Historical

SAE J1868_199006

Name: SAE J1868_199006 PDF | Request Standard
SKU: f076698a799d

RESTRICTED HARDENABILITY BANDS FOR SELECTED ALLOY STEELS

Standard by SAE International, 1990-06-01

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SAE J1868_199006.PDFSecure PDF
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Language: English
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About This Item

Restricted hardenability steels have been in use for some time but the specific restrictions for a particular grade depend upon customer needs and vary from mill to mill. Such steels are desirable to provide more controlled heat treatment response and dimensional control for critical parts. Because of increasing interest in steels with restricted hardenability, the SAE Iron and Steel Technical Committee directed Division 8 to prepare a set of standard steels with restricted hardenability. In general, steels with restricted hardenability (RH steels) will exhibit a hardness range not greater than 5 HRC at the initial position on the end-quench hardenability bar and not greater than 65% of the hardness range for standard H-band steels (see SAE J1268) in the "inflection" region. Generally the restricted hardenability band follows the middle of the corresponding standard H-band. An example of the RH band compared with the standard H-band is given for SAE 4140 in Figure 1.

SKU: f076698a799d

Publication Date: 1990-06-01

Standard Status: historical

Publisher: SAE International

Document Type: Ground Vehicle Standard

Subject: Steel, Heat treatment, Alloys, Iron, Chromium, Copper, Nickel, Chemicals,

Official SAE: Doi link

New Version Available: J1868_201002 (2010-02-15)
Previous Version: J1868_199309 (1993-09-01)
This Version: J1868_199006 (1990-06-01)
Previous Version: J1868_198802 (1988-02-01)

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