COMPOSITION OF HIGH STRENGTH HEAVY CARBON NON-QUENCHED AND TEMPERED STEEL FOR A CRANKSHAFT

摘要

PURPOSE: Provided is a composition of high strength heavy carbon non-quenched and tempered steel for a crankshaft, which improves in processability effect, extends the life of the crankshaft by controlling manganese and sulfur content in components of a conventional non-quenched and tempered steel composition. CONSTITUTION: The non-quenched and tempered steel composition composed of carbon, silicon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, aluminum, vanadium and iron as main component is characterized by containing 0.10-1.30wt% of manganese and 0.02-0.07wt% of sulfur.