1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 09 26 Revised Updated and renumbered 92/09/17 NB00I10043054200 Released, J. Nelson NAAO, J.P. Lines EAO Printed copies are uncontrolled Page 1 of 3 Copyright 2002, Ford Global Technologies, Inc. STEEL,
2、HIGH STRENGTH, SEAMLESS TUBING WSB-M1A326-A1 1. SCOPE The materials defined by these specifications are fully killed, fine grained, high strength alloyed steels supplied in tubular form. 2. APPLICATION These specifications were released originally for materials used in door intrusion beams where a h
3、igh strength to weight ratio is required. Caution: Due to the hardenability response of these materials, individual welding schedules must be developed for each application. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the C
4、ompanys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION (weight percent) The percentages given are heat or cast (ladle) analysis: Grade 800 1000 L 1000 W 1100 C .14 - .18 .24 - .26 .18 - .21 .20 - .30 Mn 1.60 - 1.80 2.0 - 2.4 1.10 - 1.40 1.50 - 1.80 P .025 m
5、ax .030 max .030 max .025 max S .025 max .030 max .020 max .025 max Si .15 - .30 .060 - .070 - .15 - .25 Cr 1.90 - 2.10 .060 - .080 - 1.90 - 2.10 Mo .45 - .60 .25 - .30 - .45 - .60 Al .020 - .040 .020 - .050 .020 - .050 .020 - .040 Ni - - - .50 - 1.50 ENGINEERING MATERIAL SPECIFICATION WSB-M1A326-A1
6、 Page 2 of 3 Copyright 2002, Ford Global Technologies, Inc. 3.3 MECHANICAL PROPERTIES (ASTM A 370/ISO 6892) Grade 800 1000 L 1000 W 1100 Yield Strength, MPA, min 800 1000 1000 1100 Tensile Strength, MPa, min 1100 1400 1200 1300 Elongation, %, min 10 10 8 6 Note: Tension specimens shall be taken long
7、itudinally and conform to the type shown in ASTM A 370, ISO 6892. 3.4 NONDESTRUCTIVE TESTING Each tube shall pass nondestructive testing to assure wall soundness. Supplier inspection method must be submitted prior to source approval. 3.5 PAINTABILITY Material supplied to this specification must have
8、 prior approval for paintability by the responsible Materials Engineering Activity. This approval shall be based on samples prepared to the local process and resistance requirements appropriate to the country of Ford vehicle manufacture, or to the relevant Engineering Performance specification (see
9、para 4.2). 4. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 INITIAL SUPPLIER APPROVAL For initial approval, the supplier must furnish the following information for each grade: . A plan detailing how each
10、requirement of para 3 will be controlled on a continuing production bases. . Test results from a typical production sample for the requirements outlined in para 3. . Tensile strength, yield strength and elongation histograms including mean and standard deviation values. Data shall consist of a minim
11、um of 40 measurements for each property taken from a minimum of 20 coils while the process is operating in statistical control. . NDT inspection method outlined in para 3.4. . Paintability test results from typical production samples as outlined in para 4.2. ENGINEERING MATERIAL SPECIFICATION WSB-M1
12、A326-A1 Page 3 of 3 Copyright 2002, Ford Global Technologies, Inc. Upon approval, the material will be added to the Engineering Material Approved Source List. 4.2 PAINTABILITY TEST METHODS Material supplied to European Automotive Operations (EAO) shall meet the requirements of WSK-M2P136-A. Material
13、 supplied to North American Automotive Operations (NAAO) shall meet the following requirements: . Material intended for Class 1 surface applications shall meet the requirements of ESB-M2P130. . Material intended for Class 2 and 3 surface applications shall meet the requirements of ESB-M2P129. A Clas
14、s 1 surface shall be specified for parts of the body or front end sheet metal that are exposed after paint or trim. A Class 2 surface shall be specified for parts of the body not covered by trim materials but exposed to view when the car doors or enclosure lids are in an open position. Class 3 metal surface specifications are parts that are wholly or partially concealed during normal use of the vehicle. Parts such as fender aprons, floor pans and unexposed underbody structural members typify parts that would be specified as Class 3.
