Load (N) | 70 | |
Stylus hardness (HRC) | 55 ± 1 | |
Test scratch length (mm) | 10 | |
Sample material | Rock (freshly broken surface) | |
CERCHAR | WEST | |
Test duration (s) | 1 | 10 |
Test result | CERCHAR abrasivity index (CAI) |
Impact energy (J) | 300 |
Wear tool hardness (HRC) | 40–42 |
Test scratch length (mm) | 78 |
Sample material | Rock (smooth surface) |
Test result | Gouging abrasion index (Gi) |
Rotational speed (min−1) | 4,500 |
Sample material | Soil/granular material |
Grain size of the sample (mm) | 4–6.3 |
Sample mass (g) | 500 ± 2 |
Test duration (min) | 5 |
Test result | LCPC abrasivity coefficient (LAC) |
LCPC breakability coefficient (LBC) |
0–50 | 0–0.3 | Not abrasive |
50–100 | 0.3–0.5 | Not very abrasive |
100–250 | 0.5–1.0 | Slightly abrasive |
250–500 | 1.0–2.0 | (Medium) abrasive |
500–1,250 | 2.0–4.0 | Very abrasive |
1,250–2,000 | 4.0–6.0 | Extremely abrasive |
Thrust (N) | 1,250 |
Rolling velocity (min−1) | 40 |
Test duration (min) | 30 |
Disc hardness (HRC) | 50 ± 1 |
Sample material | Rock (smooth surface) |
Test result | RIAT abrasivity index (RIATa) |
RIAT indentation index (RIATi) |
0.1–0.4 | Extremely low |
0.5–0.9 | Very low |
1.0–1.9 | Low |
2.0–2.9 | Medium |
3.0–3.9 | High |
4.0–4.9 | Very high |
≥5 | Extremely high |
Extremely high | ≥58.0 | ≥44.0 | |
Very high | 42.0–57.9 | 36.0–44.0 | |
High | 28.0–41.9 | 26.0–35.9 | ≥22.0 |
Medium | 11.0–27.9 | 13.0–25.9 | 7.0–22.0 |
Low | 4.0–10.9 | 4.0–12.9 | ≤7.0 |
Very low | 1.1–3.9 | 1.1–3.9 | |
Extremely low | ≤1.0 | ≤1.0 |
Load (N) | 100 | ||
Rotational speed (min−1) | 20 | ||
Material mass flow (g/min) | 80 | ||
AV | AVS | SATTM | |
Test duration (min) | 5 | 1 | 1 |
Sample material | Crushed rock powder | Crushed rock powder | soil |
Grain size of the sample (mm) | <1 | <1 | <4 |
Test specimen material | Tungsten carbide | Cutter ring steel | Cutter ring steel |
Test result | AV value | AVS value | SATTM value |