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SAE J1397


400 Commonwealth Drive, Warrendale, PA 15096-0001

SURFACE VEHICLE INFORMATION REPORT
An American National Standard

J1397

REV. MAY92 1982-07 1992-05


Issued Revised

Superseding J1397 DEC88

(R) ESTIMATED MECHANICAL PROPERTIES AND MACHINABILITY OF STEEL BARS

Foreword—This Document has also changed to comply with the new SAE Technical Standards Board format. 1. Scope—This SAE Information Report is intended to provide a guide to mechanical and machinability characteristics of some SAE steel grades. The ratings and properties shown are provided as general information and not as requirements for specifications unless each instance is approved by the source of supply. The data are based on resources which may no longer be totally accurate. However, this report is retained as a service in lieu of current data. References Applicable Publication—The following publication forms a part of this specification to the extent specified herein. U. S. Air Force Machinability Report, Volume 2, 1951, published by Curtiss-Wright Corporation 2.2 Related Publications—The following publications are provided for information purposes only and are not a required part of this document. Metals Handbook, 8th ed., Volume 3, Machining, American Society for Metals, Metals Park, OH 44073. Machining Data Handbook, Volumes 1 and 2. Machinability Data Center, Metcut Research Associates, 3980 Rosslyn Drive, Cincinnati, OH 45209. 3. Carbon Steel—Mechanical properties and machinability ratings for carbon steel grades 10xx, 11xx, 12xx, and 15xx are listed in Tables 1, 2, and 3. These properties can generally be expected from bars ranging in size from 20 to 30 mm (3/4 to 1-1/4 in) based on the standard round tensile test specimen with 50 mm (2 in) gage length. Sizes under 20 mm (3/4 in) will show a strength which is slightly higher than those shown in the Tables. The mass effect of larger sections has a direct influence on mechanical properties and results in slightly lower values as the section size increases.
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2. 2.1

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 therefrom, 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. QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243 TO PLACE A DOCUMENT ORDER; (724) 776-4970 FAX: (724) 776-0790 SAE WEB ADDRESS http://www.sae.org Copyright 1992 Society of Automotive Engineers, Inc. All rights reserved.
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Printed in U.S.A.

SAE J1397 Revised MAY92 Properties of turned and polished or turned and ground types of cold finished material will correspond to the hot rolled values. The cold drawn properties are based on conventional production from hot rolled bars. Cold drawn carbon steel bars in grades 1042 and higher are frequently thermally treated prior to cold drawing to enhance machinability. 4. Alloy Steel—Hardness and machinability ratings for cold drawn alloy steel bars are listed in Table 4 with the appropriate microstructure. The microstructure listed for alloy steels in Table 4 is identified as follows: a. Type A—Predominantly lamellar pearlite and ferrite. b. Type B—Predominantly spheroidized. c. Type C—This is a hot rolled structure which depends upon grade, size, and rolling conditions of the producing mill. The structure may be coarse or fine pearlite or bainite. The pearlite at low magnification may be blocky or acicular. For descriptive information, see U. S. Air Force Machinability Report, Volume 2, 1951, published by Curtiss-Wright Corporation. d. Type D—This is a structure resulting from a subcritical anneal or temper anneal. It is usually a granular or spheroidized carbide condition confined to the hot rolled grain pattern, which may be blocky or acicular. 5. Machinability—While it is recognized that the views regarding alloy steel machinability vary considerably, it is believed that the ratings contained in this report reflect current industry experience. The data on which the ratings were based were obtained by a detailed survey of both producers and users. The data summarize the combined experience of both groups. Various factors influence machinability and, therefore, results shown in Table 1 are average and may be affected to some degree by the amount of cold reduction, mechanical properties, grain size, microstructure, type of tooling, and machining operation(s) performed. The machinability ratings listed are based on a value of 100% for SAE 1212 cold drawn steel. This value involves turning at a cutting speed of 55 m (180 surface feet) per minute for feeds up to 0.18 mm (0.007 in) per revolution and depths of cut up to 6.4 mm (0.250 in), using appropriate cutting fluids with high speed steel tools, SAE Grade T-1 (18-4-1) hardened to 63-65 HRC (SAE J437, J438). Most low carbon alloy steels are machined in the as-rolled or as-rolled and cold drawn or cold finished condition. Higher carbon alloy steels and high hardenability low carbon steels, such as SAE 9310, may be conditioned for machining by a variety of heat treatments. Thermal treatments used to condition these steels for machining include subcritical annealing, annealing for softening to no specified structure, annealing to a specified structure such as lamellar pearlite or a percentage of lamellar pearlite and spheroidization, or to a fully spheroidized condition. The structures imparted to the bars are evaluated in the machining operation by the tooling setup and the type of tool used. It is possible to use widely diverging hardnesses and structures with different tooling setups and obtain satisfactory results both as to finish and parts per hour.

