IR – wide flange (ASTM A6 W)
IR 410x38.8
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 399mm
- Flange widthbf
- 140mm
- Web thicknesstw
- 6.35mm
- Flange thicknesstf
- 8.76mm
- Distance k (design)kdes
- 19mm
- Distance k (detailing)kdet
- 27mm
- Distance k1k1
- 19.1mm
- Web clear depthT
- 346mm
- Distance between flange centroidsho
- 391mm
Mass and area
- Mass per lengthm
- 38.8kg/m
- Cross-sectional areaA
- 4,950mm²
Strong axis x–x
- Moment of inertiaIx
- 12510⁶ mm⁴
- Elastic section modulusSx
- 62910³ mm³
- Plastic section modulusZx
- 72410³ mm³
- Radius of gyrationrx
- 159mm
Weak axis y–y
- Moment of inertiaIy
- 3.9910⁶ mm⁴
- Elastic section modulusSy
- 57.210³ mm³
- Plastic section modulusZy
- 89.810³ mm³
- Radius of gyrationry
- 28.4mm
Torsion and stability
- Torsional constantJ
- 10910³ mm⁴
- Warping constantCw
- 15210⁹ mm⁶
- Effective radius of gyrationrts
- 35.1mm
Slenderness ratios
- Flange slendernessbf/2tf
- 7.97
- Web slendernessh/tw
- 56.8