1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 07 30 Revised See summary of revisions L. Schmalz, NA 2008 11 03 B2/B3 N-STATUS B2/B3 Replaced by WSS-M13P13-A L. Schmalz, FNA 1991 04 26 Released CE00E10109215007 C. C. Gray Printed copies are uncontrolled Copyright 2010, Ford Global Tec
2、hnologies, LLC Page 1 of 2 LUBRICANT, POLYALKYLENE GLYCOL WSH-M1C231-B NOT TO BE USED FOR NEW DESIGN WST-M1C231-B2 NOT TO BE USED FOR NEW DESIGN WSS-M1C231-B3 1. SCOPE WSH-M1C231-B: This material specification defines the physical and chemical properties of a polyalkylene glycol based synthetic lubr
3、icant to be used with HFC-134a. WST-M1C231-B2: This material specification defines the physical and chemical properties of a polyalkylene glycol based synthetic lubricant to be used with HFC-134a; for heavy truck air conditioning systems. WSS-M1C231-B3: This material specification defines the physic
4、al and chemical properties of a polyalkylene glycol based synthetic lubricant to be used for seals in HVAC systems that use HFC-134a type refrigerants. 2. APPLICATION This specification was released originally for oils used in air conditioning compressors operating within the temperature range of -4
5、0 to 125 C. 3. REQUIREMENTS 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). B B2 B3 3.3 SPECIFIC GRAVITY 0.95 - 1.05 0.98 - 1.08 1.02 - 1.08 (ASTM D4052, 20 C) 3.4 V
6、ISCOSITY (ISO 3164/ASTM D445/ DIN 51562) At 40 C 46 mm2/s min 73 82 mm2/s min 437 483 mm2/s min At 100 C 10 15 mm2/s min 15 mm2/s min - 3.5 VISCOSITY INDEX 200 min (ASTM D2270) 3.6 WATER CONTENT 700 ppm max 1000 ppm max - (ASTM D6304) 3.7 FLASH POINT 200 oC min 200 oC min 260 oC min (ISO 2592/ASTM D
7、92/ ASTM D1310) ENGINEERING MATERIAL SPECIFICATIONWSH-M1C231-B WST-M1C231-B2 WSS-M1C231-B3 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 2 B B2 B3 3.8 POUR POINT -40 oC max - -30 oC max (ISO 3016/ASTM D5949) 3.9 TOTAL ACID NUMBER 0.22 mg KOH/g, max - 1.0 mg
8、KOH/g, max (ASTM D974) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Grease approved to this specification should have the following typical properties. 4.1 EVAPORATION LOSS 5.0 %, max - - (ASTM D972
9、, 24 h at 100 +/- 2 C) 4.2 LUBRICANT PAINT No softening, no discoloration STAINING (B only) (FLTM BJ 126-01) 4.3 WEAR PREVENTIVE 2702 N min - - CHARACTERISTICS (ASTM D3233) 4.4 SEALED TUBE STABILITY TEST (ANSI/ASHRAE Standard 97-2007 14 days at 175 C with HFC-134a) Change in Viscosity at 40 C 10 mm2
10、/s max - - (ASTM D 445) Test Method: After aging, visually inspect the test tube contents for liquid discoloration and any deposits formation. Visually inspect the metal coupons for discoloration or evidence of corrosion and/or copper plating. Analyze HFC-134a/PAG using the Selective Ion Electrode M
11、ethod for ppm of fluoride and chloride. 4.5 CONSISTENCY This material shall be free from acid, alkali, or other foreign matter. It must also be free from any objectionable odors. 5. SUMMARY OF REVISIONS 2010 07 30 Moved non lot testing to General Information and updated test methods. 3.3 changed temp in specific gravity from 15.6 to 20 C 3.5 changed water content max from 1000 to 700 ppm. Added Viscosity Index Updated sealed tube stability test method
