1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2010 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/J1268_201005SURFACEVEHICLESTANDARDJ1268 MAY2010 Issued 1980-06Revised 2010-05 Superseding J1268
5、 MAY1995 Hardenability Bands for Carbon and Alloy H Steels RATIONALEPage 2, Section 2.2.1 Corrected ASTM A 304 title to Carbon and Alloy .” Table 2: Corrected Mo Content from 0.80/.15 to 0.08/.15 grades H4118, H63106, H94151, H94171, H94301. Table 2 Note 1 Deleted Reference to Table 4 which is up fo
6、r review and not approved but left reference to SAE J409. 5. Page 5 Deleted SAE J418 because SAE cancelled it and replaced with equivalent ASTM E 112. 6.5 Paragraph 6 Page 6 Corrected typo, changed shall to shallow. 7. Page 6 Deleted reference to AISI Steel Products Manual because it is no longer pu
7、blished. Corrections to tables and images as follows: jominy values in SAE J1268 were compared with ASTM A 304-05. Page 11 1045H: Add missing values for J18, 20, 22, 24 and equivalent metric table and complete graphs. Page 12 1522H: Add missing values for J8, 9, 10, 12 and equivalent metric table an
8、d complete graphs. Page 13 1524H: Add missing values for J16 and equivalent metric table and complete graphs. Page 14 1526H: Add missing values for J14, 16, 18 and equivalent metric table and complete graphs. Page 15 1541H: Add missing values for J18, 20, 22, 24 and equivalent metric table and compl
9、ete graphs. Page 20 15B37H: Add missing values for J32 and equivalent metric table and complete graphs. Page 39, Figure 32: % Mo is incorrect. Change from 0.15/0.35 to 0.15/0.25. Page 62, Figure 55: Normalize temperature is wrong for metric jominy, change from 870 C to 900 C. Austenitize temperature
10、 is wrong for metric jominy, change from 845 C to 870 C. Page 76, Figure 69: Typo in Figure text at very bottom of page, change from H8627H to 8627H. SAE J1268 Revised MAY2010 Page 2 of 951. SCOPE All carbon and alloy H-band steels are shown, along with their corresponding minimum and maximum harden
11、ability limits, for which sufficient hardenability data have been established and for grades which use the standard end-quench test. As hardenability data are accumulated for other grades, this SAE Standard will be revised to include such grades. 2. REFERENCES 2.1 Applicable Publications The followi
12、ng publications form a part of the specification to the extent specified herein. Unless otherwise indicated the latest revision of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA a
13、nd Canada) or 724-776-4970 (outside USA), www.sae.org.SAE J403 Chemical Compositions of SAE Carbon Steels SAE J404 Chemical Compositions of SAE Alloy Steels SAE J406 Methods of Determining Hardenability of Steels SAE J409 Product AnalysisPermissible Variations from Specified Chemical Analysis of a H
14、eat or Cast of Steel SAE J418 Grain Size Determination of Steels SAE J1868 Restricted Hardenability Bands for Selected Alloy Steels 2.2 Related Publications The following publications are provided for information purposes only and are not a required part of this document. 2.2.1 ASTM Publications Ava
15、ilable from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.ASTM A 304 Steel Bars, Carbon and Alloy, Subject to End-Quench Hardenability Requirements ASTM E 112 Standard Test Methods for Determining Average Grain Size 3. CHE
16、MICAL COMPOSITION LIMITS To permit steel producers the necessary latitude to meet the standard hardenability limits, the chemical composition limits of these steels have been broadened somewhat from those limits applicable to the same grades when specified by chemical composition only (SAE J403 and
17、SAE J404). These broader limits permit adjustments in manufacturing ranges of composition to compensate for individual plant melting procedures which might otherwise influence the levels and widths of the bands. The modifications have not been great enough to influence the general characteristics of
18、 the original compositions of the series under consideration. The chemical composition limits for electric furnace, open hearth, and BOF steels are outlined in Tables 1 and 2 of this document and are subject to the permissible variations for product analysis outlined in Tables 1 and 3 of SAE J409. S
19、AE J1268 Revised MAY2010 Page 3 of 95TABLE 1 - CARBON AND CARBON BORON H STEEL (ladle chemical composition, weight %, for elements shown; see Figures 3 to 16 for respective H-bands) UNSNo.SAESteel No. C Mn Si P,max(1)S,max(1)H10380 1038H 0.34/0.43 0.50/1.00 0.15/0.35 0.030 0.050 H10450 1045H 0.42/0.
