1、This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015by Navistar, Inc. JUNE 2015 Page 1 of 12 NAVISTAR, INC. Material, Parts, and Process Specifications (
2、MPAPS) NUMBER: MPAPS- A-44 Former Designation: CEMS A-44 TITLE: Heat Treated Constructional Steels CURRENT REV No.: 1506 DATE: June 2015 WRITTEN/EDITED BY: W. Cook APPROVED BY: R. Goluch SUPERSEDES: June 2012 PRINTED COPIES OF THIS DOCUMENT MUST BE VERIFIED FOR CURRENT REVISION This specification ma
3、y involve hazardous materials, equipment, and procedures. This specification does not purport to address all of the safety issues associated with its use. The user is responsible to consult appropriate safety and health practices and to determine the applicability of regulatory limits prior to use.
4、Change Notice: Reformatted as MPAPS. Editorial Changes 1.0 APPLICATION Constructional steels are supplied in the heat treated condition. They have limited formability, but possess high strength and good wear resistance in the as-received condition. They are suitable for use in many applications wher
5、e their limited formability is acceptable. AR grades are intended for applications where a good combination of abrasion resistance, formability, and weldability is required 2.0 SCOPE This specification covers the Companys requirements for high strength, heat-treated steel used for constructional or
6、wear resistant applications. These steels are normally supplied in the quenched and tempered condition. Abrasion resistant (AR) steel grades are supplied as through-hardened plate which has been austenitized, water quenched, and tempered. 2.1 Restricted Chemical Substances Effective January 1, 2007,
7、 all product supplied to the requirements of this specification must comply with the requirements of the MPAPS B-50 specification. 3.0 REFERENCE DOCUMENTS Unless otherwise specified, the latest issue of all referenced standards shall apply. The following standards, specifications and regulations are
8、 referenced in this specification. Quality System Standard ISO 9001 or TS-16949 CFR Title 29, Part 1910 NAVISTAR Manufacturing Std. MS-D-13 NAVISTAR Engineering Design Std A-16 NAVISTAR MPAPS B-50 ASTM A 514 ASTM A 370 4.0 GENERAL REQUIREMENTS 4.1 Classification Constructional steels are classified
9、by their yield strength, hardness, and chemical composition 4.2 Chemical Composition The chemical composition of the material furnished to this specification will fall within the limits shown in Table I (a) or (b). The choice of, and limits for, alloys other than those specified below which are NUMB
10、ER: MPAPS A-44 TITLE: Heat Treated Constructional Steels CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar,
11、Inc. JUNE 2015 Page 2 of 12 necessary to produce the required mechanical properties, will be subject to agreement between the supplier and purchaser. The type of alloy combination will not be changed by the producer without the knowledge and consent of the purchaser. Acknowledgement of an order by t
12、rade name does not void the chemical requirements herein. However, such acknowledgement does constitute agreement on the alloys to be used and must be approved by the Plant Quality Control Manager involved. TABLE I (a) CHEMICAL COMPOSITION (%max unless otherwise specified) Steel Type Carbon Alloy NA
13、VISTAR Type Approx ASTM A514 Equivalent 80 90 100C* All Grades 321WRC* 100 321WR 363WR Chemical Composition Carbon Manganese Phosphorus Sulfur Silicon 0.20 1.35 0.04 0.05 0.40 0.20 1.50 0.04 0.05 0.40 0.28 1.50 0.04 0.05 0.60 0.21 1.50 0.04 0.05 0.90 Boron * 0.0005 0.003 Optional Others * Alloys Opt
14、ional Description Fully Killed Steel Made to Fine Grain Practice When* * When Type 100C or 321WRC are specified on a drawing, it is permissible for manufacturing to use Type 100 for Type 100C or Type 321WRC to allow for maximum freedom of selection at at the manufacturing level. *Boron not required
15、for Type 80 in thicknesses 19 mm (0.75 inch) and under. *Alloys may be used at the producers option with or in place of boron. TABLE I (b) CHEMICAL COMPOSITION AR Steel Grades (%max unless otherwise specified) Abrasion Resistant Steel Type C Mn P S Si Ni Cr Mo Boron AR400F 0.18 1.60 0.025 0.01 0.50
16、0.30 0.30 0.25 0.0005 min AR500 0.29 1.60 0.025 0.01 0.70 0.50 1.00 0.60 0.004 max 4.3 Mechanical Properties The mechanical properties of steel purchased to this specification will conform to the requirements shown in Table II. See “Methods of Test,” Section 8. These properties and nil ductility tra
17、nsition temperature (NDTT) can be affected by welding. NDTT is also affected by increased hardness and thickness. See “Appendix General Information” section for details. NUMBER: MPAPS A-44 TITLE: Heat Treated Constructional Steels CURRENT ISSUE DATE: June 2015 This document is restricted and may not