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SAE J1397 Revised MAY92

TABLE 1—ESTIMATED MECHANICAL PROPERTIES AND MACHINABILITY RATINGS OF NONRESULFURIZED CARBON STEEL BARS, MANGANESE 1.00% MAXIMUM
Estimated Estimated Estimated Minimum Minimum Minimum Values Values Values Tensile Yield Yield Elongation Reduction Strength Strength Strength in in Brinell psi MPa psi 2 in, % Area % Hardness 43 000 48 000 44 000 49 000 47 000 53 000 48 000 54 000 50 000 56 000 55 000 61 000 53 000 59 000 58 000 64 000 59 000 66 000 55 000 61 000 61 000 68 000 62 000 69 000 56 000 62 000 58 000 64 000 64 000 71 000 170 280 170 290 180 300 180 310 190 320 210 350 200 340 220 370 220 380 210 350 230 390 230 400 210 360 220 370 240 410 24 000 41 000 24 500 41 500 26 000 44 000 26 500 45 000 27 500 47 000 30 000 51 000 29 000 49 000 32 000 54 000 32 500 55 000 30 000 51 000 33 000 57 000 34 000 58 000 31 000 52 500 32 000 54 000 35 000 60 000 30 20 30 20 28 20 28 19 28 18 25 18 26 18 25 15 25 15 25 15 24 15 23 15 25 15 25 15 24 15 55 45 55 45 50 40 50 40 50 40 50 40 50 40 50 40 50 40 50 40 48 40 47 40 50 40 50 40 49 40 86 95 86 95 95 105 95 105 101 111 111 121 105 116 116 126 116 131 111 121 116 131 121 137 111 121 116 126 126 143 75 65 65 70 70 65 70 70 65 70 60 55 55 55 50 Average Machinability Rating (Cold Drawn) 1212=100%

UNS No. G10060

SAE and/or AISI No. 1006

Type of Processing Hot Rolled Cold Drawn

Tensile Strength MPa 300 330 303 340 320 370 330 370 340 390 380 420 370 410 400 440 410 460 380 420 420 470 430 480 370 430 400 440 440 490

