Technical characteristics of reference test blocks
MET-MTR (Rockwell)
| Range of hardness values | Range of values for hardness test blocks of the second category, not more | Load, kgf | Size, mm |
|---|---|---|---|
| HRA: 83±3 | 0,6 HRA | 60 |
Rectangular 60 x 40 x 10 |
| HRB: 90±10 | 1,2 HRB | 100 | |
| HRC: 65±5 | 0,5 HRC | 150 | |
| HRC: 45±5 | 0,8 HRC | 150 | |
| HRC: 25±5 | 1,1 HRC | 150 |
MET-MTSR (Superficial Rockwell)
| Range of hardness values | Range of values for hardness test blocks of the second category, not more | Load, kgf | Size, mm |
|---|---|---|---|
| HRN: 92±2 | 0,6 HRN | 15 |
Rectangular 60 x 40 x 6 |
| HRN: 80±4 | 0,6 HRN | 30 | |
| HRN: 45±5 | 1,1 HRN | 30 | |
| HRT: 76±6 | 1,2 HRT | 30 | |
| HRT: 45±5 | 1,6 HRT | 30 | |
| HRN: 49±6 | 1,1 HRN | 45 |
MET-MTB (Brinell)
| Range of hardness values | Range of values for hardness test blocks of the second category, not more | Load, kgf | Size, mm |
|---|---|---|---|
|
HB: 400±50 HB: 200±50 HB: 100±25 |
3% | 3000; 750; 187,5; 1000; 250 |
Rectangular 100 õ 80 õ 16 120 õ 75 õ 16 |
| HB: 100±25 | 4% | 187,5; 62,5 |
Rectangular 60 x 40 x 10 |
MET-MTV (Vickers)
| Range of hardness values | Range of values for hardness test blocks of the second category, not more | Load, kgf | Size, mm |
|---|---|---|---|
|
HV: 800±50 HV: 450±75 HV: 200±25 |
2% | 100; 50; 30; 20 |
Rectangular 60 x 40 x 6 |
|
HV: 800±50 HV: 450±75 HV: 200±25 |
3% | 10; 5; 3; 2 |
Rectangular 60 x 40 x 10 |
MET-MTSh (Shore)
| Range of hardness values | Range of values for hardness test blocks of the second category, not more | Size, mm |
|---|---|---|
|
HSD: 95±7 HSD: 60±7 HSD: 30±7 |
1,2 HSD |
Round 65 x 15 |