1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2004 09 17 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.15 Updated E. Duda1990 02 06 Released WSD-M4D401-A C10058098 B. HennesseyPrinted copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 1 of 4 FLUOROELASTOMER (FKM
2、), OXYGENATED/OXIDIZED WSD-M2D401-A FUEL RESISTANT, COMPRESSION STRESS RELAXATION RESISTANT, O-RING FLUOROELASTOMER (FKM), OXIDIZED FUEL WSE-M2D401-A2 RESISTANT, COMPRESSION STRESS RELAXATION RESISTANT, LOW TEMPERATURE RESISTANT, O-RING FLUOROELASTOMER (FKM), OXYGENATED/OXIDIZED WSE-M2D401-A3 FUEL R
3、ESISTANT, COMPRESSION STRESS RELAXATION RESISTANT, LOW TEMPERATURE RESISTANT, O-RING 1. SCOPE The material described by these specifications is a fluoroelastomer (FKM) O-ring with good resistance to highly aromatic fuels, including those containing methanol and ethanol (flex fuels). 2. APPLICATION T
4、hese specifications were released originally for material used in O-rings for use within the fuel system such as for sealing fuel injectors into the fuel rail. These materials have excellent resistance to stress relaxation, sour gas and automotive fuels insuring long-term sealability. WSE-M2D401-A2
5、and WSE-M2D401-A3 have good low temperature resistance and will remain serviceable down to -40 C. Of the three materials only WSE-M2D401-A3 can be used if resistance to both low temperatures and flex fuels e.g. gasoline and methanol, are required. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUC
6、TION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 MATERIAL TESTING 3.4.1 Preparation of Test Specimens All tests shall be carried out on finished parts. When not feasible, specimens cut from molded t
7、est sheets manufactured from the same material and with equivalent cure to molded parts are recommended. The test sheets shall have the following dimensions: 150 x 150 mm, min x 2.0 +/- 0.2 mm ENGINEERING MATERIAL SPECIFICATIONWSD-M2D401-A/A2/A3Printed copies are uncontrolled Copyright 2004, Ford Gl
8、obal Technologies, LLC Page 2 of 4 3.5 ORIGINAL PROPERTIES A A2 A3 3.5.1 Hardness, International 67 - 80 68 - 82 60 - 74 (ISO 48/ASTM D 1415, micro method) 3.5.2 Tensile Strength, MPa, min 9.0 7.0 6.7 (ASTM D 1414, Section 8 or ISO 37/ASTM D 412 Die C) 3.5.3 Elongation at Break, 125 125 150 %, min (
9、ASTM D 1414, Section 8) 3.5.4 Compression Set, %, max 35 40 50 (ASTM D 1414, Section 10) 70 h at 200 +/- 2 C) 3.5.4.1 70 h at 130 C - 18% - 3.5.5 Tear Strength, kN/m, min 25 20.0 10.0 (ISO 34, Method B, Procedure (a)/ASTM D 624 Die C) 3.5.6 Ozone Resistance, Rating, max 0 0 0 (FLTM BP 101-01, Proced
10、ure A) 3.6 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h, 1,000 h at 200 +/- 2 C) 3.6.1 Hardness Change, max +10 +7 +7 3.6.2 Tensile Strength Change, -30 -30 -15 %, max 3.6.3 Elongation at Break -40 -12 to +20 -42 Change, %, max 3.7 HEAT AGED (ISO 188/ASTM D 573, 150 +/- 50 air changes/h,
11、168 h at 250 +/- 2 C) 3.7.1 Hardness Change, max +15 +10 +/- 10 (90 IRHD max value) 3.7.2 Tensile Strength Change, -15 -30 +30 to -60 %, max 3.7.3 Elongation at Break -40 -25 -20 to +50 Change, %, max (100% min value) ENGINEERING MATERIAL SPECIFICATIONWSD-M2D401-A/A2/A3Printed copies are uncontrolle
12、d Copyright 2004, Ford Global Technologies, LLC Page 3 of 4 3.8 IMMERSION IN ASTM FUEL C (ISO 1817/ASTM D 471, 168 h at 23 +/- 2 C) A A2 A3 3.8.1 Hardness Change, max -10 -14 -10/+5 3.8.2 Tensile Strength -35 -28 -30 Change, %, max 3.8.3 Elongation at Break -25 -30 -25 to +20 Change, %, max 3.8.4 Vo
13、lume Change, %, max +10 0/+10 0 to +12 3.9 IMMERSION IN 100% METHANOL (ISO 1817/ASTM D 471,168 h at 23 +/- 2 C) 3.9.1 Hardness Change, max - - -22 3.9.2 Tensile Strength Change, - - -55 %, max 3.9.3 Elongation Change, % - - -25 to +20 3.9.4 Volume Change, %, max - - +18 3.10 IMMERSION IN ASTM FUEL C
14、 +15% METHANOL (ISO 1817/ASTM D 471, 168 h at 23 +/- 2 C) 3.10.1 Hardness Change, max -25 -32 -22 3.10.2 Tensile Strength -70 -68 -55 Change, %, max 3.10.3 Elongation at Break -37 -30 -35 Change, %, max 3.10.4 Volume Change, % +5 to +37 0 to +48 0 to 22 3.11 IMMERSION IN ETHANOL FUELS The testing ca
15、rried out by immersion in methanol-containing fuels validates the material for use in ethanol-containing fuels. ENGINEERING MATERIAL SPECIFICATIONWSD-M2D401-A/A2/A3Printed copies are uncontrolled Copyright 2004, Ford Global Technologies, LLC Page 4 of 4 3.12 IMMERSION IN OXIDIZED (SOUR) FUEL (FLTM A
16、Z 105-01, PN 180, 336 h at 60 C) A A2 A3 3.12.1 Hardness Change, max -25 -45 -25 3.12.2 Tensile Strength Change, -70 -66 -60 %, max 3.12.3 Elongation at Break -37 -15 to +26 +30 Change, %, max 3.12.4 Volume Change, %, max +45 +45 0 to +28 3.13 COMPRESSION STRESS RELAXATION, 0.35 0.40 - F1000/Fo, min
17、 (ISO 6056 at 25% compression, carried out on finished parts) Measure the initial back-force (Fo) after 30 minutes at 23 +/- 2 C. Age at 150 +/- 2 C and take back-force (Ft) measurements at 23 +/- 2 C after 24, 48, 96, 168 h and thereafter every 168 h until a total elapsed test time of 1,000 h has b
18、een completed. Plot Ft/Fo against log 10 time in hours. 3.14 LOW TEMPERATURE FLEXIBILITY TEST, -18 -29 -21 TR10, C, max (ASTM D 1329) 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 IMMERSION IN 100% METHANOL (ISO 1817/ASTM D 471, 168 h at 23 +/- 2 C) 5.1.1 Hardness Change, max -30 -40 - 5.1.2 Tensile Strength Change, -60 -78 - %, max 5.1.3 Elongation at Break -20 -38 - Change, %, max 5.1.4 Volume Change, %, max +90 +120 -