G10080

1008

Hot Rolled Cold Drawn

G10100

1010

Hot Rolled Cold Drawn

G10120

1012

Hot Rolled Cold Drawn

G10150

1015

Hot Rolled Cold Drawn

G10160

1016

Hot Rolled Cold Drawn

G10170

1017

Hot Rolled Cold Drawn

G10180

1018

Hot Rolled Cold Drawn

G10190

1019

Hot Rolled Cold Drawn

G10200

1020

Hot Rolled Cold Drawn

G10210

1021

Hot Rolled Cold Drawn

G10220

1022

Hot Rolled Cold Drawn

G10230

1023

Hot Rolled Cold Drawn

G10250

1025

Hot Rolled Cold Drawn

G10260

1026

Hot Rolled Cold Drawn

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SAE J1397 Revised MAY92 TABLE 1—ESTIMATED MECHANICAL PROPERTIES AND MACHINABILITY RATINGS OF NONRESULFURIZED CARBON STEEL BARS, MANGANESE 1.00% MAXIMUM (CONTINUED)
Estimated Estimated Estimated Minimum Minimum Minimum Values Values Values Tensile Yield Yield Elongation Reduction Strength Strength Strength in in Brinell psi MPa psi 2 in, % Area % Hardness 68 000 76 000 72 000 80 000 74 000 82 000 75 000 83 000 79 000 88 000 76 000 85 000 80 000 89 000 85 000 82 000 91 000 87 000 80 000 82 000 91 000 85 000 85 000 94 000 90 000 87 000 97 000 92 000 90 000 100 000 95 000 260 440 270 460 280 480 280 480 300 510 290 490 300 520 500 310 530 520 300 310 530 500 320 540 520 330 560 530 340 580 550 37 500 64 000 39 500 67 000 40 500 69 000 41 000 70 000 43 500 74 000 42 000 71 000 44 000 75 000 73 000 45 000 77 000 75 000 44 000 45 000 77 000 73 000 47 000 79 000 75 000 48 000 81 500 77 000 49 500 84 000 80 000 20 12 18 12 18 12 18 12 16 12 18 12 16 12 12 16 12 12 16 16 12 12 15 12 12 15 10 10 15 10 10 42 35 40 35 40 35 40 35 40 35 40 35 40 35 45 40 35 45 40 40 35 45 40 35 45 35 30 40 35 30 40 137 149 143 163 143 167 149 163 156 179 149 170 163 179 179 163 179 179 163 163 179 170 170 187 179 179 197 187 179 197 189 45 55 45 55 55 65 55 65 60 70 60 70 60 60 65 65 65 70 Average Machinability Rating (Cold Drawn) 1212=100%

UNS No. G10300

SAE and/or AISI No. 1030

Type of Processing Hot Rolled Cold Drawn

Tensile Strength MPa 470 520 500 550 510 570 520 570 540 610 520 590 550 610 590 570 630 600 550 570 630 590 590 650 620 600 670 630 620 690 660

G10350

1035

Hot Rolled Cold Drawn

G10370

1037

Hot Rolled Cold Drawn

G10380

1038

Hot Rolled Cold Drawn

G10390

1039

Hot Rolled Cold Drawn

G10400

1040

Hot Rolled Cold Drawn

G10420

1042

Hot Rolled Cold Drawn NCD(1)

G10430

1043

Hot Rolled Cold Drawn NCD(1)

G10440 G10450

1044 1045

Hot Rolled Hot Rolled Cold Drawn ACD
(2)

G10460

1046

Hot Rolled Cold Drawn ACD(2)

G10490

1049

Hot Rolled Cold Drawn ACD(2)

G10500

1050

Hot Rolled Cold Drawn ACD(2)

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SAE J1397 Revised MAY92 TABLE 1—ESTIMATED MECHANICAL PROPERTIES AND MACHINABILITY RATINGS OF NONRESULFURIZED CARBON STEEL BARS, MANGANESE 1.00% MAXIMUM (CONTINUED)
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UNS No. G10550

SAE and/or AISI No. 1055

Type of Processing Hot Rolled ACD
(2)

Tensile Strength MPa 650 660 680 620 670 610 690 630 700 640 720 650 690 650 770 680 820 690 830 690 770 670 840 700 830 680

