Transcription of SKD11(냉간합금공구강) - pneucon.co.kr
1 Pneucon-TI-Material-Cold Tool Steel 1 skd11 ( ) 1) skd11 , , . 2 . , , . , , , , . skd11 C Cr( - 13% Cr) , 13 . , .. SKS3.
2 , Cr ( 1500HV) , , .. skd11 ( 1 m) . , 225HB , SK ( 1/2). Cr . 60 HRC .. , 150 200 C . , . 500 530 C . 2) CHEMICAL COMPOSITIONS Chemical Compositions(wt, %) C Si Mn P S Cr Mo Ni V < < < < Pneucon-TI-Material-Cold Tool Steel 2 3) HEAT TREATMENT Heat Treatment Conditions Heat Treatment( ) Hardness( ) Annealing/ Quenching/ Tempering/ Annealing/H B Quenching + TemperingHRC 800 - 870 C Slow Cooling 1,000 - 1,050 C Air Cooling Oil Cooling 550 - 680 C Air Cooling 218 58 Coefficient of Thermal Expansion ( 10-6/ C) (Average Thermal Expansion Coefficient)
3 100 C 200 C 300 C 400 C Heat Treatment Hardness Curve Continuous Cooling Transformation Curve Chemical Compositions (wt, %) C SiMnPSCr Mo
