Table 1.
Material data sample and counter sample.
| Material | Shape | Dimensions (mm) | Hardness | Density (g/cm3) | |
|---|---|---|---|---|---|
| Sample | acid resistant steel | countersunk pin | ϕ10 × 30 | 29–30 HRC | 7.8 |
| Counter Sample | expandedgraphite | ring | ϕ60 × 40 × 10 | 20 HV0,05 | 1.6 |
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