Estimated Estimated Estimated Minimum Minimum Minimum Values Values Values Tensile Yield Yield Elongation Reduction Strength Strength Strength in in Brinell psi MPa psi 2 in, % Area % Hardness 94 000 96 000 98 000 90 000 97 000 89 000 100 000 92 000 102 000 93 000 105 000 94 500 100 000 94 000 112 000 98 000 119 000 100 000 121 000 100 500 112 000 97 000 122 000 101 000 120 000 99 000 360 560 370 480 370 480 380 490 390 500 400 500 380 500 420 520 450 530 460 540 420 510 460 540 460 520 51 500 81 000 54 000 70 000 53 500 69 000 55 000 71 000 56 000 72 000 58 000 73 000 55 000 72 500 61 500 75 000 65 500 77 000 66 500 78 000 61 500 74 000 67 000 78 000 66 000 76 000 12 10 12 10 12 10 12 10 12 10 12 10 12 10 10 10 10 10 10 10 10 10 10 10 10 10 30 40 30 45 30 45 30 45 30 45 30 40 30 40 25 40 25 40 25 40 25 40 25 40 25 40 192 197 201 183 201 183 207 187 212 192 217 192 207 192 229 192 241 192 248 192 229 192 248 197 248 197

Average Machinability Rating (Cold Drawn) 1212=100%

55

G10600

1060

Hot Rolled SACD(3)

60

G10640

1064

Hot Rolled SACD
(3)

60

G10650

1065

Hot Rolled SACD(3)

60

G10700

1070

Hot Rolled SACD(3)

55

G10740

1074

Hot Rolled SACD(3)

55

G10780

1078

Hot Rolled SACD
(3)

55

G10800

1080

Hot Rolled SACD(3)

45

G10840

1084

Hot Rolled SACD(3)

45

G10850

1085

Hot Rolled SACD(3)

45

G10860

1086

Hot Rolled SACD
(3)

45

G10900

1090

Hot Rolled SACD(3)

45

G10950

1095

Hot Rolled SACD
(3)

45

1. NCD represents normalized cold drawn. 2. ACD represents annealed cold drawn. 3. SACD represents spheroidized annealed cold drawn.

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SAE J1397 Revised MAY92

TABLE 2—ESTIMATED MECHANICAL PROPERTIES AND MACHINABILITY RATINGS OF RESULFURIZED CARBON STEEL BARS(1)
Estimated Minimum Values Yield Strength MPa Estimated Minimum Values Yield Strength psi Estimated Minimum Values Elongation in 2 in, % Average Machinability Rating (Cold Drawn) 1212=100%

UNS No.

SAE and/or AISI No.

Type of Processing

Tensile Strength MPa

Tensile Strength psi

Reduction in Area %

Brinell Hardness

G11080

1108

Hot Rolled Cold Drawn

340 390 430 480 570 630 610 680 540 610 650 720 670 740 590 650 630 700 380 520 390 540 390 540 390 540

50 000 56 000 62 000 69 000 83 000 92 000 88 000 98 000 79 000 88 000 94 000 105 100 97 000 108 000 85 000 94 000 92 000 102 000 55 000 75 000 56 000 78 000 56 000 78 000 57 000 78 000

190 320 230 400 310 530 330 570 300 510 360 610 370 620 320 550 340 590 230 400 230 410 230 410 230 410

27 500 47 000 34 000 58 000 45 500 77 000 48 000 82 000 43 500 74 000 51 500 88 000 53 000 90 000 47 000 80 000 50 500 86 000 33 000 58 000 33 500 60 000 33 500 60 000 34 000 60 000

30 20 23 15 16 12 15 10 16 12 15 10 15 10 15 12 15 10 25 10 25 10 25 10 22 10

50 40 47 40 40 35 35 30 40 35 35 30 35 30 40 35 35 30 45 35 45 35 45 35 45 35

101 121 121 137 167 183 179 197 156 170 187 212 197 217 170 187 187 207 121 163 121 167 121 167 121 163 160 135 100 95 65 70 80 70 70 70 75 90 80

