It can range from 10 HRc to 50 HRc it's all dependent on how it's heat treated and quenched.
it is 90
59RC
28 - 32 hrc
SS316 rockwell B is 95 maxSA-105 rockwell B is 91 max
EN31 is steel that has a hardness measurement of 63HRC. The Brinell-Rockwell hardness of the material ranges from 59 to 65.
Rockwell hardness
59
ANSWER: Rockwell (HRC) 50.Grade 420 stainless steel (Fe,
it is 90
59RC
28 - 32 hrc
chrome vanadium steel is designated C41-55.
63-65
SS316 rockwell B is 95 maxSA-105 rockwell B is 91 max
EN31 is steel that has a hardness measurement of 63HRC. The Brinell-Rockwell hardness of the material ranges from 59 to 65.
Hardness of metal is determined by the carbon content. HRC is the Rockwell Hardness Scale. A hardness of 55-58 is not very hard compared to carbon steel.
Rockwell Hardness of steel 1018 ranges from 71 to 78 converted from Brinell hardness. The difference from 71 to 78 is caused by manufacturing metods and/or purity of the alloy. The corresponding test for 1018 is RHB wich must be done using 1/16 a ball penetrator.