20、51 0.50/1.00 0.15/0.35 0.030 0.050 H15220 1522H 0.17/0.25 1.00/1.50 0.15/0.35 0.030 0.050 H15240 1524H 0.18/0.26 1.21/1.75 0.15/0.35 0.030 0.050 H15260 1526H 0.21/0.30 1.00/1.50 0.15/0.35 0.030 0.050 H15410 1541H 0.35/0.45 1.25/1.75 0.15/0.35 0.030 0.050 H15211 15B21H(2)0.17/0.24 0.70/1.20 0.15/0.35
21、 0.030 0.050 H15281 15B28H(2)0.25/0.34 1.00/1.50 0.15/0.35 0.030 0.050 H15301 15B30H(2)0.27/0.35 0.70/1.20 0.15/0.35 0.030 0.050 H15351 15B35H(2)0.31/0.39 0.70/1.20 0.15/0.35 0.030 0.050 H15371 15B37H(2)0.30/0.39 1.00/1.50 0.15/0.35 0.030 0.050 H15411 15B41H(2)0.35/0.45 1.25/1.75 0.15/0.35 0.030 0.0
22、50 H15481 15B48H(2)0.43/0.53 1.00/1.50 0.15/0.35 0.030 0.050 H15261 15B62H(2)0.54/0.67 1.00/1.50 0.40/0.60 0.030 0.050 1. If electric furnace practice is specified or required, the limits for phosphorus and sulfur are 0.025%, respectively, and the prefix E is added to the SAE number, for example, E1
23、038H. 2. These steels contain 0.0005 to 0.003% boron.SAE J1268 Revised MAY2010 Page 4 of 95TABLE 2(1)- STANDARD ALLOY H STEEL COMPOSITIONS (ladle chemical composition, weight %, for elements shown(2)(3)see Figures 17 to 88 for respective H-bands) UNSNo.SAESteel No. C Mn Si Ni Cr Mo VH13300 1330H 0.2
24、7/0.33 1.45/2.05 0.15/0.35 H13350 1335H 0.32/0.38 1.45/2.05 0.15/0.35 H13400 1340H 0.37/0.44 1.45/2.05 0.15/0.35 H13450 1345H 0.42/0.49 1.45/2.05 0.15/0.35 H40270 4027H 0.24/0.30 0.60/1.00 0.15/0.35 0.20/0.30 H40280(4)4028H(4)0.24/0.30 0.60/1.00 0.15/0.35 0.20/0.30 H40320 4032H 0.29/0.35 0.60/1.00 0
25、.15/0.35 0.20/0.30 H40370 4037H 0.34/0.41 0.60/1.00 0.15/0.35 0.20/0.30 H40420 4042H 0.39/0.46 0.60/1.00 0.15/0.35 0.20/0.30 H40470 4047H 0.44/0.51 0.60/1.00 0.15/0.35 0.20/0.30 H41180 4118H 0.17/0.23 0.60/1.00 0.15/0.35 0.30/0.70 0.08/0.15 H41200 4120H 0.18/0.23 0.90/1.20 0.15/0.35 0.40/0.60 0.13/0
26、.20 H41300 4130H 0.27/0.33 0.30/0.70 0.15/0.35 0.75/1.20 0.15/0.25 H41350 4135H 0.32/0.38 0.60/1.00 0.15/0.35 0.75/1.20 0.15/0.25 H41370 4137H 0.34/0.41 0.60/1.00 0.15/0.35 0.75/1.20 0.15/0.25 H41400 4140H 0.37/0.44 0.65/1.00 0.15/0.35 0.75/1.20 0.15/0.25 H41420 4142H 0.39/0.46 0.65/1.10 0.15/0.35 0
27、.75/1.20 0.15/0.25 H41450 4145H 0.42/0.49 0.65/1.10 0.15/0.35 0.75/1.20 0.15/0.25 H41470 4147H 0.44/0.51 0.65/1.10 0.15/0.35 0.75/1.20 0.15/0.25 H41500 4150H 0.47/0.54 0.65/1.10 0.15/0.35 0.75/1.20 0.15/0.25 H41610 4161H 0.55/0.65 0.65/1.10 0.15/0.35 0.65/0.95 0.25/0.35 H43200 4320H 0.17/0.23 0.40/0
28、.70 0.15/0.35 1.55/2.00 0.35/0.65 0.20/0.30 H43400 4340H 0.37/0.44 0.55/0.90 0.15/0.35 1.55/2.00 0.65/0.95 0.20/0.30 H43406(5)E4340H(5)0.37/0.44 0.60/0.95 0.15/0.35 1.55/2.00 0.65/0.95 0.20/0.30 H46200 4620H 0.17/0.23 0.35/0.75 0.15/0.35 1.55/2.00 0.20/0.30 H47180 4718H 0.15/0.21 0.60/0.95 0.15/0.35
