1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2013 05 06 N Status No direct replacements, use CBP strategy D. Rhuno, NA 2002 09 26 Revised Updated and renumbered 1994 12 21 C10460355 Released Controlled document at www.MATS Page 1 of 10 Copyright 2013 F
2、ord Global Technologies, Inc. STEEL, SHEET, HOT ROLLED, LOW CARBON WSD-M1A333-A1 STEEL, SHEET, COLD ROLLED, LOW CARBON WSD-M1A333-A2 STEEL, SHEET, COLD ROLLED, LOW CARBON, HIGH WSD-M1A333-A3 FORMABILITY STEEL, SHEET, COLD ROLLED, LOW CARBON, EXTRA WSD-M1A333-A4 HIGH FORMABILITY NOT TO BE USED FOR NE
3、W DESIGN 1. SCOPE The materials defined by these specifications are low carbon steel sheet suitable for cold forming. Specification WSS-M1P94-A shall be used where precoating by the steel supplier is required. 2. APPLICATION These specifications were released originally for automotive body and chass
4、is parts. They also simplify material designation on Engineering Drawings when steels with mechanical properties suitable for designing and forming the part are to be specified and components could be sourced in several countries. The abbreviations heading the tables (see para 4.3) indicate the coun
5、try of origin of the specification as follows: ISO International Standards Organization BS UK of GB Materials Engineering 1 micrometer (+/- 0.5 micrometer) band width; 12.5 mm min effective traverse length; flat skid type) is defined thus: . Class 1 (also known as “B“ (EN 10130) or full finish (FF):
6、 Ra 1.0 - 1.7 (2.5 mm cut-off). Peak density 45 ppcm (Peak Valley Pairs per centimeter) min (at 2.5 mm cut-off). . Class 2 (Also known as “A“ (EN10130) or general purpose (GP): Ra 1.0 - 2.4 (2.5 mm cut-off). Peak Density not defined. . Class 3 Ra and Peak Density not defined. ENGINEERING MATERIAL SP
7、ECIFICATION WSD-M1A333-A1/A4 Page 4 of 10 Copyright 2013, Ford Global Technologies, Inc. 3.7 PAINTABILITY Material supplied to these specifications must have prior approval for paintability by the responsible Materials Engineering activity. This approval shall be based on samples prepared to the loc
8、al process and performance requirements appropriate to the country of vehicle manufacture. Where the material or component is delivered to Ford in the fully painted condition, this para is not applicable and the performance defined by the drawing is mandatory. Where the final product is to be surfac
9、e coated by other methods, e.g. Electroplate, a similar approval procedure applies (see also para 4.10). 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 INITIAL SUPPLIER APPROVAL (UNCOATED ONLY) Fo
10、r initial approval, the supplier should furnish the following information for each variant. . A plan detailing how each requirement of para 3 will be controlled on a continuing production basis. Test results from a typical production sample for the requirements outlined in para 3. Upon approval, the
11、 material will be added to the Engineering Material Approved Source List. 4.2 MATERIAL USAGE For material with specified thickness at or above 3.0 mm, WSD-M1A333-A1 is typically used. For material with thickness over 1.5 mm but below 3.0 mm, WSD-M1A333-A1 or A2 are typically used. or material with t
12、hickness up to 1.5 mm inclusive, WSD-M1A333-A2 is typically used (WSD-M1A333-A3 and/or WSD-M1A333-A4 may be options in certain circumstances. See also the Caution on Page 1). A range of formability grades are available within variants A1 and A2. Variant A3 is a high formability interstitial free gra
13、de. Variant A4 is an extra high formability interstitial free grade. For guidance, a cross reference of specifications is given in para 4.3. ENGINEERING MATERIAL SPECIFICATION WSD-M1A333-A1/A4 Page 5 of 10 Copyright 2013, Ford Global Technologies, Inc. 4.3 CROSS REFERENCE OF SPECIFICATIONS VARIANT C
