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NFPA T2.6.1 R2 Document Information:
Title
Fluid Power components - Method for verifying the fatigue and establishing the burst pressure ratings of the pressure containing envelope of a metal fluid power component
National Fluid Power Association
Publication Date:
Mar 5, 2001
Scope:
This standard provides:
-test and statistical methods for generating fatigue distribution data;
-test and statistical methods for conducting a verification of the pressure ratings on fluid power components;
-common requirements and an industry-wide philosophy in judging one type of pressure capability for fluid power components;
-uniform methods of product comparison.
This standard limits conditions as follows:
-constant amplitude, pressure induced loading of the elements that constitute or maintain the pressure containing envelope;
-product life of at least 100,000 cycles;
-defined conditions for pressure levels and pulse durations;
-temperatures from the charpy impact transition temperature to the threshold of creep sensitivity;
-environments which are chemically compatible with the materials of the pressure containing envelope;
-materials that are aluminum, magnesium, steel, iron, copper based alloys, cobalt, titanium, stainless steels, nickel steels and monel. Specifically excluded are creep sensitive materials such as: zinc, plastic, rubber and sealing devices.
This standard encourages manufacturers to use this common method to enhance the credibility of their pressure ratings.
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