IS : 2062 - Specification of Steel for General Structural Purposes.It is the indian standard specification code for Mild Steel. CHEMICAL COMPOSITION Grade C% Max. Mn% Max. S% Max. P% Max. Si% Max. C.E.% Max. A 0.23 1.50 0.050 0.050 0.40 0.42 B 0.22 1.50 0.045 0.045 0.40 0.41 C 0.20 1.50 0.040 0.040 0.40 0.39 MECHANICAL PROPORTIES Grade UTS(MPa) Min. Y.S.(MPa) Min. El.% Min. 5.65 Sqrt(So) Bend Test A 410 250 240 230 23 3T B 410 250 240 230 23 2T & 3T * C 410 250 240 230 23 2T * 2T - <= 25mm * 3T - > 25mm Density = 7850 Kg / m3 By Pradeep Banta
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The main difference is in between grade A,B & C IS THE CARBON CONTAIN OF THE MATERIALS.
GR SA 106 Gr B is used for high temperature service and might not require impact test
The main difference is the thickness of the pipe Compare to A Class pipe B Class pipe thickness is more.Like that Compare to B class pipe C Class pipe thickness is more.
processing is the plural. B+c=P