18、 be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 3 of 12 TABLE II MECHANICAL PROPERTIES Navistar Type Thickness Yield Strength, min Tensile Strength Min %
19、Elongation in 2 inches (50 mm) Brinell Hardness (HBW) 180 Bend Test * inches (incl) mm (incl) ksi MPa ksi MPa 80 To 1.000 To 25.4 80 552 95 to 115 655 to 792 18 197 to 235* D = 2T 1.001 - 1.500 25.5 - 38.0 D = 3T 90 To 1.000 To 25.4 90 621 100 to 120 689 to 827 18 212 to 248* D = 2T 1.001 - 1.500 25
20、.5 - 38.0 D = 3T 100C To 1.000 To 25.4 100 689 110 to 130 758 to 896 18 229 to 269* D = 2T 1.001 - 1.250 25.5 - 31.5 D = 3T 100 To 1.000 To 25.4 90 689 115 to 135 792 to 931 18* 235 to 277* D = 2T 1.001 - 2.500 25.5 - 63.5 D = 3T 2.501 - 4.000 63.6 - 101.6 621 105 to 135 724 to 931 17 217 to 277* D
21、= 4T 321WR 321WRC 363WR To 1.500 To 1.250 To 1.500 To 38.0 To 31.8 To 38.0 137* 137* 145* 945* 945* 1000* 171 * 171 * 184 * 1179* 1179* 1269* 14* 14* 13* 321 to 363 321 to 363 363 min - - - AR400F 0.188 - 1.50 4.8-38.1 150* 1030* 184* 1270* 23* 360-444 - AR500 0.236-2.5 6.0-63.5 200* 1378* 225* 1551
22、* 12* 477-550 - * Typical value; not a requirement. * This is an acceptance test per ASTM A370 where D = the inside diameter of bend and T= thickness. The ratios shown in Table II apply to the bending performance of a test specimen only. This specimen is always taken parallel to the rolling directio
23、n with the bend axis perpendicular to the rolling direction and usually has some edge preparation. Where plates are to be bent in a fabricating operation, more liberal bend radii must be used, particularly if the bend axis is parallel to the direction of grain flow. For recommended fabricating bend
24、radii, see “Appendix General Information.” * Elongation for plates under 6.4 mm (0.250 inch) thick is 15% min and 10% min for sheet and strip. Type 321 WRC, 321WR, and 363WR are furnished to minimum hardness and all other published mechanical properties are waived. 288 HBW max permitted for bar prod
25、ucts for Types 321WR and 321WRC. 965 MPa (140 ksi) max tensile strength permitted for structural shapes. 5.0 QUALITY All product supplied shall be clean and free from dirt, oils, sharp edges, or defects harmful to product performance. NUMBER: MPAPS A-44 TITLE: Heat Treated Constructional Steels CURR
26、ENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 4 of 12 5.1 METHODS OF TEST For tensile,
27、bending, and hardness tests, refer to ASTM A370. Machined surfaces of tensile test specimens will have a roughness no greater than 1.5 x106m (6.3 x 10-6 inches) which is normally produced by finish milling. 6.0 QUALIFICATION Engineering qualification of sources is required in advance of production s
28、hipments. Samples shall be accompanied by test data certifying that all requirements of the specification have been met. 6.1 Quality Control Plan A Quality Control Plan for products supplied to the requirements of this specification will be established by mutual agreement between NAVISTAR and the su
29、pplier. Unless specific exception is noted, the following characteristics, where applicable*, shall be included in the plan as features for management by statistical process control.* * Other characteristics for inclusion in the control plan may be specified on the engineering drawing and/or purchas
30、e order. * See NAVISTAR Engineering Design Standard A-16 7.0 SOURCE APPROVAL AND QUALITY CONTROL 7.1 Supplier Requirements All suppliers to NAVISTAR are required to be registered to ISO 9001 Quality System Requirements. NAVISTAR will also accept TS-16949 registration as long as the supplier can also
31、 fulfill all AIAG PPAP (Production Part Approval Process) documentation and approval requirements. Suppliers must maintain their certification with an accredited registrar and must furnish copies of registration certificates to their Corporate Buyer upon request. 7.2 Approval Parts supplied against
32、contracts or purchase orders citing this specification shall be equivalent in 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,
33、 construction, color, or labeling of the product are required, the supplier shall notify NAVISTAR Materials Engineering 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 u
34、pdated Material Safety Data Sheet(s) (MSDS), in accordance with CFR Title 29, Part 1910 shall be submitted with the request for change. 7.3 Process Control The supplier shall either perform and report results of tests on specific lots of parts produced using ISO 9001 or TS-16949 guidelines, or provi
35、de 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 quality control manager of the using NAVISTAR plant may determine testing and reporting requirements on specific produc
36、ts. Thickness NUMBER: MPAPS A-44 TITLE: Heat Treated Constructional Steels CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability.
