The company must produce crankshaft with diameter D = 40mm. The yield strength must be not less than 450MPa. Suggest steel for crankshaft manufacturing. Give steel grade, indicate chemical...

The company must produce crankshaft with diameter D = 40mm. The yield strength must be not less than 450MPa. Suggest steel for crankshaft manufacturing. Give steel grade, indicate chemical composition, heat treatment technologies, indicate mechanical properties and structure after hardening and tempering.