1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions Rev 03 2011 12 15 N Status A1/A2 - No Usage S. Ryzyi, NA 2002 07 23 Revised Updated and renumbered 1991 05 08 NE01E1012707601027076010 Released J. Webster Controlled document at www.MATS Page 1 of 3 Copyrigh
2、t 2011, Ford Global Technologies, Inc. GRAY CAST IRON, CYLINDER LINERS, THIN WALL NOT FOR NEW DESIGN WSE-M1A320-A1 GRAY CAST IRON, CYLINDER LINERS, (10 mm or thicker)NOT FOR NEW DESIGNWSE-M1A320-A2 GRAY CAST IRON, CYLINDER LINERS WSE-M1A320-A3 GRAY CAST IRON, CYLINDER LINERS, HIGH DURABILITY WSE-M1A
3、320-A4 1. SCOPE The materials defined by these specifications are gray cast iron with controlled hardness and microstructure to achieve optimum cylinder bore functional characteristics. 2. APPLICATION These specifications were released originally for materials used as cylinder liners in aluminum blo
4、cks. The A4 material was added for long-term durability and improved oil consumption. 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to th
5、e Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 CHEMICAL COMPOSITION (Weight Percent) A1 A2 A3 A4 Carbon (total) 3.00 - 3.70 2.80 - 3.60 3.00 - 3.50 3.00 - 3.50 Carbon Equivalent 4.45 max - 4.40 max 4.40 max Silicon 1.80 - 2.80 1.80 - 2.50 2.00 - 2.80 2.00 - 2.80 Mang
6、anese 0.50 - 0.90 0.50 - 0.90 0.50 - 1.00 0.50 - 1.00 Phosphorus 0.25 max 0.25 max 0.10 - 0.40 0.10 - 0.40 Sulfur 0.15 max 0.15 max 0.12 max 0.12 max Chromium 0.15 - 0.40 0.20 - 0.50 0.10 - 0.40 0.10 - 0.40 Copper + Nickel* 0.30 - 1.00 0.50 - 1.50 - 0.20 - 1.50 Tin - - 0.15 max 0.15 max ENGINEERING
7、MATERIAL SPECIFICATION WSE-M1A320-A1/A4 Page 2 of 3 Copyright 2011, Ford Global Technologies, Inc. Carbon Equivalent = Total Carbon + 1/3 Silicon * Nickel may be substituted for copper or visa versa to the extent that the total nickel plus copper equals specified amount. Specific composition limits
8、and foundry practice to meet performance and manufacturing requirements will form part of an agreed Control Plan for individual components. 3.3 HARDNESS ASTM E 10/ISO 6506, P/D2 Ratio = 30:1; ASTM E 18/ISO 6507) As cast Brinell hardness test location is on the OD at least 25 mm from the skirt end of
9、 the casting. Finished hardness and location shall be taken as shown on Engineering Drawing or Control Plan. A1 A2 A3/A4 As cast 179-248 HB 212-293 HB 205-273 HB Finished* 179-248 HB 200-285 HB 205-273 HB 85-99 HRB 93 HRB-30 HRC 94-104 HRB 210-300 HV *Average of three readings. 3.4 MICROSTRUCTURE (a
10、verage over a minimum of 10 adjacent fields at 100X magnification) (ASTM A 247/ASTM E 562) Evaluate microstructure at any position greater than 2 mm from finished outer diameter. The graphite structure at the wear surface of a finished liner at a point approximately 25 mm from the flange end shall c
11、onsist as defined in the following. Form VII flake graphite as follows: A1 A2 A3 A4 Type A, % min (size) 50 (4-6) 50 (4-6) Permissible 50 (4-7) Type B, % max (size) 50 (4-6) 50 (4-6) 75 (6-8) Type D&E, max (size) 10 75 (6-8) 25 (4-8) The graphite morphology, size and matrix microstructure content ma
12、y be measured by estimation, comparison to available industry charts, or by quantitative methods (ASTM E 562 or approved image analysis techniques). In case of dispute, the quantitative metallurgical method will be the umpire method. ENGINEERING MATERIAL SPECIFICATION WSE-M1A320-A1/A4 Page 3 of 3 Co
13、pyright 2011, Ford Global Technologies, Inc. The matrix microstructure at the wear surface shall consist of fine lamellar pearlite with a maximum of 5 % free ferrite and a maximum of 5 % free carbides. No carbide network is permitted. If present, iron phosphide eutectic (steadite) must be fine, even
14、ly distributed in a random pattern with no continuous network and shall not exceed 5 % for A1/A2 and 8% for A3/A4. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 REFERENCE DOCUMENTS The following documents are referenced in this specification: ASTM A 247 ASTM E 10 ASTM E18 ASTM E 562 ISO 6506 ISO 6507 QS 9000 WSS-M99P9999-A1
