ASTM_C_600_-_85_2015.pdf

Designation:C60085(Reapproved 2015)Standard Test Method ofThermal Shock Test on Glass Pipe1This standard is issued under the fixed designation C600;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 Since thermal shock resistance is so closely related tothe linear coefficient of expansion,this test method for thedetermination of the thermal shock resistance of glass processpipe is primarily intended to supplement test results on thelinear coefficient of expansion,Test Method E228.This ther-mal shock test will not ordinarily be performed except in thosecases where the thermal shock resistance may be questioned.1.2 This test method covers only two of four thermal shockpossible approaches,namely independent downshock of out-side and inside pipe surfaces.Downshock is more severe sincea higher tensile stress is produced and,hence,more likely toproduce failure.1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E228 Test Method for Linear Thermal Expansion of SolidMaterials With a Push-Rod Dilatometer3.Significance and Use3.1 This test method provides a practical means of assessingglass pipe strength under short-duration,thermally-imposedtensile stresses.In addition to a principal role played by thelinear coefficient of thermal expansion,glass surface defectscan also be major factors in reducing downshock performance.4.Apparatus4.1 Oven,equipped with a device to maintain the tempera-ture with 65F(63C)of the specified temperature.Anindicating controller is recommended.Otherwise,a dial ther-mometer should be attached and the temperature controlledmanually.4.2 Water Tank,at least 18 in.(457 mm)deep with a widthand length sufficient to accommodate the samples to be tested.The tank shall be filled with ice water to a depth of at least 12in.(305 mm).The water temperature shall be maintained at 346 2F(1 6 1C).4.3 Timer,capable of measuring seconds.5.Sampling5.1 Arandom sampling of 1%(but not less than two pieces)of pipe and fittings shall be made.6.Procedure6.1 Set the oven at the proper temperature,in degreesFahrenheit,determined as follows:Toven5 3211.25Trecommended!(1)6.2 Thermal Shock TestOutside SurfaceClose off allopen ends of sample;use glass pipe caps or flat metal plates,plus the necessary flanges,gaskets,inserts,nuts,and bolts.Keep the closed sample in the oven,at temperature,for at least30 min.Completely submerge the sample in the tank of icewater for 30 s.Keep the time elapsed between removing thesample from the oven and submerging it in ice water not lessthan 15 s,nor more than 45 s.Inspect each sample forindications of failure.6.3 Thermal Shock TestInside SurfaceClose off all openends of sample except one;use glass pipe caps or flat metalplates,plus the necessary flanges,gaskets,inserts,nuts,andbolts.Keep the partially closed sample in the oven,attemperature,for at least 30 min.Remove the sample from theoven,placing the one open end up.Pour ice water into the openend of the sample to overflowing.Keep the time elapsedbetween the removal of the sample from the oven and thebeginning of the time to pour the water to no less than 15 s and1This test method is under the jurisdiction of ASTM Committee C14 on Glassand Glass Products and is the direct responsibility of Subcommittee C14.05 onGlass Pipe.Current edition approved Nov.1,2015.Published November 2015.Originallyapproved in 1967.Last previous edition approved in 2010 as C600 85(2010).DOI:10.1520/C0600-85R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 no more than 45 s.Pour water into the sample at a rate suchthat the sample shall be filled within 1 min from the start of thepouring.NOTE1For tests in 6.1 through 6.3 the same sample(s)may be usedfor inside and outside surfaces(unless the sample fails one of the twotests).7.Report7.1 Report the following:7.1.1 Sampling percentage,7.1.2 Number,size,and description of each sample tested,7.1.3 Time of transfer used,7.1.4 Temperature differential used,and7.1.5 Results of test:7.1.5.1 For the outsi