1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions Rev 03 2014 12 01 Inactive Replaced by Industry Standards G. Weber, NA 2002 07 19 Revised Updated and renumbered 1963 06 05 Released AS1 # 915 Page 1 of 5 Copyright 2014, Ford Global Technologies, Inc. STEEL
2、, RUSTLESS, DECORATIVE AND FINISHED ESB-M1A67-A PRODUCTS NOT TO BE USED FOR NEW DESIGN 1. SCOPE The materials defined by this specification are austenitic chromium stainless steels (AISI Types 201 and 211) having good corrosion resistance, sufficient drawing or forming properties to make the part an
3、d when given an appropriate finish, shall retain such finish under service conditions. 2. APPLICATION This specification was released originally for the manufacture of decorative trim mouldings, hub caps and wheel covers. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material su
4、ppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MATERIAL 3.2.1 Annealed or Tempered Material 3.2.1.1 Chemical Composition Carbon 0.15 max Manganese 5.5 - 7.5 Silicon 1.0% max Phosphorus 0.060 max Sulfur 0.030 max Chromium 1
5、6.00 - 20.00 Nickel 3.50 - 6.00 Nitrogen 0.25 max ENGINEERING MATERIAL SPECIFICATION ESB-M1A67-A Page 2 of 5 Copyright 2014, Ford Global Technologies, Inc. 3.2.1.2 Mechanical Properties (ASTM E 8) Yield Strength, max 85,000 psi (586 MPa) Elongation, min 35 % This material is intended for roll-formin
6、g over specially designed dies (for AISI Type 201), and has the potential of being formed and used at reduced gauge. 3.2.2 Low Yield Material 3.2.2.1 Chemical Composition Carbon 0.04 - 0.12 Manganese 5.5 - 7.5 Silicon 0.75% max Phosphorus 0.060% max Sulfur 0.030% max Chromium 16.00 - 20.00 Nickel 3.
7、50 - 6.00 Nitrogen 0.25% max (Less than 0.15 preferred.) 3.2.2.2 Mechanical Properties (ASTM E 8) #1 Finish (Bright,Annealed,or buffed and passivated.) Yield Strength, max 50,000 psi (345 MPa) Elongation, min 50 % Hardness, Rockwell “B“, max 90 #2 Finish (Bright Annealed and skin passed or buffed an
8、d passivated and skin passed) #2 finish is brighter and finer grained than #1 finish material.) Yield Strength, max 50,000 psi (345 MPa) Elongation, min 50% Hardness, Rockwell “B“, max 90 The above values are a guide to the minimum-maximum physical ENGINEERING MATERIAL SPECIFICATION ESB-M1A67-A Page
9、 3 of 5 Copyright 2014, Ford Global Technologies, Inc. properties to enable the material to form or make the required parts. The low yield designation applies to materials used for parts difficult to fabricated in roll-forming or stamping sections. It can be substituted for AISI Type 434 materials (
10、ESB-M1A70) in easily stamped or roll-formed sections, utilizing dies designed for use with AISI Type 434 steel. 3.2.3 Low Yield And Low Work Hardening Alloy 3.2.3.1 Chemical Composition Carbon 0.07 max Manganese 5.5 - 7.5 Silicon 0.75 max Phosphorus 0.06 max Sulfur 0.03 max Chromium 16.00 - 20.00 Ni
11、ckel 3.5 - 6.0 Copper 1.5 - 2.0 Nitrogen 0.25 max (less than 0.15 preferred) 3.2.3.2 Physical Properties (Annealed) Yield Strength, max 40,000 (275 MPa) Elongation, min 50 % Hardness, Rockwell “B“, max 82 The above material is primarily intended for use in deep drawing operations where lower yield s
12、trength and lower work hardening rate will be advantageous. This material provides corrosion resistance equal to Type AISI 201. 3.2.4 Surface Finish Material supplied to this specification shall be uniform in quality, clean, sound, smooth, not to exceed 10 RMS micro-inch finish and free from defects
13、 detrimental to performance in fabrication, corrosion resistance or appearance of part for which it is intended. The surface quality shall be such that the material can be buffed to a finish and luster to meet visual acceptance standards using a maximum of three buffing passes per standard procedure
14、s and using standard buffing equipment per FLTM BQ 6-3. The 10 RMS micro-inch finish does not apply to areas where a special surface finish such as frosted or brushed is specified. ENGINEERING MATERIAL SPECIFICATION ESB-M1A67-A Page 4 of 5 Copyright 2014, Ford Global Technologies, Inc. 3.2.5 Corrosi
