440C STAINLESS TOOL STEEL


TEMPERING                                                      

Tempering 440C in the range of 180C / 230C is recommended to develop full working hardness in the range of Rockwell "C" 57 / 59.


TYPICAL HARDNESS AFTER TEMPERING
 

Temperature C Rockwell C Brinell
150 60 - 61 614
180 57 - 59 578
200 57 - 58 578
260 56 555
320 55 - 56 555
430 56 555
540 57 - 59 578
650 38 - 39 352

1040C Oil Quench - Temper One Hour at Temperature