In some cases, the circumstances require special materials with exceptional characteristics. In such cases, Roveron will gladly discuss the best material for the particular spring with the customer.
The tables below list a number of materials that are often used.
| Description | Wst no. | Characteristic | Application |
|---|---|---|---|
| Nimonic 90 | 2.4632 | Proven material for high temperature applications | Various high temperature applications (higher than Inconel) |
| Monel | 2.4360 | Excellent corrosion resistance in alkaline and acid environments | Valves, pumps, chemistry, maritime |
| Phynox | 2.4711 | Excellent pitting characteristics, corrosion resistance and non-magnetic | (Petro)chemistry, medical, maritime |
| Material | Type | Coiling | Operating Temperature | Heat treatment after coiling |
|---|---|---|---|---|
| Monel 400 | Spring hardness | Cold | Up to 230° | 300°C - 320°C for ½ - 1 hour + Air cooling (A.C.) |
| K-Monel 500 | Spring hardness | Cold | Up to 260°C | 540°C for 4 – 10 hours + Air cooling (A.C.) |
| Nimonic 90 | Spring hardness | Cold | Up to 350°C | 650°C4 for 4 hours + Air cooling (A.C.) |
| Nimonic 90 | Solution annealed | Cold | 350°C-590°C | 750°C for 4 hours + Air cooling (A.C.) |
