SAE AS 3215B:2018 pdf free

SAE AS 3215B:2018 pdf free.Gas Nitriding of Low-Alloy Steel Parts
This document specifies the procedure and requirements for gas nitriding low-alloy and tool steels by the use of raw or dissociated ammonia. Additional alloys and steel families (e.g., stainless steels) can also be nitrided using parameters acceptable to the cognizant engineering organization.
The nitriding process described herein has been used typically for producing a wear resistant and fatigue resistant surface on steel parts, but usage is not limited to such applications. This process only applies to gas nitriding. Other processes, such as salt bath nitriding per AMS2753, ion nitriding per AMS2759/8, automated gas nitriding controlled by nitriding potential per AMS2759/10, automated gas nitrocarburizing by potential per AMS2759/12 and gas nitrocarburizing per AMS2757, are not included.
In addition to those listed in AMS2759, the issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply.
Equipment used for measuring the gas dissociation shall be at the exit of the retort or furnace and shall be checked periodically for accuracy. Water absorption techniques (burette) are acceptable, but infrared analysis or in-situ probes are preferred. The accuracy of burettes is defined as clean and readable.
Shall be fine grained copper plate, not less than 0.001 inch (25 μm) in thickness, applied in accordance with AMS2418 or bronze plate, not less than 0.0005 inch (12.7 μm) in thickness, applied in accordance with AMS2429. Paints, pastes, or mechanical methods may be used if acceptable to the cognizant engineering organization. Aditionally, maskants shall be checked visually for evidence of blistering after nitriding but before subsequent stripping and etching.SAE AS 3215B pdf free download.