SAE J406-1993
钢淬透性的测定方法

METHODS OF DETERMINING HARDENABILITY OF STEELS

被代替

SAE J406-1993 发布历史

SAE J406-1993由SAE - SAE International 发布于 1993-06-14，并于 2013-02-06 实施。

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SAE J406-1993的历代版本如下：

• 2009年 SAE J406-2009 钢的淬硬性测定方法
• 1998年 SAE J406-1998 测定钢的淬硬性方法
• 1995年 SAE J406-1995 钢淬透性的测定方法
• 1993年 SAE J406-1993 钢淬透性的测定方法
• 1990年 SAE J406-1990 钢淬透性的测定方法
• 1985年 SAE J406-1985 钢淬透性的测定方法
• 1977年 SAE J406C-1977 钢淬透性的测定方法

This SAE Standard prescribes the procedure for making hardenability tests and recording results on shallow and medium hardening steels@ but not deep hardening steels that will normally air harden. Included are procedures using the 25 mm (1 in) standard hardenability end-quench specimen for both medium and shallow hardening steels and subsize method for bars less than 32 mm (1-1/4 in) in diameter. Methods for determining case hardenability of carburized steels are given in SAE J1975. Any hardenability tests made under other conditions than those given in this document will not be deemed standard and will be subject to agreement between supplier and user. Whenever check tests are made@ all laboratories concerned must arrange to use the same alternate procedure with reference to test specimen and method of grinding for harness testing. For routine testing of the hardenability of successive heats of steel required to have hardenability within certain limits@ it is sufficient to designate hardenability simply in terms of distance from the quenched end to the point at which a certain hardness is obtained. This designation may also be adequate for comparing steels of different compositions to see whether they have similar harden ability. Hardenability limits for specifying steel in this manner are obtained by measuring the hardenability of a steel which has proved satisfactory for use intended. The hardenability test may be used in this way as an empirical test. For new components where manufacturing experience is lacking@ hardenability data may be effectively used to estimate the hardness profile provided by any given steel. Attendantly@ the ability to predict hardenability from chemical composition has become increasingly important when comparing various steel grades or developing new steels for specific applications. One such procedure is described in Appendix A. Other hardenability prediction methods are available from the selected references in section 2. However@ it should be emphasized that the use of any hardenability prediction procedure does not preclude the importance of conducting Jominy end-quench tests to determine the actual hardenability of any specific grade of steel. Hardnability data may be used to estimate hard nesses obtainable with any steel in new machine parts not yet in production and not similar to any parts on which production experience is available. Various hardenability application methods are described in the selected references@ Section 2@ 23 to 25. It appears none of these methods are precise@ but these are often useful for estimation purposes. Final correlation on actual parts is necessary.

标准号

SAE J406-1993

发布

1993年

发布单位

SAE - SAE International

替代标准

SAE J406-1995

当前最新

SAE J406-2009

 

 

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