Compressor valve steel grades
Sandvik's program of hardened and tempered compressor valve steel includes two types of stainless steel and one carbon steel.
| Sandvik grade | Description |
|---|---|
| FreeflexTM | A hardened and tempered martensitic stainless compressor valve steel alloyed with copper with excellent dimensional tolerances and flatness. |
| Sandvik Hiflex™ | A new generation of high-fatigue resistance stainless chromium steel giving design freedom for valves in high-frequency and high-pressure compressors. |
| Sandvik 7C27Mo2 | A martensitic stainless chromium steel alloyed with molybdenum that has higher fatigue strength than Sandvik 20C. |
| Sandvik 20C* | A carbon steel with 1% carbon, offering high fatigue strength. |
| Sandvik grade | Tensile strength, MPa (ksi) | Thickness, mm (in.) |
|---|---|---|
| FreeflexTM | 2020 (293) | 0.076-0.6 (0.003-0.0236) |
| Sandvik Hiflex™ | 1900 (276) | 0.152-1.0 (0.006-0.026) |
| Sandvik 7C27Mo2 | 1800 (261) | 0.152-1.2 (0.006-0.047) |
| Sandvik 20C* | 1600-2100 (232-305) | 0.152-1.2 (0.006-0.047) |
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