The angle of the cutting tip used to machine mild steel on a lathe is 55 to 80 degrees depending on the surface roughness, size of the cut and type of finish required.
for rc works
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mild steel.
mild steel
duev to its ductility
Zinc
Mild steel is harder than copper as it has a higher hardness level on the Mohs scale. Mild steel is commonly used in construction and manufacturing due to its durability and strength, while copper is known for its excellent electrical conductivity and malleability.
Because hard steel would be brittle and break.
During a tensile test of mild steel, the bar is tested until it breaks. It measures how much stress the mild steel can take before it finally breaks under the pressure.
both of these are same In some places they are used interchangeabl low carbon steel has 0.05-0.15% carbon mild carbon steel has0.16-0.29% carbon http://www.metalsupplies.com/
1)mild steel 2)ripped torsion steel 3)nical alloy steel 4)deformed steel
because it rusts.