The section properties for a 25 mm Square Hollow Section are as follows.

Property Value

Mass  
Area  
IX   
IY   
Zx   
Zn   
Sx   
Rx   
J   
C   
t   

  1.12 kg/m
  139 sq.mm
  0.0125 x 10^6 mm^4
  0.0125 x 10^6 mm^4
  0.997 x 10^3 mm^3
  0.78 x 10^3 mm^3
  1.20 x 10^3 mm^3
  9.46 mm
  0.0206 x 10^6 mm^4
  1.51 x 10^3 mm^3
  1.55 mm


The material properties assumed for C350 grade mild steel are as follows.

Property Value


Young's Modulus of Elasticity  
Shear Modulus of Elasticity  
Density  
Poisson's Ratio  
Design Yield Strength  
Minimum Yield Strength  
Minimum Tensile Strength  
Minimum Elongation   
Coefficient of Thermal Expansion  

  200 x 10^3 MPa
  80 x 10^3 MPa
  7850 kg/cu.m
  0.25
  320 Mpa
  350 Mpa
  430 MPa
  16%
  11.7 x 10^-6 per deg C



More Steel Data can be found here.



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