ASTM D4950 - 14

    Standard Classification and Specification for Automotive Service Greases

    Active Standard ASTM D4950 | Developed by Subcommittee: D02.B0.04

    Book of Standards Volume: 05.02

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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Butadiene (NBR-L)-Low Acrylonitrile, 65-75 With respect to elastomer AMS 3217/2B, the elastomer specification has been superseded by AMS 3217/2C.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 Greases

    ASTM 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
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D4950-14

    Citation Format

    ASTM D4950-14, Standard Classification and Specification for Automotive Service Greases, ASTM International, West Conshohocken, PA, 2014,

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