14、OMMON TERMINOLOGY ISO 3573 BS 1449 SECTIONS 1 8 ASTM DIN 1614 A1 DDQ/Deep Drawing HR4 HR/HS1 - StW24RR A1 DQSK/Deep Drawing HR3 HR/HS2 A622M StW23 A1 DQ/Drawing HR2 HR/HS2 A621M StW22 A1 CQ Forming HR1 HR/HS4 A569M - VARIANT COMMON TERMINOLOGY ISO 3574 BS 1449 SECTIONS 1 9 ASTM EN10130 (CURRENT VERS
15、ION) EN10130 (NEXT VERSION) A2 DDQ/Deep Drawing CR4 CS1/CR1 - FeP05 DC05 A2 DQSK/Deep Drawing CR3 CS2/CR2 A620M FeP04 DC04 A2 DQ/Drawing CR2 CS3/CR3 A619M FeP03 DC03 A2 CQ Forming CR1 CS4/CR4 A366M FeP01 DC01 VARIANT COMMON TERMINOLOGY EN10130 (CURRENT VERSION) EN10130 (NEXT VERSION) A3 Interstitial
16、 Free (IF) FeP06 DC06 A4 Extra High Formability (EHF) ENGINEERING MATERIAL SPECIFICATION WSD-M1A333-A1/A4 Page 6 of 10 Copyright 2013, Ford Global Technologies, Inc. 4.4 CHARACTERISTICS OF HOT ROLLED MATERIALS (WSD-M1A333-A1) Compared with uncoated steel sheet, coated steels have different propertie
17、s from those shown below, which may affect design and manufacturing operations. (Test specimens taken in the transverse (i.e. 90 degrees to the rolling) direction.) Table 1: Guidelines Based on European Practice Grade Yield Strength (Re) (Mpa) (min) Tensile Strength (Rm) (Mpa) (min) % Elongation (A8
18、0) (80 mm GL) (min) HR/HS1 StW24RR 170 290 32 HR/HS2 StW23 170 290 32 HR/HS3 StW22 190 310 26 HR/HS4 220 330 23 Table 2: Guidelines Based on North American Practice Test specimens and method based on ASTM standards. Values for Yield, Tensile Strength and Elongation are based on specimens taken in th
19、e longitudinal direction (0 degrees to rolling). Grade Typical* Yield Strength (MPa) Typical* Tensile Strength (MPa) Typical % Elongation (50 mm GL) CQ 265 360 37 DQSK 235 345 43 DDQ 220 330 44 *Typical values shown are examples only. For specific product values, contact the steel supplier. ENGINEER
20、ING MATERIAL SPECIFICATION WSD-M1A333-A1/A4 Page 7 of 10 Copyright 2013, Ford Global Technologies, Inc. 4.5 CHARACTERISTICS OF COLD ROLLED MATERIALS (WSD-M1A333-A2) Compared with uncoated steel sheet, coated steels have different properties from those shown below, which may affect design and manufac
21、turing operations. Table 3: Guidelines Based on European Practice Grade Yield Strength (Re) (Mpa) Tensile Strength (Rm) (Mpa) % Elongation (A80) (80 mm GL) (min) r90 (min) n90 (min) 1) 4) 4) 2) 4) 3) 3) FeP01/DC01 140 - 270 270 - 410 28 - - FeP03/DC03 140 - 230 270 - 370 34 1.3 - FeP04/DC04 140 - 21
22、0 270 - 350 38 1.8 0.18 FeP05/DC05 140 - 180 270 - 330 40 2.0 0.20 Notes: 1) The values of yield stress are the 0.2 % proof stress for products which do not present a definite yield point and the lower yield stress (Rel) for others. For thin gauges, the yield stress value tends to increase. Up to 20
23、 MPa is typical for 0.5 mm. Up to 40 MPa is typical for 0.5 mm. 3) The values of r90 and n90 only apply to products of thickness 0.5 mm. 4) Test specimens taken in the transverse (i.e., 90 deg to the rolling) direction. Table 4: Guidelines Based on North American Practice Test specimens and method b
24、ased on ASTM standards. Values for Yield, Tensile Strength and Elongation are based on specimens taken in the longitudinal direction (0 degrees to rolling). Grade Yield Strength (MPa) Tensile Strength (MPa) (min) % Elongation (50 mm GL) r-bar n-bar (min) (min) (min) CQ Not designed to meet specific
25、mechanical property requirements. DQSK 140 - 250 270 32 - 0.15 DDQ 140 - 220 270 36 1.4 0.19 ENGINEERING MATERIAL SPECIFICATION WSD-M1A333-A1/A4 Page 8 of 10 Copyright 2013, Ford Global Technologies, Inc. 4.6 CHARACTERISTICS OF COLD ROLLED MATERIAL (WSD-M1A333-A3) Compared with uncoated steel sheet,