15、on Resistance - As Received From the Mill FLTM BQ 5-1 The material required under this specification shall have been given sufficient final pickling and passivation treatment to obtain acceptable corrosion resistance. Material as received and given no further preparation shall not show signs of fail
16、ure by red rust, pit corrosion, or etching type corrosion beyond that tabulated below when subjected to the C.A.S.S. Test (Copper Acetic Acid Salt Spray Test) for a period of 16 hours. Table I Permissible Surface Corrosion Allowed After 16 Hour CASS Test Rating Number % Surface Attack Acceptable Not
17、 Acceptable 1 0 - 2 X 2 2 - 5 X* 3 5 - 15 X 4 15 - 25 X 5 25 - 35 X 6 Over 35 X *Material in this rating may be buffed using one buffing pass and retested per FLTM BQ 6-3. If on retest the material meets rating #1, the material shall be acceptable. 3.2.6 Corrosion Resistance - Buffed Samples Samples
18、 of flat sheet when buffed to a sufficient finish and luster to match the master visual inspection sample or samples approved by the affected Product Engineering Office, shall meet the corrosion requirements of #1 rating of red rust, pit corrosion and etching type corrosion as shown in Table I under
19、 paragraph 3.1.5, Corrosion Resistance. 3.3 FINISHED PRODUCTS - BRIGHT DECORATIVE SURFACE FINISH 3.3.1 Surface Finish Finished products shall have been buffed by an appropriate method, either by hand or mechanical means and with proper wheels, belts and compounds as required to produce an acceptable
20、 surface finish and luster on significant surfaces to meet the master visual inspection sample part or parts approved by the affected Product Engineering Office and to provide specified corrosion resistance. Mitered joints (Example: glass window frame) shall be welded to provide a non-porous surface
21、, when buffed shall provide a corrosion resistant finish; and meet the master visual acceptance standard. ENGINEERING MATERIAL SPECIFICATION ESB-M1A67-A Page 5 of 5 Copyright 2014, Ford Global Technologies, Inc. 3.3.2 Corrosion Resistance Significant surfaces of finished parts shall meet the corrosi
22、on resistance requirements for red rust, pit corrosion, and etching type corrosion as shown in Table I under paragraph 3.1.5 as follows: Exterior Parts: Rating No. 1 Interior Parts: Rating No. 2 3.3.3 Significant Surfaces Significant surfaces are those surfaces which in assembly are visible and subj
23、ected to wear or corrosion or both. Sheared or slit edges are excepted from the term significant surfaces unless specifically noted on the Engineering Drawing, which case they are to be buffed for corrosion resistance. 3.4 FINISHED PRODUCTS - SPECIAL DECORATIVE SURFACE FINISH 3.4.1 Surface Finish Fr
24、osted or brushed as specified on the Engineering Drawing. The special decorative surface finishes shall be applied to parts prepared in accordance with paragraph 3.2.1. 3.4.2 Corrosion Resistance Parts receiving special decorative surface finishes such as frosted or brushed require special adequate
25、corrosion protection. The special decorative surface finish and method of processing shall be as specified on the Engineering Drawing.* *Examples: ESB-M1A67-A Brush Finish and Chrome Flash Per ESB-M1P25-A See Styling Master SM 6 ESB-M1A67-A Frost Finish and Acid Passivate See Styling Master Sample S
26、M 89 Significant surfaces of finished parts shall meet the corrosion resistance requirements for red rust, pit corrosion, and etching type corrosion, as shown in Table I under paragraph 3.1.5 and follows: Exterior Parts: Rating No. 1 Interior Parts: Rating No. 2 3.4.3 Significant Surfaces Significant surfaces are those surfaces which in assembly are visible and subjected to wear or corrosion or both. Sheared or slit edges are excepted from the term significant surfaces unless specifically noted on the Engineering Drawing, in which case they are to be buffed for corrosion resistance.
