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Table 3 Chemical composition of AISI 4340 steel (wt%)

From: Experimental investigation of surface roughness, flank wear, chip morphology and cost estimation during machining of hardened AISI 4340 steel with coated carbide insert

C Si Mn P S Cr Mo Ni Fe
0.384 0.231 0.613 0.025 0.028 1.007 0.230 1.418 Balance