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SAE AMS6378J

Name: SAE AMS6378J PDF | Request Standard
SKU: 7e883735e049

Steel Bars 1.0Cr - 0.20Mo - 0.45Se (0.39 - 0.48C) (4142H Modified) Die-Drawn, 130 ksi (896 MPa) Yield Strength Free Machining

Standard by SAE International, 2024-12-18

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SAE AMS6378J.PDFSecure PDF
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Language: English
License Type: Single User
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Language: English
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About This Item

This specification covers a free-machining, low-alloy steel in the form of round bars 3.50 inches (88.9 mm) and under in nominal diameter produced by a die-drawing process. AMS6378J is the result of a Five-Year Review and update of the specification. The revision addresses grain refiners (see 3.1.1, 3.3.2, 4.2.1, 4.2.2, and 8.8), updates composition reporting (see 3.1.2), updates die discussion and microstructure requirements (see 3.2 and 3.2.1), updates macroetch to clarify that both billet and bar do not require test (and/or evaluation) (see 3.3.1), revises decarburization evaluation method (see 3.3.3.3), adds ordering guidance (see 8.6), and updates the prohibition of exceptions requirements (see Table 2, 3.3.4.2, 4.4.2, and 8.7).

SKU: 7e883735e049

Publication Date: 2024-12-18

Standard Status: latest

Publisher: SAE International

Document Type: Aerospace Material Specification

Subject: Steel, Machining processes, , , , , , ,

Official SAE: Doi link

This Version: AMS6378J (2024-12-18)
Previous Version: AMS6378H (2019-07-26)
Previous Version: AMS6378G (2014-08-25)
Previous Version: AMS6378F (2010-05-19)
Previous Version: AMS6378E (1995-05-01)
Previous Version: AMS6378D (1989-10-01)
Previous Version: AMS6378C (1983-04-01)
Previous Version: AMS6378B (1981-10-01)
Previous Version: AMS6378A (1973-05-15)
Previous Version: AMS6378 (1961-07-15)

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