1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions 2015 11 23 N Status No longer used no replacement named G. Kowalski, NA 2006 10 31 Revised Inserted 3.0; Deleted 3.1, 3.2, 3.3, 3.5 & 4 1996 09 06 Activated J. Spencer Copyright 2015, Ford Global Technologies, LLC Page 1 of 3 TUBE, POLYAMIDE
2、12 (PA12), PVDF BARRIER, WSS-M98D33-A4 CONDUCTIVE POLYAMIDE 12 TUBE, HIGH PRESSURE, FUEL RESISTANT, CONDUCTIVE, LOW PERMEATING NOT TO BE USED FOR NEW DESIGN 1. SCOPE This specification defines a Multilayered Tubing with a conductive inner layer. The construction has low permeation rates and good res
3、istance to reformulated and flexible (methyl and ethyl alcohols) fuels. 2. APPLICATION This specification was released originally for flexible fuel lines requiring low permeation and electrical conductivity. The max working pressure should not exceed 690 kPa. Long term continuous operating temperatu
4、re should not exceed 90 C and max intermittent temperature should not exceed 115 C. These lines will meet the requirements of the U.S. market for both reformulated fuels and flexible (methyl and ethyl alcohols) fuels. 3. REQUIREMENTS 3.0 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppli
5、ers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.4 PERFORMANCE REQUIREMENTS 3.4.1 Room Temperature Burst, min 5520 kPa (SAE J2260, para 7.1) 3.4.2 High Temperature Burst, min 2070 kPa (SAE J2260, para 7.2, 90 C) 3.4.3 Heat Aged (I
6、SO 188/ASTM D 573, 150 +/- 50 air changes/h, 168 h at 115 +/- 2 C) After heat aging determine burst strength (SAE J2260, para 7.1). Acceptance Criteria: 4140 kPa minimum burst pressure. Check for delamination (SAE J2260 para 7.11.2). Acceptance Criteria: No loss of adhesion. 3.4.4 Heat Aged (ISO 188
7、/ASTM D 573, 150 +/- 50 air changes/h, 1008 h at 90 +/- 2 C) After heat aging determine burst 4140 kPa pressure, min (SAE J2260, para 7.1) Check for delamination No loss of (SAE J2260 para 7.11.2) adhesion ENGINEERING MATERIAL SPECIFICATION WSS-M98D33-A4 Copyright 2015, Ford Global Technologies, LLC
8、 Page 2 of 3 3.4.5 Resistance to Zinc Chloride, burst 4140 kPa pressure, min (SAE J2260, para 7.3) 3.4.6 Burst Test Kinked Tubing, burst 4140 kPa pressure, min (SAE J2260, para 7.4) 3.4.7 Resistance to Kinking Ball must pass (SAE J2260, para 7.5) freely 3.4.8 Cold Temperature Impact, burst 4140 kPa
9、pressure, min (SAE J2260, para 7.6) 3.4.9 Fuel Resistance 3.4.9.1 65% Fuel C, 20% methanol 15% methy tert-butyl ether (SAE J2260, para 7.7, 1008 h, 40 +/- 2 C) Perform cold impact, 4140 kPa (SAE J2260, para 7.6) then determine burst strength (SAE J2260, para 7.1) burst pressure, min Check for delami
10、nation No loss of (SAE J2260 para 7.11.2) adhesion 3.4.9.2 85% Fuel C, 15% methanol (SAE J2260, para 7.7, 1008 h, 40 +/- 2 C) Perform cold impact, 4140 kPa (SAE J2260, para 7.6) then determine burst strength (SAE J2260, para 7.1) burst pressure, min Check for delamination No loss of (SAE J2260 para
11、7.11.2) adhesion 3.4.10 Oxidized Fuel Resistance (Sour Gas) (SAE J2260, para 7.8, 360 h, 60 +/- 2 C, except prepare fuel per FLTM AZ 105-01 PN 180) ENGINEERING MATERIAL SPECIFICATION WSS-M98D33-A4 Copyright 2015, Ford Global Technologies, LLC Page 3 of 3 Perform cold impact, 4140 kPa (SAE J2260, par
12、a 7.6) then determine burst strength (SAE J2260, para 7.1) burst pressure, min Check for delamination No loss of (SAE J2260 para 7.11.2) adhesion 3.4.11 Electrical Resistance Surface resistivity less (SAE J2260, para 7.9) than or equal to 10e6 ohms 3.4.12 Permeation Resistance 80 gm/m2/24 h (SAE J22
13、60, para 7.10 using 75% Fuel C, 25% Methanol, 60 C, 200 kPa) 3.4.13 Fluid Resistance Cover Stock (Expose outside of tubing only) 3.4.13.1 Immersion in 85% Fuel C, 15% Methanol (ISO 1817/ASTM D471, 24 h at 40 +/- 2 C followed by 24 h at 90 C dry) Perform cold impact, 4140 kPa (SAE J2260, para 7.6) th
14、en determine burst strength (SAE J2260, para 7.1) burst pressure, min 3.4.13.2 Immersion in IRM 903 oil (ISO 1817/ASTM D471, 24 h at 40 +/- 2 C followed by 24 h at 90 C dry) Perform cold impact, 4140 kPa (SAE J2260, para 7.6) then determine burst strength (SAE J2260, para 7.1) burst pressure, min 5. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. 5.1 RECYCLING CODE
