Originally Standard ASTM Hardenability Charts (81⁄2 by 11 in. pads of 50 charts) are approved in Last previous edition approved in as A – Purchase your copy of ASTM A – 10() as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. Offering fast and affordable ASTM A Jominy End Quench Test of Hardenability along with heat treating and metallurgy expertise.
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Cast testsneednot be normalized. Dnnensions of the pretered specimenand of aD optional specimen Nole: I end-quench hardenability hddenabiliqr i luned DI DI: The two test methods include the quantitative end-quench or Jominy Test and a method for calculating the hardenability of steel from the chemical composition based on the original work by M.
Examplesof rhis method are Jal6 jn. Placc a disk of graphiteo. Etch in solulion No. Crossman and provides increased accuracy refinemenr the carbon multiplying asrm by of the conelationof a boron factor B-F with cnrbon and alloy were basedon analysisoi thou’ content.
The orifice size and distance the specrmen of r. Historical Version s – view previous versions of standard Translated Version s: A salisfaciorytype oi suppofl for he slanddrd1. L l CalculatedDI and Jominy hardenabililycurves are valid only within the chemicalrangesstatedabove. Hardnoss 17 4 Dlvldlng Factors BoronSteels.
ASTM A – 10 Standard Test Methods for Determining Hardenability of Steel
Dnabdi E,v0hg FaCu,r tn. Prcgrcs, Novenber87 I and of such size as to permit lhe remolal ofall deca.
Multiplying Factors in Table 6 are calculated from the equations in Table I 1. The positioningol tbe indentershouldbe checkedwith sulllcienlliequencyto provideassufance accuracy lhat requiremenls are being met.
The higherthe carbon or alloy conteDt, both, the lowef the boron factor or Slrallower ground depths can afilct reproducibjlity ofresults,and corelation wirh cooling ra x255 quenched ba. Dn, dng Fictoc tor Non-Bo. Harderability curves oblainedfrom lests on these smaller specimeDs therefore are not comparablewith curves obtained tiom tesls on the slandard 1.
Jominy Distance for 50 9. A facsimile of the slandard ASTM hardenability chanr on which lypical hardenabilily zstm havebeenploted is shown in Fig. For rhe examplein The procedure in p.
In producriontesting slightly loDger fof times ut! Harddess, HRC 49 4A 41 50 50 47 45! These inflections will be minoa however and should be disregarded. A rank of rufficienl crpaciry lo maintarnthe warer lemperalure requirements of 6.
Doane, V, andBreen, H.
Then placethe healedspecimen lhe in supportso thrt jis bottom lace is 0. Yut camank wit taeive caEtut cffiid. ThenmakeRockwell hardness measurementson the C scaleon the specimen Fescribed in 6. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.