Question:
State the composition of following materials (i) Fe E 230 (ii) X 20 Cr 18 Ni 2 (iii) 35 C 8 (iv) 40 Ni 2 Cr 1 Mo 28
Answer:
i) Fe E 230 : Steel with min.Yield strength of 230N/mm2 ii ) X20Cr 18 Ni 2:Specification: It is ALLOY STEEL having Carbon 0.20% ,Chromium 18% and Nickel 2% iii )35 C 8 : steel with 0.35% carbon & 0.8% Manganese.
iv) 40 Ni 2 Cr 1 Mo 20 :Alloy Steel having 0.4% carbon,0.5% Nickel, 0.25% chromium,2.8% Molybdenum.