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SN EN ISO 20623 : 2004

Withdrawn
Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

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withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

PETROLEUM AND RELATED PRODUCTS - DETERMINATION OF THE EXTREME-PRESSURE AND ANTI-WEAR PROPERTIES OF FLUIDS - FOUR BALL METHOD (EUROPEAN CONDITIONS)
Withdrawn date

08-01-2018

Published date

01-12-2013

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents and materials
   5.1 Cleaning solvents
6 Apparatus
   6.1 Four-ball extreme-pressure lubricant testing machine
   6.2 Friction recording device (optional)
   6.3 Loading discs
   6.4 Microscope
   6.5 Timer
   6.6 Test balls
   6.7 Assembly device
7 Samples and sampling
8 Preparation of apparatus
9 General procedure
10 Test procedures
   10.1 Mean Hertz load (MHL)
   10.2 Wear-load curve, welding load, flash temperature parameter
        and initial seizure load
   10.3 Wear test
11 Calculations
   11.1 General
   11.2 Mean Hertz load
   11.3 Wear-load curve, flash temperature parameter and initial
        seizure load
12 Expression of results
13 Precision
   13.1 General
   13.2 Repeatability
   13.3 Reproducibility
14 Test report
Annex A (normative) Mean Hertz load data sheet
Annex B (normative) Calibration of friction recorder springs
Bibliography
Annex ZA (normative) Normative references to international
         publications with their relevant European publications

Gives procedures for the measurement of the extreme-pressure (EP) and anti-wear properties of lubricating oils and fluids by means of the four ball machine.

DocumentType
Standard
PublisherName
Swiss Standards
Status
Withdrawn
SupersededBy

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