STEEL PROPERTIES AND JOINTS

 blog- 7

      

                 STEEL PROPERTIES AND  JOINTS

GALVANIC ACTION,

when two metals are in contact, the one that is high in the galvanic series will become the anode and will corrode. The current flows from the positive high end of the table to the negative low end of the table

CO-EFFICIENT OF THERMAL EXPANSION The changes in temperature causes expansion and Contraction, these changes are quantified by co- efficient Specific gravity Density of the substance Density of water Tensile yield  the graphical representation of steel under pressure from . Deformation zone to failure or breakage of steel.  


                                              Reflectivity- p(y) =Gr (y) / Gi (y) 

   when a light beam encounters a material, radiation can be absorbed or reflected by the surface.

Oil canning – Visible waviness in the flat areas of metal roofing and metal Wall panels.

Prevention design – choice of material,Thicker/ high quality material, Light colored/ low gloss finish, Use of backer rod, Skilled workers.

BOLTED-Using nut and bolts with cover plates


RIVET- The permanent joining of parts. Mainly used for fastening sheet and shaped rolled metal. Used in double cover plate joints.




                                                                                                                                            -suman

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