Alloy 20 is a High Alloyed Fasteners. Its corrosion properties surpass those of usual stainless qualities. For example, alloy 20 has excellent stress corrosion to boiling 20-40% sulfuric acid. Although alloy 20 was originally developed for usage in sulfuric environment, its range application has been steadily extended and today also includes machining of artificial rubber, plastic, synthetic fiber etc. In pharmaceutical and food producing application, where purity has to be guaranteed, Alloy 20 is employed to prevent metallic contamination. The most important advantages of this grade are its excellent mechanical properties as well as its comparatively easy machine ability.