1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 07 21 Revised Format Updated 2002 08 19 Revised Rev para 1, updated & renumbered A. Reaume 2002 03 07 Activated A. Reaume Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 3 TUBING, ECO, EPICHLOROHYDR
2、IN FUEL AND OIL RESISTANT WSS-M2D241-A2 1. SCOPE The material defined by this specification is epichlorohydrin rubber. 2. APPLICATION This specification was released originally for material used in non-reinforced vacuum tubing in engines and where gasoline, ozone, heat and tear resistance are major
3、requirements. This material does not use lead compounds in the formulation. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 MATERIAL TESTING 3.2.
4、1 Preparation of Test Specimens All test specimens shall be die-cut from molded test slabs. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm 3.3 ORIGINAL PROPERTIES 3.3.1 Hardness, Durometer A, +/- 5 70 (ISO 868/ASTM D 2240, instantaneous, plied-up specimen. Ha
5、nd held durometers shall not be used) 3.3.2 Tensile Strength, MPa, min 8.3 (ISO 37/ASTM D 412, Die C) 3.3.3 Elongation at Break, min 200 (Test Method according to para 3.6.3)3.3.4 Modulus at 100%, Elongation, MPa, min 3.0 (Test Method according to para 3.6.3)ENGINEERING MATERIAL SPECIFICATIONWSS-M2D
6、241-A2Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 2 of 3 3.3.5 Tear Strength, k N/m, min 26 (ISO 34, Method B, procedure Ca)/ASTM D 624, Die C1) 3.3.6 Compression Set, %, max 30 (ISO 815/ASTM D 395, Method B, except 25% compression, solid button specimens. 22 h
7、 at 100 C) 3.3.7 Ozone Resistance, max 0 (FLTM BP 101-01) 50 pphm for 70 hours at 38 C, 20% elongation 3.3.8 Low Temperature -34 Retraction, TR-10, C, min (ASTM D 1329) 3.4 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 120 +/- 2 C) Hardness, Durometer A, Change, max + 20 Tensil
8、e Strength Change, %, max -50 Elongation at Break Change, %, max -75 3.5 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 130 +/- 2 C) Hardness, International, Change, max + 10 Tensile Strength Change, %, max -50 Elongation at Break Change, %, max -60 3.6 IMMERSION IN OIL NO. 3 or I
9、RM 903 OIL (ISO 1817/ASTM D 471, 168 h at 130 +/- 2 C) Hardness International, Change, max -10 to +15 Tensile Strength Change, %, max -30 Elongation at Break Change, %, max -60 Volume Change, % max -5 to +15 ENGINEERING MATERIAL SPECIFICATIONWSS-M2D241-A2Printed copies are uncontrolled Copyright 200
10、4, Ford Global Technologies, LLC Page 3 of 3 3.7 IMMERSION IN FUEL C (ISO 1817/ASTM D 471, 70 h at 23 +/- 2 C) Hardness, International, Change, max -25 Tensile Strength Change, %, max -50 Elongation at Break Change, %, max -50 Volume Change, %, max + 40 3.8 IMMERSION IN FUEL C Dry out 24 h at 70 +/- 2 C) Volume Change, %, max -15 to + 5 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 RECYCLING CODE ECO
