Compressor valve steel grades

Our program of hardened and tempered compressor valve steel includes two types of stainless steel and one carbon steel.

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

* Contact us for more information