ASTMD937-97

Designation:D 937-97 (Reapproved 2002)An American National StandardBritish Standard 4698INTERNATIONALIPDesignation:179/79(95)Standard Test Method forCone Penetration of Petrolatum1This standard is issued under the fi xed designation D937;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon (e)indicates an editorial change since the last revision or reapproval.This test method was adopted as a joint ASTM-IP Standard in 1965.This test method has been adopted for use by government agencies to replace Method 312 of Federal Test Method Standard No.791b.and Method 4273 of Federal Test Method Standard No.141A.1.Scope4.Summary of Test Method1.1 This test method covers measuring with a penetrometer4.1 The sample is melted,heated to 82C(180F),and thenthe penetration of petrolatum as an empirical measure ofcooled under controlled conditions to 25C (77 F).The pen-consistency.etration is measured with the cone and the sample at this1.2 The values stated in SI units are to be regarded as thetemperature using a penetrometer by means of which astandard.The values in parentheses are for information only.standard cone is applied to the sample for 5 s under a load of1.3 This standard does not purport to address all of the150g.safety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-5.Significance and Usepriate safety and health practices and determine the applica-5.1 Petrolatum is a purifi ed mixture of semi-solid hydrocar-bility of regulatory limitations prior to use.bons obtained from petroleum and is often described as anunctuous mass.Cone penetration is a means of measuring the2.Referenced Documentsfirmness or consistency of petrolatum.Such measurements are2.1 ASTM Standards:useful for selecting or specifying,or both,a petrolatum of aD 217 Test Methods for Cone Penetration of Lubricatingparticular consistency or firmness.Cone penetration valuesGrease2may or may not correlate with end-use functional properties.3.Terminology6.Apparatus3.1 Definitions:6.1 Penetrometer and Cone,as specif ed in Test Methods3.2 penetration of petrolatum-the depth,in tenths of aD217.millimetre,that a standard cone will penetrate the sample under6.2 Oven,capable of maintaining a temperature of 822 Cfi xed conditions of mass,time,and temperature.(180 5F)for melting the petrolatum samples.3.3 penetrometer;nan instrument that measures the con-6.3 Water Bath,constant-temperature,regulated to 25+sistency or hardness of semiliquid to semisolid materials by0.5°C(77±1F).measuring the depth to which a specified cone or needle under6.4 Sample Containers,cylindrical,having a flat bottom 100a given force falls into the material.6 mm (4 4 in.)in diameter and 65 mm (212 in.)or more3.3.1 Discussion-In this test method,a standard penetrom-in depth,constructed of at least 1