G11170

1117

Hot Rolled Cold Drawn

G11320

1132

Hot Rolled Cold Drawn

G11370

1137

Hot Rolled Cold Drawn

G11400

1140

Hot Rolled Cold Drawn

G11410

1141

Hot Rolled Cold Drawn

G11440

1144

Hot Rolled Cold Drawn

G11460

1146

Hot Rolled Cold Drawn

G11510

1151

Hot Rolled Cold Drawn

G12110

1211

Hot Rolled Cold Drawn

G12120

1212

Hot Rolled Cold Drawn

G12130

1213

Hot Rolled Cold Drawn

G12144

12L14

Hot Rolled Cold Drawn

1. All 1100 and 1200 series steels are rated on the basis of 0.10% maximum silicon or coarse grain melting practice.

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SAE J1397 Revised MAY92

Copyright SAE International Provided by IHS under license with SAE No reproduction or networking permitted without license from IHS

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TABLE 3—ESTIMATED MECHANICAL PROPERTIES AND MACHINABILITY RATINGS OF NONRESULFURIZED CARBON STEEL BARS, MANGANESE MAXIMUM OVER 1.00%
Estimated Estimated Estimated Minimum Minimum Minimum Average Values Values Values Machinability Tensile Tensile Yield Yield Elongation Reduction Rating Type of Strength Strength Strength Strength in in Brinell (Cold Drawn) Processing MPa psi MPa psi 2 in, % Area % Hardness 1212=100% Hot Rolled Cold Drawn G15270 1527 Hot Rolled Cold Drawn G15360 1536 Hot Rolled Cold Drawn G15410 1541 Hot Rolled Cold Drawn ACD (1) G15480 1548 Hot Rolled Cold Drawn ACD(1) G15520 1552 Hot Rolled ACD(1) 1. ACD represents annealed cold drawn. 510 570 520 570 570 630 630 710 650 660 730 640 740 680 74 000 82 000 75 000 83 000 83 000 92 000 92 000 102 500 94 000 96 000 106 500 93 500 108 000 98 000 280 480 280 480 310 530 350 600 550 370 620 540 410 570 41 000 69 000 41 000 70 000 45 500 77 500 51 000 87 000 80 000 53 000 89 500 78 500 59 500 83 000 20 12 18 12 16 12 15 10 10 14 10 10 12 10 42 35 40 35 40 35 40 30 45 33 28 35 30 40 149 163 149 163 163 187 187 207 184 197 217 192 217 193 50 45 50 45 60 55 65 60

UNS No. G15240

SAE and/or AISI No. 1524

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SAE J1397 Revised MAY92

TABLE 4—MACHINABILITY OF ALLOY STEEL
Range of Typical Hardness HB 179/235 179/235 183/241 183/241 156/207 156/207 167/212 167/212 174/217 174/217 179/229 179/229 170/207 187/229 187/229 187/229 187/229 187/229 187/229 187/235 187/241 187/241 187/229 187/241 187/241 170/212 170/212 174/223 174/223 183/229 170/212 187/229 187/229 187/229 187/229 187/229 174/223 174/223 174/223 174/223 183/235 170/212 170/212 163/201

UNS No. G13300 G13350 G13400 G13450 G40230 G40240 G40270 G40280 G40320 G40370 G40420 G40470 G41180 G41300 G41350 G41370 G41400 G41420 G41450 G41470 G41500 G41610 G43200 G43400 G43406 G44220 G44270 G46150 G46170 G46200 G46260 G47180 G47200 G48150 G48170 G48200 G50401 G50441 G50460 G50461 G50501 G50600 G50601 G51150
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AISI and/or SAE No. 1330 1335 1340 1345 4023 4024 4027 4028 4032 4037 4042 4047 4118 4130 4135 4137 4140 4142 4145 4147 4150 4161 4320 4340 E4340 4422 4427 4615 4617 4620 4626 4718 4720 4815 4817 4820 50B40 50B44 5046 50B46 50B50 5060 50B60 5115

Machinability Rating 55 55 50 45 70 75 70 75 70 70 65 65 60 70 70 70 65 65 60 60 55 50 60 50 50 65 65 65 65 65 70 60 65 50 50 50 65 65 60 60 55 55 55 65

Microstructure Type(1) A A A A C C A A A A A A C A A A A A A A A, B B, A D, B, A B, A B, A C A C C C C C C D, B D, B D, B A A A A A B B C

Condition Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Cold Drawn Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Spheroidized and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Cold Drawn Annealed and Cold Drawn Cold Drawn Cold Drawn Cold Drawn Cold Drawn Cold Drawn Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Cold Drawn

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SAE J1397 Revised MAY92 TABLE 4—MACHINABILITY OF ALLOY STEEL (CONTINUED)
Range of Typical Hardness HB 163/201 174/212 174/212 179/217 179/217 179/229 183/235 183/235 179/217 179/217 183/241 183/241 183/241 179/217 183/241 163/202 179/223 179/235 179/235 179/235 179/235 179/223 179/223 179/229 179/229 184/229 184/229 184/235 184/235 187/248 187/248 179/217 179/235 184/235 179/223 187/241 184/235 184/229 163/202 163/202 170/223

UNS No. G51200 G51300 G51320 G51350 G51400 G51470 G51500 G51550 G51600 G51601 G50986 G51986 G52986 G61180 G61500 G81150 G81451 G86150 G86170 G86200 G86220 G86250 G86270 G86300 G86370 G86400 G86420 G86450 G86451 G86500 G86550 G86600 G87200 G87400 G88220 G92540 G92600 G93106 G94151 G94171 G94301

AISI and/or SAE No. 5120 5130 5132 5135 5140 5147 5150 5155 5160 51B60 50100 51100 52100 6118 6150 8115 81B45 8615 8617 8620 8622 8625 8627 8630 8637 8640 8642 8645 86B45 8650 8655 8660 8720 8740 8822 9254 9260 9310 94B15 94B17 94B30

Machinability Rating 70 70 70 70 65 65 60 55 55 55 40 40 40 60 55 65 65 70 70 65 65 60 60 70 65 65 65 65 65 60 55 55 65 65 55 45 40 50 70 70 70 Cold Drawn

Microstructure Type(1) C A A A A A A, B A, B B B B B B C B, A C A C C C C A A A A A A A A A, B A, B B C A B B B D C C A

Condition Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Cold Drawn Annealed and Cold Drawn Cold Drawn Annealed and Cold Drawn Cold Drawn Cold Drawn Cold Drawn Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Cold Drawn Annealed and Cold Drawn Cold Drawn Spheroidized Annealed and Cold Drawn Spheroidized Annealed and Cold Drawn Annealed and Cold Drawn Cold Drawn Cold Drawn Annealed and Cold Drawn

1. (See section 3) for description of type.

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SAE J1397 Revised MAY92 6. 6.1 Notes Marginal Indicia—The change bar (l) located in the left margin is for the convenience of the user in locating areas where technical revisions have been made to the previous issue of the report. An (R) symbol to the left of the document title indicates a complete revision of the report.

PREPARED BY THE SAE IRON AND STEEL DIVISION 1—CARBON AND ALLOY STEELS

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SAE J1397 Revised MAY92 Rationale—Not applicable. Relationship of SAE Standard to ISO Standard—Not applicable. Application—This SAE Information Report is intended to provide a guide to mechanical properties and machinability characteristics of some SAE steel grades. The ratings and properties shown are provided as general information and not as requirements for specifications unless each instance is approved by the source of supply. Reference Section Metals Handbook, 8th ed., Volume 3, Machining, American Society for Metals, Metals Park, OH 44073. Machining Data Handbook, Volumes 1 and 2. Machinability Data Center, Metcut Research Associates, 3980 Rosslyn Drive, Cincinnati, OH 45209. U.S. Air Force Machinability Report, Vol. 2, 1951, Published by Curtiss-Wright Corp., Wood-Ridge, NJ 07075. Developed by the SAE Iron and Steel Division 1—Carbon and Alloy Steels Sponsored by the SAE Iron and Steel Executive Committee

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