37、2015 by Navistar, Inc. JUNE 2015 Page 5 of 12 8.0 SHIPPING AND HANDLING Shipping and identification shall be in accordance with NAVISTAR Manufacturing Standard MS-D-13. Parts shall be packaged so as to avoid any damage in shipment detrimental to the appearance of the part. 9.0 DESIGNATION ON DRAWING
38、S Material designation on drawings and purchase orders will consist of the type and any special requirements necessary for proper fabrication of the part. Examples: Steel, Type 100C, MPAPS A-44 Steel, Type 321WRC, MPAPS A-44 Steel, Type AR400F, MPAPS A-44 10.0 TECHNICAL INFORMATION For further infor
39、mation related to the technical content of this specification, contact: Suppliers may purchase controlled copies of this specification by contacting: Materials Engineering and Technology Dept. 10400 W. North Avenue Melrose Park, IL 60160 E-mail: MaterialsEngineeringN IHS Global Inc. 15 Inverness Way
40、 East Englewood CO 80112-5776 Phone: 1-800-854-7179 E-mail: AutomotiveIHS.com Website: http:/ NUMBER: MPAPS A-44 TITLE: Heat Treated Constructional Steels CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corpor
41、ate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, Inc. JUNE 2015 Page 6 of 12 A.0 GENERAL INFORMATION (Not a Requirement) A.1 INTRODUCTION A.1.1 Heat-treated constructional steels are low carbon steels which may contain small amounts of several alloyin
42、g elements. These steels have high strength, good toughness and weldability. The mechanical properties are obtained by austenitizing, water quenching and tempering to the desired strength and hardness. A.2 APPLICATIONS Types 80, 90, 100C and 100 These grades are used for high strength applications w
43、here mechanical properties of unheat-treated carbon steels and high strength-low alloy steels are not adequate. These grades also have better abrasion resistance and lower transition temperatures than the above mentioned steels. They are normally produced as plate; however, Type 100 is available in
44、bar, structural shapes and sheet. Types 80, 90, and 100C may be available in bar shapes when ordered in mill quantities. Type 100 is an alloy grade used in limited quantities by several Navistar plants. Types 80, 90 and 100C are carbon steel grades and significant cost savings may be realized by the
45、ir use. Types 321WRC, 321WR and 363 WR These grades are used primarily for wear resistant applications such as in wear bars, dump truck body liners or other applications requiring abrasion resistance. They are characterized by high hardness, high strength and good weldability when proper care is exe
46、rcised. These steels do not form readily. Types 321WRC and 321WR are recommended for wear resisting applications where slight forming is required. Type 363WR is not recommended for forming. Type 321WRC is a carbon steel grade and significant cost savings may be realized by its use. This grade requir
47、es mill quantities. Types AR400F and AR500 These grades are through-hardened, abrasion resistant plate, intende intended for applications where a good combination of abrasion resistance and weldability is desired. AR500 is not considered formable, but forming can be done with an inside bend radius o
48、f 10T minimum when the bend axis is transverse to rolling direction. NUMBER: MPAPS A-44 TITLE: Heat Treated Constructional Steels CURRENT ISSUE DATE: June 2015 This document is restricted and may not be sent outside Navistar, Inc. or reproduced without permission from Corporate Technical Standards. Suppliers are required to assume all patent liability. 2015 by Navistar, In
