# Can you convert HRB to HRC?

Table of Contents

## Can you convert HRB to HRC?

HRB – ball 1/16”, load 980 N (100 kgf) duration 30 seconds….Formula A – Convert HRC into HB.

Rockwell C Hardness (HRC) | Brinell Hardness (HB) |
---|---|

From 21 to 30 | HB = 5.970 * HRC + 104.7 |

From 31 to 40 | HB = 8.570 * HRC + 27.6 |

From 41 to 50 | HB = 11.158 * HRC – 79.6 |

From 51 to 60 | HB = 17.515 * HRC – 401 |

## How do you calculate Rockwell hardness?

To calculate Rockwell hardness C number:

- Multiply scale factor, 500 , by depth of penetration, d .
- Subtract the product from the scale factor 100 to obtain the Rockwell hardness (HRC) number. Mathematically, that’s: HRB = 100 – 500 × d .

**How do you calculate Vickers hardness?**

The Vickers number (HV) is calculated using the following formula: HV = 1.854(F/D2), with F being the applied load (measured in kilograms-force) and D2 the area of the indentation (measured in square millimetres). The applied load is usually specified when HV is cited.

### How hard is 58 HRC?

56-58 HRC: Easy to sharpen and used in a professional kitchen. Mostly german knives or better quality Chinese vegetable/bone cleavers use this kind of hardness. 58-60 HRC: Better quality kitchen knives like Japanese knives.

### How do you calculate HRC?

Rockwell Hardness (HRC and HRB) and Brinell Hardness (HB or BHN) are most commonly used for steel and iron castings….Formula A – Convert HRC into HB.

Rockwell C Hardness (HRC) | Brinell Hardness (HB) |
---|---|

From 31 to 40 | HB = 8.570 * HRC + 27.6 |

From 41 to 50 | HB = 11.158 * HRC – 79.6 |

From 51 to 60 | HB = 17.515 * HRC – 401 |

**What does HV mean in hardness?**

The Vickers Hardness (HV) is calculated by optically measuring the diagonal lengths of the impression left by the indenter. The measurements are converted to HV using a table or formula. Load range: From 10 gf up to 100 kgf.

#### How is hardness calculated HRC?

Hardness units Rockwell [HRC/HRB/HRA] is one of the most common units used for listing the hardness of machined materials. the test is done by measuring the depth of penetration of a sphere under a large load compared to the penetration made by a reference preload.

#### How do you calculate HV hardness?

HV = 1.854(F/D2), with F being the applied load (measured in kilograms-force) and D2 the area of the indentation (measured in square millimetres). The applied load is usually specified when HV is cited. The Vickers test is reliable for measuring the hardness of metals, and it is also used on ceramic materials.

**What is HV in Vickers hardness test?**

The Vickers test can be used for all metals and has one of the widest scales among hardness tests. The unit of hardness given by the test is known as the Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH).