1、INTERNATIONAL TRUCK AND ENGINE CORPORATION CEMS (CORPORATE ENGINEERING MATERIAL SPECIFICATION) NUMBER: CEMS A-2 TITLE: Cold Finished Steel Bars Materials Engineering Materials Engineering WHTTENREVIE WED BY: PPROVED Bi? 1.0 SCOPE 1.1 This specification covers requirements for general applications of
2、 carbon and alloy cold fiiished steel bars. Whenever applicable the specification should be used in conjunction with A-O, Part II, International System of Steel Classification. Unless otherwise specified, the appropriate ASME Steel Products Manuals shall apply to this specification. CURRENT ISSUE DA
3、TE: October 2001 July 1999 SUPERSEDES ISSUE OF: 1.2 Requirements for cold finished steel bars not included in this specification are in the following Corporate Engineering Materials Specifications: Steel for Ball Bearing Race Rings Steel for Roller Bearings Wrought Corrosion and Heat Resisting Steel
4、 CEMS A-33 CEMS A-35 CEMS A-37 2.0 INTRODUCTION Cold finished bars are free from scale, have closer dimensional tolerances, better machinability, and offer improved mechanical properties. The are also more expensive than hot rolled bar products. 3.0 CONTENTS REFERENCE DOCUMENTS GENERAL REQUIREMENTS
5、QUALITY METHODS OF TEST PAGE 2 2 5 5 DESIGNATION ON DRAWINGS AND PURCHASE ORDERS 6 PACKING AND SHIPPING 6 APPENDIX - GENERAL INFORMATION Green Sheets This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without permission from Corporate Tec
6、hnical Standards. Suppliers are required to assume all patent liability. 0200 1 by International Truck and Engine Corporation. OCTOBER 200 1 Page 1 of 6 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted
7、 without license from IHS-,-,-NUMBER: CEMS A-2 4.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following standards, specifications and regulations are referenced in this specification. TITLE CURRENT ISSUE DATE: Cold Finished Steel Bar
8、s October 2001 Quality System Standard QS-9000 (IS0 9001) INTERNATIONAL IQR Quality Standard INTERNATIONAL Manufacturing Standard D-13 ASTM A 370 INTERNATIONAL CEMS A-O, Part I INTERNATIONAL CEMS A-O, Part II ASTM A29 CFR Title 29, Part 1910 INTERNATIONAL CEMS A-43 5.0 CLASSIFICATION OR DESIGNATION
9、Cold finished bars are classified by chemistry and identified by SAE/ASTM steel grade designation. 6.0 GENERAL REQUIREMENTS Material supplied shall meet the applicable requirements of ASTM A29. 6.1 Chemical Composition Bars purchased to this specification shall conform to the required analysis for t
10、he appropriate steel in CEMS A-O, Part I, Chemical Composition of International Standard Steels. Steels with an “SR”, “SS” or “SSA” suffix shall have the same chemical composition as those without a suffix. 4145 SS and 4145 SSA shall meet the chemical composition requirements for SAE 4145, except th
11、e carbon content shall be 0.40-0.50 percent with lead, tin, or tellurium additions permissible. International “50” and International “50” SR high strength-low alloy steel shall conform to the required analysis for Type 50 steel per CEMS A-43, High Strength - Low Alloy Steels. 6.1.1 The most readily
12、available cold drawn steels are 1018 and 1045. Effort should be made to standardize on these grades. 6.2 Mechanical Properties Mechanical properties for as cold drawn bars are not guaranteed, nor are those for turned and polished or turned, ground, and polished bars which have properties of hot roll
13、ed bars. See “Appendix - General Information.” Required tensile properties for cold drawn, stress relieved steel bars are shown in Table I. See “Methods of Test,” page 5, and “Appendix - General Information.” This document is restricted and may not be sent outside International Truck and Engine Corp
14、oration or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 0200 1 by International Truck and Engine Corporation. OCTOBER 200 1 Page 2 of 6 Copyright International Truck and Engine Corporation Provided by IHS under license with
15、INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS A-2 TABLE I MECHANICAL PROPERTY REQUIREMENTS - COLD DRAWN, STRESS RELIEVED STEEL BARS (Special Cold Drawn, High Tensile) TITLE CURRENT ISSUE DATE: Cold Finished Steel Bars October 2001 Size. incl I
16、International Code CEMS A-O, Part II 2-42 1 Rounds, Squares yield elongation strength, 2 in (50.8 mm) psi MPa percent, min 90 O00 62 1 10 100 O00 689 10 90 O00 62 1 11 100 O00 689 11 I I 1040 SR inches I I Steel mm Designation 1144 SS * I 125000 I 862 I 4145 SS * lo() 4145 SSA * 1.000 to 2.500 I 25.
