How do you convert HRC to Brinell?
HB – ball 10 mm, load 29,400N (3000 kgf) durata 15 seconds. BHN – Brinell Hardness Number, which is the same meaning as HB….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 shall be the approximate tensile strength of a rolled steel bar whose hardness has been measured to be 170 BHN?
Mechanical Properties
| Mechanical Properties | Metric | Imperial |
|---|---|---|
| Hardness, Rockwell B (Converted from Brinell hardness) | 84 | 84 |
| Hardness, Vickers (Converted from Brinell hardness) | 170 | 170 |
| Tensile Strength, Ultimate | 565 MPa | 81900 psi |
| Tensile Strength, Yield | 310 MPa | 45000 psi |
How do you find the Brinell hardness number?
hardness tester The Brinell hardness number is obtained by dividing the load, in kilograms, by the spherical area of the indentation in square millimetres; this area is a function of the ball diameter and the depth of the indentation.
How do you calculate Brinell hardness number?
The Brinell hardness test is commonly used to determine the hardness of materials like metals and alloys. It is desirable that the test load are limited to a impression diameter in the range of 2.5 to 4.75 mm….The Brinell hardness test of metals and alloys.
| Brinell Hardness Number | Load (kg) |
|---|---|
| 26 – 100 | 500 |
What is the hardness of Brinell hardness?
Hardness Conversion Table Brinell Hardness Rockwell Hardness Rockwell Hardness Rockwell Hardness Tensile Strength 363 70.0 – 39.1 182,000 352 69.3 110.0 37.9 176,000 341 68.7 109.0 36.6 170,000 331 68.1 108.5 35.5 166,000
What is the difference between Rockwell C HRB and HRB?
Rockwell C (HRC) – Used to measure the hardness of raw materials at medium to high hardness levels. Rockwell B (HRB)- Used to measure the hardness of raw materials at medium to low hardness levels. Vickers (HV) – Used to measure the hardness of cutting materials (Carbide, Ceramic, CBN). Gpa – Used to measure the hardness of PCD.
What is the difference between Brinell [HB] and Vickers [HV] hardness scale?
The advantage of Brinell [HB] over Rockwell [HRC/HRB], is that the whole range is covered on the scale, whereas in Rockwell C scale when the hardness is below 180 HB, you must switch to Rockwell B. Vickers [HV] is a common unit used for listing the hardness of carbide grades and other hard cutting materials such as Ceramics, CBN, and PCD.