IR – wide flange (ASTM A6 W)

IR 530x248

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 = 315d = 572tf = 34.5tf = 34.5tw = 19.1tw = 19.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
572mm
Flange widthbf
315mm
Web thicknesstw
19.1mm
Flange thicknesstf
34.5mm
Distance k (design)kdes
47.2mm
Distance k (detailing)kdet
66.7mm
Distance k1k1
39.7mm
Web clear depthT
438mm
Distance between flange centroidsho
536mm

Mass and area

Mass per lengthm
248kg/m
Cross-sectional areaA
31,500mm²

Strong axis x–x

Moment of inertiaIx
1,78010⁶ mm⁴
Elastic section modulusSx
6,23010³ mm³
Plastic section modulusZx
7,08010³ mm³
Radius of gyrationrx
238mm

Weak axis y–y

Moment of inertiaIy
18110⁶ mm⁴
Elastic section modulusSy
1,15010³ mm³
Plastic section modulusZy
1,77010³ mm³
Radius of gyrationry
75.9mm

Torsion and stability

Torsional constantJ
9,82010³ mm⁴
Warping constantCw
13,00010⁹ mm⁶
Effective radius of gyrationrts
88.4mm

Slenderness ratios

Flange slendernessbf/2tf
4.57
Web slendernessh/tw
25

Equivalents in other standards