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High-performance compressor valve steel

Alleima offers high-quality compressor valve steel designed to meet the most demanding industrial applications. Our products are known for their durability, corrosion resistance, and optimal performance in dynamic environments.

Compressor valve steel applications

Find more information about our steel grades in our technical datasheets.

Freeflex® Versa

Alleima's latest product based on the Freeflex composition. Freeflex Versa has further elevated mechanical properties and a refined microstructure, to offer superior fatigue and wear resistance especially for refrigeration and freezer reciprocating compressor applications.

Freeflex® Versa

Freeflex® Core

A martensitic stainless chromium steel, with a new chemical composition alloyed with Cu. Freeflex Core has been designed with enhanced fatigue- and wear resistance compared to Alleima Hiflex. Freeflex Core is especially suitable for AC and heat pump, rotary- and scroll compressors operating at elevated temperatures.

Freeflex® Core

Hiflex™

Based on the same chemical composition as Alleima 7C27Mo2 our Alleima Hiflex has modified mechanical properties and microstructure that offer superior fatigue and wear resistance. It allows valves to operate in tougher conditions compared to Alleima 7C27Mo2.

Hiflex™

Alleima® 7C27Mo2

A martensitic stainless chromium steel alloyed with molybdenum with enhanced properties compared with Alleima 20C for compressor in practically all applications.

Alleima® 7C27Mo2

Alleima® 20C

A martensitic carbon steel (1% C) tailored with excellent properties for basic compressor applications in which valves are operating at moderate conditions.

Alleima® 20C

Introducing Freeflex® — The future of compressor valve steel

Freeflex® is one of our premium product lines for compressor valve steel. With advanced technology and an optimized alloy composition, it delivers exceptional performance, energy efficiency, and longer service life in demanding environments.

Discover our premium product lines for compressor valve steel
a metal plate with holes

Optimized performance starts with the right steel

Advanced compressor valve steel enables higher efficiency, increased valve lift and more compact, high-performance compressor designs. Explore key material properties, fatigue strength and application insights tailored for demanding environments.

Download the compressor valve steel brochure

Why choose Alleima for compressor valve steel?

  • High wear resistance – Long lifespan even under extreme conditions.
  • Corrosion resistance – Optimized for aggressive environments and high temperatures.
  • Designed for optimal performance – Ensures efficient operation and reduced energy consumption.

Compressor Valve steel applications

  • Air conditioning equipment
  • Refrigeration systems
  • Heat pumps
  • Commercial refrigerators & freezers
  • Industrial compressors
  • Air compressors
  • Vacuum pumps
  • Brake systems
  • Automotive applications
  • Power generation equipment

The Butterfly Effect — Big impact from small change

Just like a butterfly’s wing can influence the weather, a small component can make a huge difference.

Compressor valves made from our steel help refrigerators and air conditioners run more efficiently, reducing energy use and CO₂ emissions.

If all households in China used white goods with our compressor valves, emissions could drop by 225 million tonnes annually.

A significant outcome from a very small change.

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Whitepapers

Our strip white papers provide in-depth insights into material selection, sustainability, and performance. Explore new perspectives, deepen your understanding, and make decisions that strengthen both your product quality and your competitive edge.

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The design potential of compressors through next-generation valve material

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A cut above: Sourcing optimal strip steel to achieve next-level precision

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Steel selection guide: Choosing the right material for knives, cutting tools, and more

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