Description
The typical electrode potential in sea water at room temperature is -0.2 V (SCE). Co20 shows excellent corro-sion resistance in Phosphoric Acid (concentration 60%, 66˚C) and in Sulphuric Acid (concentration 9-%, Room Tem-perature). In Nitric Acid (concentration 60%, boiling) a good corrosion resistance has been observed.
Chemical & Physical Properties
| Co | Cr | W | C | Ni | Mo | Others | Hardness | Density | Melting Range |
| Bal. | 32.5 | 17.5 | 2.5 | < 3.0 | < 1.0 | Fe, Si, Mn | 52 – 62 HRC | 8.77 g/cm3 | 1260 – 1300 ºC |
Deposit Characteristics
| Metal to metal Wear | Excellent |
| Cold / Hot Abrasion | Excellent / Excellent |
| Erosion / Corrosion | Excellent / Excellent |
| Impact | Unsatisfactory |
| Magnetic | No |
| Deposit Layers | 2 Max |
Applications
- Pump sleeves
- Rotary seal rings
- Wear pads
- Bearing sleeves
- Centerless grinder
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