SAE AMS 5678G:2020 pdf free

SAE AMS 5678G:2020 pdf free.Steel, Corrosion Resistant, Wire 17Cr – 7.1NI – 1.1AI Cold Drawn, Precipitation-Hardenable
Wire shall exhibit a martensitic microstructure having (a) no circumferential surface layer of retained austenite of depth equal to or greater than 0.002 inch (0.05 mm) or 5% of the wire diameter, whichever is smaller, and (b) extending more than 45 degrees in any continuous arc, determined on a cross-section which is metallographically prepared in accordance with ASTM E3, etched with Fry’s Reagent (see 8.2), and examined at 100X magnification. Both the depth of layer and circumferential extent must be exceeded in the same sample for the wire to be non-conforming. Random patches of internal retained austenite, especially near the center of large diameter wire, are acceptable.
The producer of wire shall furnish with each shipment a report showing the producer’s name and country where the metal was melted (e.g., final melt in the case of metal processed by multiple melting operations) and the results of tests for composition of each heat and for tensile properties of Conditions C and CH900, and stating that the product conforms to the other technical requirements. This report shall include the purchase order number, heat and lot numbers, AMS5678G,nominal size, and quantity.
When material produced to this specification has exceptions authorized by purchaser taken to the technical requirements listed in Section 3 (see 5.2.1)， the report shall contain a statement “This material is certified as AMS5678G(EXC) because of the following exceptions:” and the specific exceptions shall be listed.
A change bar (I) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only.SAE AMS 5678G pdf free download.