YAMAMOTO Hardness Standard Blocks
- Advantages Calibrating with the World's Most Accurate Blocks
- The Most Consistent and Reliable commercially available in the world
- Twice the Usable Test Areas, Thicker and More Stable
- Based on ISO • JIS Standards
- HRC 67, 64, 62, 60, 55, 50, 45, 40, 35, 25 & 20 are compliance with ASTM E-18
Rockwell | Rockwell Superficial | Shore | Vickers | Micro Vickers | Brinell | Nanoindentation
Types and norminal Hardness Values
| HRC | 70 | 67 | 64 | 62 | 60 |
| HRC | 57 | 55 | 50 | 45 | 40 | 35 | 30 | 25 | 20 | 10 |
| HRA | 87 | 85 | 83 | 81 | 78 | 75 | 71 | 65 | 56 |
| HR30N | 83 | 81 | 78 | 73 | 67 | 60 | 55 | 50 | 41 |
| HR15N (45N) | 92 | 90 | 87 | 85 | 80 | 75(43)(23) |
| HRB S | 100 | 95 | 90 | 82 | 72 | 62 | 52 | 42 | 32 |
| HRB Dual (HRB S+W) | d-HRB 90 | 82 | 72 |62 | 32 |
| HR30T S | 78 | 72 | 62 | 52 | 42 | 38 | 32 |
| HR15T S | 87 |82 | 78 |
| HRE 90 | HRM 107, 67 | HRL 118, 92 | HRR 123, 105 | H RF 90 | HRS 90 | | |
| HMV (1 | 0.1) | 1650 |
| HMV (1 | 0.1 | 0.01) | 900 | 800 | 700 | 600 | 500 | 400 | 300 | 200 | 100 | 40 |
| HMV (0.1 | 0.01 | 0.001) | 30(Au) |
| HV (30 | 1) | 1000 | 900 | 800 | 700 |
|
HV (10 | 1) |
600 | 500 | 400 | 300 | 200 | 150 | 100 | 40 |
| HMV (0.01 | 0.002) | 900 | 700 | 500 | 200 (Berkovich 9.8mN tested) |
|
HN-W Single Crystal Block for nanoindentation (=430HV 0.01 | 0.001 | Berkovich 9.8mN tested) | |
|
| HS | 100 | 95 | 90 | 80 | 70 | 60 | 50 | 40 | 30 | 20 | 7 |
| HLE (Dia) | 850 | 800 | 700 | 600 | 500 |
| HLD (WC) | 880 | 830 | 730 | 630 | 520 |
| HBW (10/3000) | 600 | 550 | 500 | 450 | 400 | 350 |
| HBW (10/3000) | 300 | 250 | 229 (d=4mm) | 200 | 180 | 150 |
| HBW (10/500) | 125 | 100 |
| Combinations for Diamond Indentor verification | HRC 55, 25 | HR45N 43, 23 | HR15N 90 | |
| Combinations for daily control: HRC 60, 50, 30 | HS 90, 60, 30 | HBW 229 | |
