# How do I convert Hb to HRB?

## How do I convert Hb to HRB?

HRC – diamond penetrator 120°, load 1470 N (150 kgf) duration 30 seconds….Formula B – Convert HRB into HB.

Rockwell B Hardness (HRB) Brinell Hardness (HB)
From 55 to 69 HB = 1.646 * HRB + 8.7
From 70 to 79 HB = 2.394 * HRB – 42.7
From 80 to 89 HB = 3.297 * HRB – 114
From 90 to 100 HB = 5.582 * HRB – 319

## What is the hardness scale for aluminum?

Aluminum: 2.5-3. Copper: 3. Brass: 3.

What is Brinell hardness of aluminum?

The “10” is the ball diameter in millimeters….Common values.

Material Hardness
Hardwood 2.6–7.0 HBS 10/100
Lead 5.0 HB (pure lead; alloyed lead typically can range from 5.0 HB to values in excess of 22.0 HB)
Pure Aluminium 15 HB
Copper 35 HB

What is the difference between HB and HRB?

Table B is the comparison between HRB, BH, HV and Rm, refer to iron-foundry.com….Formula B – Convert HRB into HB.

Rockwell B Hardness (HRB) Brinell Hardness (HB)
From 55 to 69 HB = 1.646 * HRB + 8.7
From 70 to 79 HB = 2.394 * HRB – 42.7
From 80 to 89 HB = 3.297 * HRB – 114
From 90 to 100 HB = 5.582 * HRB – 319

### Is HRC harder than HRB?

The higher the number, the harder the material, but only relative to other numbers within a given scale. For example, an extremely hard steel might have a hardness of 64 HRC, while a fairly soft steel might have a hardness of 70 HRB. Rockwell B is better for softer steel or relatively hard aluminum.

### What does HRA mean in hardness?

As of now, the Rockwell hardness A scale (HRA), which is used to test both ferrous and non-ferrous metals, has yet to be defined by the CCM-WGH.

What are the hardness conversion numbers for wrought aluminum?

Approximate Hardness Conversion Numbers for Wrought Aluminum Products. Brinell Hardness No. 10mm Standard Ball, 3000 Kgf (HBS) Vicker’s Hardness Number (HV) Rockwell Hardness Number B Scale, 100 Kgf (HRB) Rockwell Hardness Number E Scale, 100 Kgf (HRE) Rockwell Hardness Number H Scale, 60 Kgf (HRH)

How do you calculate HB from HRB to HB?

HB = 11.158 * HRC – 79.6. From 51 to 60. HB = 17.515 * HRC – 401. Formula B – Convert HRB into HB. Rockwell B Hardness (HRB) Brinell Hardness (HB) From 55 to 69. HB = 1.646 * HRB + 8.7. From 70 to 79.

## What does HRB stand for?

HRB = Rockwell Hardness, HB = Brinell hardness Hardness Conversion Calculator ASTM E140 Brinell Vickers Rockwell Knoop Scleroscope

## What is HRB and HB in ASTM E140 E140?

Result will be displayed. Hardness Conversion Calculator are for Austenitic Stainless Steel and formulas as per ASTM E140-12. HRB = Rockwell Hardness, HB = Brinell hardness Hardness Conversion Calculator ASTM E140 Brinell Vickers Rockwell Knoop Scleroscope