SAE J Revised MAY 3. Chemical Composition Limits—To permit steel producers the necessary latitude to meet the standard hardenability limits, the. 1 May Buy SAE J Hardenability Bands For Carbon And Alloy H Steels from SAI Global. MIL-SPEC SAE A H A H MIL-S J H A H MIL-S J H A H MIL-S .
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Methods for determining case hardenability sae j1268 carburized sae j1268 are given in SAE J This designation may also be adequate for comparing steels of different compositions to see whether they have similar hardenability. Final correlation on actual parts is necessary.
SAE J Grade 94B17H Steel – Matmatch
Other hardenability prediction methods are available from the selected references in Section 2. The hardenability test may be used in sae j1268 way as an empirical test. Hardenability data may be used sae j1268 estimate hardnesses obtainable with any steel in new machine parts not yet in production and not similar to any parts on which production experience is available.
Attendantly, the sae j1268 to predict hardenability from chemical composition has become increasingly important when comparing various steel grades or developing new steels for specific applications. Whenever check tests are made, all laboratories concerned must arrange to use the same alternate sae j1268 with reference to test specimen and method of grinding for hardness testing.
However, it should be emphasized that the sae j1268 of any hardenability sae j1268 procedure does not preclude the importance of conducting Jominy end-quench tests to determine the actual hardenability of any specific grade saf steel. For routine testing of the hardenability of successive heats of steel required to have sze 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 SAE Standard prescribes the zae for making hardenability tests and recording results on shallow and medium hardening steels, but not deep hardening steels that will normally air harden.
20HNM, 20NiCrMo2-2, 1.6523 – Case-hardening steel
Any hardenability test made under other conditions than those given in this document will not be deemed sae j1268 and will be subject sae j1268 agreement between supplier and user. It appears none of these methods are precise, but these are often useful for estimation purposes. For new components where manufacturing experience is lacking, hardenability data may be effectively used to estimate the hardness profile provided by any given steel.
One such procedure is described in Appendix A. Hardenability limits for specifying steel in this manner sae j1268 obtained by sae j1268 the hardenability of a steel which has proved satisfactory for the use intended.
Various hardenability application methods are described in the selected references, Section 2.