26、 coated steels have different properties from those shown below, which may affect design and manufacturing operations. Table 5: Guidelines Based on European Practice Grade Yield Strength (Re) (Mpa) Tensile Strength (Rm) (Mpa) % Elongation (A80) (80 mm GL) (min) r90 (min) n90 (min) 1) 4) 4) 2) 4) 3)
27、3) FeP06/DC06 120 - 165 270 - 350 42 2.1 0.21 Notes: 1) The values of yield stress are the 0.2 % proof stress for products which do not present a definite yield point and the lower yield stress (Rel) for others. For thin gauges, the yield stress value tends to increase. Up to 20 MPa is typical for 0
28、.5 mm. Up to 40 MPa is typical for 0.5 mm. 3) The values of r90 and n90 only apply to products of thickness 0.5 mm. 4) Test specimens taken in the transverse (i.e., 90 deg to the rolling) direction. Table 6: Guidelines Based on North American Practice Test specimens and method based on ASTM standard
29、s. Values for Yield, Tensile Strength and Elongation are based on specimens taken in the longitudinal direction (0 degrees to rolling). Grade Yield Strength (Mpa) Tensile Strength (Mpa) (min) % Elongation (50 mm GL) (min) r-bar (min) n-bar (min) IF 120 - 180 270 40 1.5 0.20 ENGINEERING MATERIAL SPEC
30、IFICATION WSD-M1A333-A1/A4 Page 9 of 10 Copyright 2013, Ford Global Technologies, Inc. 4.7 CHARACTERISTICS OF COLD ROLLED MATERIAL (WSD-M1A333-A4) Test specimens and method based on ASTM standards. Values for Yield, Tensile Strength and Elongation are based on specimens taken in the longitudinal dir
31、ection (0 degrees to rolling). Table 7: Guidelines Based on North American Practice Test specimens and method based on ASTM standards. Values for Yield, Tensile Strength and Elongation are based on specimens taken in the longitudinal direction (0 degrees to rolling). Grade Yield Strength (Mpa) Tensi
32、le Strength (Mpa) (min) % Elongation (50 mm GL) (min) r-bar (min) n-bar (min) EHF 80 - 140 270 37 1.5 0.23 4.8 REFERENCE DOCUMENTS The reference documents are: ASTM A366M BS 1449 ASTM E 8M ISO 3573 WSS-M1P94-A ASTM A568M (Sec. 1 8 EN 10002 ISO 3574 WSS-M99P9999-A1 ASTM A569M also the coating(s) defi
33、ned by WSS-M1P94-A. e.g. Steel, Sheet, Hot Rolled, Low Carbon, uncoated, for a non- visible bracket of 4 mm thickness, would be specified thus: . Steel to WSD-M1A333-A1: Class 3 e.g. Steel, Sheet, Hot Rolled or Cold Rolled, Low Carbon, uncoated, for a non-visible bracket of 2 mm thickness, would be
34、specified thus: . Steel to WSD-M1A333-A1/A2: Class 3 e.g. Steel, Sheet, Cold Rolled, Low Carbon, High Formability (design minimum yield strength 120 MPa), uncoated, for a visible exterior body panel, would be defined thus: . Steel to WSD-M1A333-A3: Class 1 e.g. Steel, Sheet, Rolled, Low Carbon, coat
35、ed with double sided Electrolytic Zinc, (typical European usage), for the boot (trunk) inner panel, would be specified thus: ENGINEERING MATERIAL SPECIFICATION WSD-M1A333-A1/A4 Page 10 of 10 Copyright 2013, Ford Global Technologies, Inc. . Steel to WSD-M1A333-A2, coated to WSS-M1P94-A: 50G50G-EL, Cl
36、ass 2 4.10 PAINTABILITY Material supplied to North America shall meet the following requirements. . Material intended for Class 1 surface applications shall meet the requirements of ESB-M2P130-A. . Material intended for Class 2 and 3 surface applications shall meet the requirements of ESB-M2P129-B.
37、4.11 THICKNESS TOLERANCE (CAUTION) If and when choosing a minimum gage from ES-YC15-1N260-AA, if the previous choice of gage was nominal, it is important to avoid generating an inadvertent increase in the ACTUAL thickness of the component, and consideration should be given to specifying the next lowest minimum gage e.g. (Ford Europe example) for an existing 0.80 mm nominal gage, the nearest equivalent minimum gage in ES-YC15-1N260-AA is 0.75 mm.
