaIx
8710⁶ mm⁴
Elastic section modulusSx
69010³ mm³
Plastic section modulusZx
76710³ mm³
Radius of gyrationrx
108mm

Weak axis y–y

Moment of inertiaIy
18.710⁶ mm⁴
Elastic section modulusSy
18510³ mm³
Plastic section modulusZy
28210³ mm³
Radius of gyrationry
50.3mm

Torsion and stability

Torsional constantJ
40610³ mm⁴
Warping constantCw
26610⁹ mm⁶
Effective radius of gyrationrts
56.9mm

Slenderness ratios

Flange slendernessbf/2tf
7.53
Web slendernessh/tw
25

Equivalents in other standards