17、40 to 63.50 I International “50“ SR I 165 O00 I 1138 1137 SR 9w - 2.001 to 2.500 50.82 to 63.50 no code I I 4145 SS* 80 000“ I 552() I 1 8(l) no code 2-422 2.501 to 3.000 63.52 to 76.20 90 O00 62 1 11 100 O00 689 10 100 O00 689 11 4145 SS* 1141 SR 76.22 to 101.60 3.001 to 4.000 I 125000 I 862 lo() n
18、o code 130000 I 896 10“ 65000 I 1138 9w no code 90000 I 62 1 10 I 1045 SR 2-422 100 O00 689 10 100 O00 689 10 100 O00 689 10 no code * * If cold drawn, stress relieved steel bars are ordered in 40 O00 lb (18 Mg) minimum quantities, the yield strength shall be held to a maximum of 20 O00 psi (13 8 MP
19、a) over the specified minimum yield strength. Special Steels. Additional minimum requirements. 130000 I 896 10“ 165 000 I 1138 9() no code 130 O00 896 10“ 165 O00 1138 9w 90 000 62 1 9 In event of disagreement between hardness and tensile strength, the tensile strength shall govern, Typical value; n
20、ot a requirement. () 2-422 This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 0200 1 by International Truck and Engine Corporati
21、on. . . 90 O00 62 1 9 90 O00 62 1 9 OCTOBER 200 1 Page 3 of 6 Steel 1144 SS Tensile Strength Hardness RC 140 000 965 30 psi MPa 4145 SS 4145 SSA 150 O00 1034 32 180 O00 1241 38 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction
22、 or networking permitted without license from IHS-,-,-NUMBER: CEMS A-2 6.3 Dimensional Tolerances Material purchased to this specification shall conform to the dimensional tolerances in the appropriate ASME Steel Products Manuals. The diameter tolerances for round bars shown in Table II below and Ta
23、ble IV, page 4, are extracted for convenience. Tolerances for 1144 SS, 4145 SS, and 4145 SSA cold drawn round bars shall be as shown in Table III. See “Appendix - General Information” for square, hexagon, and flat bar tolerances. TITLE CURRENT ISSUE DATE: Cold Finished Steel Bars October 2001 COLD D
24、RAWN AN Heat Treatments and Bar Diameter to 1.500 1.501 to 2.500 2.501 to 4.000 Applicable Heat Treatments 0.002 0.003 0.005 0.003 0.004 0.006 0.004 0.005 0.007 Bar Diameter, inches, incl 4.001 to 6.000 6.001 to 8.000 8.001 to 9.000 9.001 and over to 38.10 38.12 to 63.50 63.52 to 101.60 101.62 to 15
25、2.40 152.42 to 203.20 203.22 to 228.60 228.62 and over Bar Diameter, 111111 incl 0.005 0.006 0.008 0.007 0.008 0.008 0.006 0.007 0.009 0.008 0.009 0.009 0.007 0.008 0.010 0.009 0.010 0.010 0.008 0.009 0.01 1 0.010 0.01 1 0.01 1 0.05 0.08 O. 13 o. 10 O. 13 0.13 0.08 0.10 0.15 O. 13 0.15 0.15 o. 10 0.
26、13 0.18 0.5 0.18 0.18 0.13 0.15 0.20 0.18 0.20 0.20 0.15 0.18 0.23 0.20 0.23 0.23 0.18 0.20 0.25 0.23 0.25 0.25 0.20 0.23 0.28 0.25 0.28 0.28 Cold Drawn or Turned and Polished, mm Turned and Polished Only, inch before cold finishing Bar Diameter, incl inches mm 0.250 to 0.4374 0.4375 to 1.500 6.35 t
27、o 11.10 11.11 to 38.10 after cold finishing 1144 SS inch mm inch mm 0.004 o. 10 0.005 O. 13 0.005 0.13 4145 SS TURNED, GROUND, AND POLISHED, DIAMETER TOLERANCES, MINUS * For alloy grades, applies only to quench and tempered, normalized and tempered or any similar double treatment prior to turning. T
28、ITLE CURRENT ISSUE DATE: Cold Finished Steel Bars October 2001 7.0 QUALITY Material purchased to this specification shall be manufactured from special quality hot rolled bars, unless otherwise specified. The bars shall be commercially free from injurious defects and shall have a smooth bright surfac
29、e consistent with the method of cold finishing. 8.0 METHODS OF TEST Perform the tensile test according to ASTM A 370. 9.0 SOURCE APPROVAL AND QUALITY CONTROL 9.1 Supplier Requirements Suppliers must conform to the requirements of the International IQR Quality Standard which includes conformance to t
30、he QS-9000 (IS0 9001) Quality System Standard. A mutually acceptable Quality Control Plan as described therein is required for source approval to the requirements of this specification. 9.2 Approval Parts supplied against contracts or purchase orders citing this specification shall be equivalent in
31、all respects to those samples which were approved by the purchaser. No changes in formulation or processing practices are permitted without approval. In the event that changes in material, properties, processing practices, construction, color, or labeling of the product are required, the supplier sh
32、all notify Materials Engineering at TDTC and Purchasing and Supplier Development of the proposed change(s). Test data indicating conformance to all requirements of this specification, test samples, and new or amended or updated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, P
33、art 1910 shall be submitted with the request for change. This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 0200 1 by Internatio
34、nal Truck and Engine Corporation. OCTOBER 200 1 Page 5 of 6 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NUMBER: CEMS A-2 9.3 Process Control The supplier shall either
35、perform and report results of tests on specific lots of parts produced or provide statistical evidence of the lot having been produced in a state of statistical control and with a process capable of providing all required properties. The part supplier and the plant metallurgist and/or the quality co
36、ntrol manager of the using International plant may determine testing and reporting requirements on specific products. TITLE CURRENT ISSUE DATE: Cold Finished Steel Bars October 2001 10.0 DESIGNATIONS ON DRAWINGS AND PURCHASE ORDERS 10.1 Drawings In specifying cold finished steels on engineering draw
37、ings, it is desirable to allow as many options as possible at the manufacturing level and still insure proper engineering performance. A system of coding steels to accomplish these objectives was established and is covered in CEMS A-O, Part II, International system of Steel Classification. It is rec
38、ommended that this coding system be used whenever possible. See “Choice of Tables” in A-O, Part II. for critical parts where the freedom of a code cannot be permitted, a specific steel grade should be used. Ordinarily, no reference to A-2 is made on the drawing except for steels with special propert
39、ies. Examples of drawing specifications for cold finished steels are as follows: 2-421, CEMS A-O, Pt II 2-400, CEMS A-O, Pt II 1045 SR, CEMS A-2 1144 SS, CEMS A-2 10.2 Purchase Orders Material designation on purchase orders should consist of one of the appropriate grades and any special requirements
40、 necessary for proper fabrication of the part. see “Appendix - General Information.” Examples: 1144 SR, CEMS A-2 11 17 CD, CEMS A-2 1137 CD, GON, SQUARE AND FLAT BAR SIZE TOLERANCES, INCH, MINUS Carbon Steel Maximur 0.28 I under to 0.55 I y; no heat treatment or anneal, spheroidize anneal, normalize
41、 and I 0.29 none ofCarbonRan e Peru over I 0.55 to 0.55 no heat treatment or anneal, spheroidize anneal, normalize stress relieve or anne al t, Incl all carbon ranges quench and temper or normalize and temper none Hexagons to 0.750 0.002 0.003 0.006 0.004 0.006 0.006 0.751 to 1.500 0.003 0.004 0.007
42、 0.005 0.007 0.007 1.501 to 2.500 0.004 0.005 0.008 0.006 0.008 0.008 2.501 to 3.125 0.005 0.006 0.009 0.007 0.009 0.009 Squares to 0.750 0.002 0.004 0.007 0.005 0.007 0.007 0.751 to 1.500 0.003 0.005 0.008 0.006 0.008 0.008 1.501 to 2.500 0.004 0.006 0.009 0.007 0.009 0.009 2.501 to 4.000 I 0.006 I
43、 0.008 I 0.011 I 0.009 I 0.011 I 0.011 Flats to 0.750 0.003 0.004 0.008 0.006 0.008 0.008 0.750 to 1.500 0.004 0.005 0.010 0.008 0.010 0.010 1.501 to 3.000 0.005 0.006 0.012 0.010 0.012 0.012 3 .O0 1 to 4.000 I 0.006 I 0.008 I 0.016 I 0.011 I 0.016 I 0.016 4.001 to 6.000 I 0.008 I 0.010 I 0.020 I 0.
44、012 I 0.020 I 0.020 6.001 andover I 0.013 I 0.015 I * * () For sizes larger than those shown, the producer should be consulted regarding size tolerances. The size of a hexagon or square bar is the distance between opposite sides. Width governs the tolerances for both width and thickness of flats. Al
45、loy Steel For alloy bar tolerances, increase the carbon bar tolerances of similar size, carbon range and he at treatment 0.001 inch by This document is restricted and may not be sent outside International Truck and Engine Corporation or reproduced without permission from Corporate Technical Standard
46、s. Suppliers are required to assume all patent liability. 0200 1 by International Truck and Engine Corporation. OCTOBER 200 1 Page 6 of 7 Copyright International Truck and Engine Corporation Provided by IHS under license with INTERNNot for ResaleNo reproduction or networking permitted without licens
47、e from IHS-,-,-NUMBER: TITLE: CURRENT ISSUE DATE: CEMS A-2, APPX Cold Finished Steel Bars October 2001 TABLE IIIA COLD DRAWN HEXAGON, SQUARE AND FLAT BAR SIZE TOLERANCES, mm, Minus Carbon Steel Heat Treatments and Bar Sizes“ Maximu Applicable Heat Treatments Bar Sizes* incl Bar Width (), incl no hea
48、t treatment before cold finishing anneal, spheroidize after cold finishing none Hexamns of Carbon jange, Perc over I 0.55 to 0.55 no heat treatment or anneal, spheroidize anneal, normalize stress relieve or anne al it, Incl all carbon ranges quench and temper or normalize and temper none to 20.0 0.0
49、5 0.08 0.15 o. 10 0.15 0.15 20.0 to 40.0 incl 0.08 0.10 0.18 O. 13 0.18 0.18 40.0 to 60.0 incl 0.10 0.13 0.20 0.15 0.20 0.20 60.0 to 80.0 incl 0.13 0.15 0.23 0.18 0.23 0.23 to 20.0 0.05 0.10 0.18 O. 13 0.18 0.18 20.0 to 40.0 incl 0.08 0.13 0.20 0.15 0.20 0.20 40.0 to 60.0 incl 0.10 0.15 0.23 0.18 0.23 0.23 60.0 to 100.0 incl 0.15 0.20 0.28 0.23 0.28 0.28 to. 20.0 0.08 0.10 0.20 0.15 0.20 0.20 20.0 to 40.0 incl 0.10 0.13 0.25 0.20 0.25 0.25 40.0 to 80.0 incl