29、 0.85/1.25 0.30/0.60 0.30/0.40 H47200 4720H 0.17/0.23 0.45/0.75 0.15/0.35 0.85/1.25 0.30/0.60 0.15/0.25 H48150 4815H 0.12/0.18 0.30/0.70 0.15/0.35 3.20/3.80 0.20/0.30 H48170 4817H 0.14/0.20 0.30/0.70 0.15/0.35 3.20/3.80 0.20/0.30 H48200 4820H 0.17/0.23 0.40/0.80 0.15/0.35 3.20/3.80 0.20/0.30 H50401(
30、6)50B40H(6)0.37/0.44 0.65/1.10 0.15/0.35 0.30/0.70 H50441(6)50B44H(6)0.42/0.49 0.65/1.10 0.15/0.35 0.30/0.70 H50460 5046H 0.43/0.50 0.65/1.10 0.15/0.35 0.13/0.43 H50461(6)50B46H(6)0.43/0.50 0.65/1.10 0.15/0.35 0.13/0.43 H50501(6)50B50H(6)0.47/0.54 0.65/1.10 0.15/0.35 0.30/0.70 H50601(6)50B60H(6)0.55
31、/0.65 0.65/1.10 0.15/0.35 0.30/0.70 SAE J1268 Revised MAY2010 Page 5 of 95TABLE 2(1)- STANDARD ALLOY H STEEL COMPOSITIONS (ladle chemical composition, weight %, for elements shown(2)(3)see Figures 17 to 88 for respective H-bands) (Continued) UNSNo.SAESteel No. C Mn Si Ni Cr Mo VH51200 5120H 0.17/0.2
32、3 0.60/1.00 0.15/0.35 0.60/1.00 H51300 5130H 0.27/0.33 0.60/1.00 0.15/0.35 0.75/1.20 H51320 5132H 0.29/0.35 0.50/0.90 0.15/0.35 0.65/1.10 H51350 5135H 0.32/0.38 0.50/0.90 0.15/0.35 0.70/1.15 H51400 5140H 0.37/0.44 0.60/1.00 0.15/0.35 0.60/1.00 H51470 5147H 0.45/0.52 0.60/1.05 0.15/0.35 0.80/1.25 H51
33、500 5150H 0.47/0.54 0.60/1.00 0.15/0.35 0.60/1.00 H51550 5155H 0.50/0.60 0.60/1.00 0.15/0.35 0.60/1.00 H51600 5160H 0.55/0.65 0.65/1.10 0.15/0.35 0.60/1.00 H51601(6)51B60H(6)0.55/0.65 0.65/1.10 0.15/0.35 0.60/1.00 H61180 6118H 0.15/0.21 0.40/0.80 0.15/0.35 0.40/0.80 0.10/0.15H61500 6150H 0.47/0.54 0
34、.60/1.00 0.15/0.35 0.75-1.20 0.15 minH81451(6)81B45H(6)0.42/0.49 0.70/1.05 0.15/0.35 0.15/0.45 0.30/0.60 0.08/0.15 H86170 8617H 0.14/0.20 0.60/0.95 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86200 8620H 0.17/0.23 0.60/0.95 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86220 8622H 0.19/0.25 0.60/0.95 0.15/0
35、.35 0.35/0.75 0.35/0.65 0.15/0.25 H86250 8625H 0.22/0.28 0.60/0.95 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86270 8627H 0.24/0.30 0.60/0.95 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86300 8630H 0.27/0.33 0.60/0.95 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86301(6)86B30H(6)0.27/0.33 0.60/0.95 0.15/0.35
36、 0.35/0.75 0.35/0.65 0.15/0.25 H86370 8637H 0.34/0.41 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86400 8640H 0.37/0.44 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86420 8642H 0.39/0.46 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86450 8645H 0.42/0.49 0.70/1.05 0.15/0.35 0.35/0.
