What is a good hardness for a knife?
WHAT IS A GOOD ROCKWELL SCALE RATING FOR KITCHEN KNIVES? The best quality chef knives have a Rockwell Hardness Rating or HRC rating of 60 and above. This means the steel is hard, retains its edge for a long time, but may also be slightly more brittle than other knives.
How hard is Rockwell C61?
attainable Rockwell hardness is C59-C61. Melting point is 2640° F. Yield strength is 105,000 psi.
Is RC the same as HRC?
The important scale for knife steel is Hardness Rockwell Scale C, often shown as HRC, which is further abbreviated to just Rc.
Is higher HRC better?
The HRC — which also goes by other abbreviations like RC — lets you know the hardness of the steel. A low HRC number means the steel is softer and a higher number means it’s harder. It’s easy to assume that a higher number is better because it’s stronger, but that’s not always the case.
What does 60hrc mean?
A lower Rockwell number means that the steel is softer, relatively speaking, while a higher number indicates a harder steel. Sometimes you’ll see Rockwell hardness expressed as a single value, like “59 RC,” and other times as a range, like “58-60 HRC.”
What is the meaning of HRC in hardness?
The Rockwell C scale is usually abbreviated HRC (Hardness Rockwell C), while the Rockwell B scale is abbreviated HRB (Hardness Rockwell B). The higher the number, the harder the material, but only relative to other numbers within a given scale. Rockwell B is better for softer steel or relatively hard aluminum.
Is 52 Rockwell hard?
In the case of the Rockwell hardness scale, what’s really being measured is the steel’s resistance to permanent distortion. An HRC rating of 52-54 is soft but would make a reasonable, inexpensive kitchen knife. Professionals and experienced home cooks look for kitchen knives with an HRC rating of 55 and above.
What is RC 58 hardness?
Hardened knife steels are generally about 58/62 HRC (hardness Rockwell C), depending on the grade. Most are typically about 58/60 HRC, although some are occasionally used up to about 62 HRC. Knife edges which plastically deform in service possess insufficient hardness.