SAE AMS2280-1975 PDF

Scope: PurposeThis specification establishes maximum permissible limits for trace elements in nickel alloy castings.ApplicationThese products have been used typically for limited use to achieve premium-quality material for highly-stressed rotating parts@ such as turbine blades@ where control of trace elements is required to maintain elevated-temperature tensile@ stress-rupture@ creep@ and low-cycle fatigue properties@ but usage is not limited to such applications.It is intended that this specification be invoked only for selected applications by stipulation on drawings@ purchase orders@ or other documentation supplementing the material specification or in material specifications.ClassificationThis specification covers two classes of trace element control@ defined by the elements to be controlled as follows:Class 1 - Lead@ Bismuth@ Selenium@ Tellurium@ and ThalliumClass 2 - Lead@ Bismuth@ Selenium@ Tellurium@ Thallium@ and Others (See 3.1.2)Class 3 - Cancelled@ use Class 1Class 4 - Cancelled@ use Class 2When trace element control is required@ the elements to be controlled shall be indicated by this specification number and a suffix number indicating the class. For example@ AMS 2280-1 indicates that control of lead@ bismuth@ selenium@ tellurium@ and thallium is required. If no class is indicated@ Class 1 shall apply.

SAE AMS2280-1975 history