1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 07 23 Revised Para 3.0 inserted; para 3.2, 3.12, 3.15, 3.16 & 4 deleted 1991 02 25 Added 3.4, renumbered, updated NE01E10000474093 E. Duda1974 05 08 Released AD3-88 Printed copies are uncontrolled Copyright 2004, Ford Global Technologies,
2、 LLC Page 1 of 2 TUBING, SILICONE RUBBER ESE-M2D249-A 1. SCOPE The material defined by this specification is a moderately high heat and oil resistant silicone rubber. 2. APPLICATION This specification was released originally for material used in vacuum lines for engine applications. 3. REQUIREMENTS
3、3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.1 CONSTRUCTION Tubing or molded parts 3.3 ORIGINAL PROPERTIES Tensile Strength, min 6.9 MPa (ASTM D 412) Elongation
4、, min 200% Hardness, Durometer “A“ 50 - 65 (ASTM D 2240) 3.4 Silicone Volatiles, max 0.35% (FLTM AV 102-01, as received at Ford Motor Company) 3.5 HEAT AGING (ASTM D 573, 166 h at 275 +/- 2 C) Tensile Strength Change, max -35% Elongation Change, max -50% Hardness, Durometer A Change, max +12 3.6 OZO
5、NE RATING ESB-M9P1-A (FLTM BP 101-01) 3.7 COLD FLEXIBILITY No cracks Using samples from para 3.5 flex over 76 mm mandrel after 70 h at -40 C. ENGINEERING MATERIAL SPECIFICATIONESE-M2D249-APrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 2 3.8 VACUUM COLLAPSE, m
6、ax 10% The collapse of the outer diameter of the tubing produced from this compound shall be determined under an internal vacuum of 81 kPa for 5 minutes (vacuum tubing only). 3.9 IMMERSION IN ASTM #1 OIL (ASTM D 471, 166 h at 177 +/- 2 C) Tensile Strength Change, max -40% Elongation Change, max -18%
7、 Volume Change, max +10% Hardness, Durometer A Change, max -11 3.10 IMMERSION IN ASTM FUEL A (5 h at 23 +/- 2 C) Hardness, Durometer A Change, max -15 Volume Change, max +45% Test Method: Pour 150 mL of ASTM Fuel A into a 500 mL Erlenmeyer flask. Hang the sample 50 mm from the top of the fuel. Stopp
8、er the flask. After 5 h remove the sample and test immediately. 3.11 COMPRESSION SET, max 25% (ASTM D 395, Method B, plied, 70 h at 150 +/- 2 C) 3.13 QUALITY CONFORMANCE 3.13.1 Initial Qualifications Test Each supplier to this specification must have its initial shipment completely tested to all the
9、 above requirements by a Ford Motor Company laboratory in accordance with Q101, and the results of such tests concurred by the affected product engineering office prior to shipment. 3.13.2 Production Shipments Samples from each lot (a lot is 15,000 m of tubing maximum, or the parts produced in an 8
10、h shift) shall be tested and certified by the supplier to the requirements of para 3.3, 3.8 and 3.11. In addition, the supplier must maintain records of all in-plant control parameters necessary to insure quality and uniformity from batch to batch. Para 3.8 pertains to vacuum tubing only. 3.13.3 Per
11、iodic Qualification Tests Every 4 months each part supplier is required to perform complete qualifications testing on every size of part supplied to Ford Motor Company. The testing may be performed either by a Ford or supplier laboratory and records retained for review by the appropriate quality control activity. 3.14 SOURCE IDENTIFICATION Each part shall have the suppliers identification marks permanently affixed. The markings shall be identical to those shown in the Rubber Manufacturers Association Source Identification Book.