37、75 0.35/0.65 0.15/0.25 H86451(6)86B45H(6)0.42/0.49 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86500 8650H 0.47/0.54 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86550 8655H 0.50/0.60 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.15/0.25 H86600 8660H 0.55/0.65 0.70/1.05 0.15/0.35 0.35/0.75
38、0.35/0.65 0.15/0.25 H87200 8720H 0.17/0.23 0.60/0.95 0.15/0.35 0.35/0.75 0.35/0.65 0.20/0.30 H87400 8740H 0.37/0.44 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.20/0.30 H88220 8822H 0.19/0.25 0.70/1.05 0.15/0.35 0.35/0.75 0.35/0.65 0.30/0.40 H92590 9259H 0.56/0.64 0.65/1.10 0.70/1.20 0.45/0.65 H92600 9
39、260H 0.55/0.65 0.65/1.10 1.70/2.20 H93106(5)E9310H(5)0.07/0.13 0.40/0.70 0.15/0.35 2.95/3.55 1.00/1.45 0.08/0.15 SAE J1268 Revised MAY2010 Page 6 of 95TABLE 2(1)- STANDARD ALLOY H STEEL COMPOSITIONS (ladle chemical composition, weight %, for elements shown(2)(3)see Figures 17 to 88 for respective H-
40、bands) (Continued) UNSNo.SAESteel No. C Mn Si Ni Cr Mo VH94151(6)94B15H(6)0.12/0.18 0.70/1.05 0.15/0.35 0.25/0.65 0.25/0.55 0.08/0.15 H94171(6)94B17H(6)0.14/0.20 0.70/1.05 0.15/0.35 0.25/0.65 0.25/0.55 0.08/0.15 H94301(6)94B30H(6)0.27/0.33 0.70/1.05 0.15/0.35 0.25/0.65 0.25/0.55 0.08/0.15 1. The ran
41、ges and limits on this table apply only to material not exceeding 0.13 m2(200 in2) in cross-sectional area, 460 mm (18 in) in width, or 4.5 tonne (10 000 lb) per piece in weight. Ranges and limits are subject to the permissible variations for product analysis shown in SAE J409.2. Small quantities of
42、 certain elements may be found in alloy steel which are not specified or required. These elements are consideredincidental and acceptable to the following maximum amounts: copper to 0.35%, nickel to 0.25%, chromium to 0.20%, and molybdenum to 0.06%.3. For open hearth and basic oxygen steels maximum
43、sulfur content is 0.040% and maximum phosphorus content is 0.030%. Maximum phosphorus and sulfur in basic electric furnace steels are 0.025% each. 4. Sulfur content range is 0.035/0.050%. 5. Electric furnace steel. 6. These steels contain 0.0005 to 0.003% boron.4. IDENTIFICATION As a means of identi
44、fying steels specified to hardenability band limits, the suffix letter “H” has been added to the conventional series number. In the Unified Numbering System (UNS), the “H” appears as a prefix. It is important the steel consumers use this letter in specification requirements, as there is no other mea
45、ns of determining when hardenability band limits apply. When the letter is used, all conditions pertaining to chemical composition limits, restrictions, testing techniques, and so forth, as outlined herein apply 5. GRAIN SIZE The H-band limits set forth are intended to apply to steels exhibiting aus
46、tenitic grain size ASTM No. 5 or finer (see ASTM E 112). In cases where coarse grain steel is desired, the hardenability limits shall be a matter of agreement between the producer and the consumer. 6. USE OF HARDENABILITY LIMITS H-band limits are shown graphically and are so depicted for convenience
47、 in estimating the hardness value obtainable at the various locations on the end quench test specimen and for quick comparisons of the various H grades. The values of Diameter of Rounds, with Same As-Quenched Hardness shown above each H-band, are approximate and were selected from the ranges appeari
48、ng in Figure 7 of SAE J406. It should be noted that hardenability limits are presented graphically in both U.S. customary units and metric (SI) units. The metric hardenability bands were prepared by careful conversion from existing bands in U.S. customary units. In either case, for specification purposes, the tabulated values of Rockwell C hardness (HRC) are used. Values below 20 HRC are not specified because such values are not as accura
