ASTM D4950 - 14
Standard Classification and Specification for Automotive Service Greases
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1. Scope
1.1 This specification covers lubricating greases suitable for the periodic relubrication of chassis systems and wheel bearings of passenger cars, trucks, and other vehicles.
1.2 This specification defines the requirements used to describe the properties and performance characteristics of chassis greases and wheel bearing greases for service-fill applications.
1.3 The test requirements (acceptance limits) given in this specification are, as the case may be, minimum or maximum acceptable values for valid duplicate test results. Apply no additional corrections for test precision, such as described in Practice D3244, inasmuch as the precision of the test methods was taken into account in the determination of the requirements.
1.4 The values stated in SI units are to be regarded as standard.
1.4.1 Exceptions—Test Method D2596 reports test results in kgf units, and Test Method D4289 reports rubber hardness in Durometer Shore A units.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
SAE Standards
AMS 3217/2C Test Slabs, Acrylonitrile Butadiene (NBR-L)-Low Acrylonitrile, 65-75 With respect to elastomer AMS 3217/2B, the elastomer specification has been superseded by AMS 3217/2C. Per SAE, the 2A and 2B elastomers were identical, however the synthetic lubricant immersion fluid used to reference the elastomer has been exchanged from ARM-200 to AMS 3021. Reference fluid AMS 3021 better represents current market aviation fluids. Elastomers 2B and 2C were compared using NLGI GC-LB reference greases batch 1 and 2 and were found to give similar results. AMS 3217/3B Test Slabs Chloroprene (CR)-65-75 AMS 3217A Standard Elastomer Stock-Test Slabs SAE J310 Automotive Lubricating GreasesASTM Standards
D217 Test Methods for Cone Penetration of Lubricating Grease
D566 Test Method for Dropping Point of Lubricating Grease
D1264 Test Method for Determining the Water Washout Characteristics of Lubricating Greases
D1742 Test Method for Oil Separation from Lubricating Grease During Storage
D1743 Test Method for Determining Corrosion Preventive Properties of Lubricating Greases
D2265 Test Method for Dropping Point of Lubricating Grease Over Wide Temperature Range
D2266 Test Method for Wear Preventive Characteristics of Lubricating Grease (Four-Ball Method)
D2596 Test Method for Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method)
D3244 Practice for Utilization of Test Data to Determine Conformance with Specifications
D3527 Test Method for Life Performance of Automotive Wheel Bearing Grease
D4170 Test Method for Fretting Wear Protection by Lubricating Greases
D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants
D4289 Test Method for Elastomer Compatibility of Lubricating Greases and Fluids
D4290 Test Method for Determining the Leakage Tendencies of Automotive Wheel Bearing Grease Under Accelerated Conditions
D4693 Test Method for Low-Temperature Torque of Grease-Lubricated Wheel Bearings
ICS Code
ICS Number Code 75.100 (Lubricants, industrial oils and related products)
UNSPSC Code
UNSPSC Code 15121902(Grease)
Referencing This Standard
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DOI: 10.1520/D4950-14
Citation Format
ASTM D4950-14, Standard Classification and Specification for Automotive Service Greases, ASTM International, West Conshohocken, PA, 2014, www.astm.org
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