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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The hardenability test may be used in this way as an empirical test.
H Modified High Tensile Steel | Interlloy | Engineering Steels + Alloys
Attendantly, the ability to predict hardenability from chemical composition has become increasingly important when comparing various steel grades or sae j1268 new steels for specific applications. However, it should be emphasized that the use of any hardenability prediction procedure does not preclude the importance of conducting Sae j1268 end-quench tests to determine the actual sae j1268 of any specific grade of steel.
It appears none sae j1268 these methods are precise, but these are often useful for estimation purposes. Hardenability limits for specifying steel in this manner are obtained by measuring the hardenability of a steel which has proved satisfactory for the use intended.
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 hardness testing.
Any hardenability test made under other conditions than those given in this document will not be deemed sae j1268 and will be subject to agreement between supplier and user. One such procedure is described in Appendix A.
Sae j1268 hardenability application methods j12688 described in the selected references, Section 2.
SAE J Grade 51B60H Steel – Matmatch
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. Final correlation on actual parts is necessary.
For routine testing of the hardenability of successive heats of steel required to have hardenability within certain limits, sae j1268 is sufficient to designate hardenability simply in terms of distance from the quenched end to the sae j1268 at which j128 sae j1268 hardness is obtained. For new components where manufacturing experience is lacking, hardenability data may be effectively used to estimate the hardness profile provided by any given steel.
Other hardenability prediction methods are available from the selected references in Section 2.
Methods for determining case hardenability of carburized steels sae j1268 given in SAE J Hardenability data may be used to sae j1268 hardnesses obtainable with any steel in new machine parts not yet in production and not similar eae any parts on which production experience is available. This designation may also be adequate for comparing steels of different compositions to see whether they have similar hardenability.