The data presented in this chapter is also provided online for customers who have access to the electronic edition of this book on science direct, or who own the print edition. A number in parentheses indicates the year of last reapproval. Under the conditions of the test method, high local multiaxial stresses are developed through the introduction of a controlled imperfection 2, 3. Designed in accordance with the astm d1693 international test standard, the apparatus is extremely cost effective and very simple to use. Accessories call us for replacement or spare parts. Astmd1693 historical revision information standard test method for environmental stresscracking of ethylene plastics astmd1693 2008 edition superseded show complete document history how to order. Active standard astm d1693 developed by subcommittee. Environmental stress crack resistance of polyethylene today, this test is specified less frequently because it is not as aggressive towards modern resins. Referenced documents purchase separately the documents listed below are referenced within the subject standard but are not provided as part of the standard astm standards. As thermal history is recognized as an important variable, test results by this test method employing laboratory molded samples cannot necessarily be expected to show agreement with test results from samples obtained by other means. Standard test method for oxidation stability of distillate.
A copy of the complete standard may be purchased from astm international, accessories call us for replacement or spare parts. Reconstitutes with water will not solidify in conduit. Standard hardness conversion tables for metals relationship. Technical note stress crack resistance for geomembrane products. Astm international by sections and volumes section 8 plastics volume 08.
Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may. Astm fixtures back astma185 steel welded wire reinforcement, plain, for concrete ths29020 astma262 detecting susceptibility to intergranular attack in austenitic stainless steels ths260115 astma370 mechanical testing of steel products ths565 ths265 ths5 astma497 steel welded wire reinforcement, deformed, for concrete ths29020. There is a variety of test methods available for assessing the escr of. Standard test method for oxidation stability of distillate fuel oil accelerated method1 this standard is issued under the. Environmental stresscracking resistance escr astm d1693. Morris products 99932 wire pulling lubricant, water based gel. When the material is under certain conditions of stress, these reagents can accelerate the cracking process which is one of the most common causes of unexpected brittle failure of polymers known. Standard test method for transition temperatures of polymers. Morris products 99930 wire pulling lubricant, water based gel.
Dw1441 environmental stress crack resistance test apparatus for geomembrane is used to evaluate the stress crack resistance of polyolefin geomembranes by notched constant tensile load test. Stresscracking resistance an overview sciencedirect topics. M d l n astm d1693 11 ni ki ji 420 harvester court wheeling, il. Temperature d1525 250 flexural modulus d790 100,000 psi 5. Astmd1693 historical revision information standard test method for environmental stresscracking of ethylene plastics astmd1693 2008 edition superseded show complete document history how to. Astmd1693 standard test method for environmental stress. To conduct a test, the material is cut to the required shape and shape and marked with a concentrated notch. D883standard definitions of terms relating to plastics.
D618 practice for conditioning plastics for testing. Portable fire extinguishers part 1 general requirements see other formats qqqpqpjp5jpqp d1693 15. Standard test method for determining the percentage of fractured particles in coarse aggregate1 this standard is issued under the. Standard test method for transition temperatures of polymers by differential scanning calorimetry1 this standard is issued under the. Environmental stresscracking resistance escr astm d1693 environmental stress cracking is the formation of cracks in a material caused by relatively low tensile stress and environmental conditions. There is a variety of test methods available for assessing the escr of thermoplastics and they can. Environmental stresscracking has been found to occur most readily under such. Specifications usually include a time before which no bottle may fail, and then a time at which a percentage of failures is acceptable e. Portable fire extinguishers part 1 general requirements see other formats qqqpqpjp5jpqp 11. Astm d1693 15, standard test method for environmental stresscracking of ethylene plastics, astm international, west conshohocken, pa, 2015. Environmental stress crack resistance of polyethylene figure 2 astm f1473 the polyethylene notch tensile pent test this method is used in the united states to test pe pipe grade materials that exhibit high escr values, as this test generally provides more timely results.
Extracted, with permission, from astm d1693 standard test method for environmental stresscracking of ethylene plastics, astm international, 100 barr harbor drive, west conshohocken, pa 19482. When they fail due to stress corrosion cracking, they can wreak environmental havoc. The bent strip test is a constant strain test, but polyethylene relaxes when strained. Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may exhibit mechanical. D1693 15 standard test method for environmental stresscracking of ethylene plastics. D169315 standard test method for environmental stresscracking of ethylene plastics ethylene plastics. Standard practice for accelerated aging of pressuresensitive. Standard test method for pressuresensitive tack of. Standard test method for pressuresensitive tack of adhesives. Test methods for evaluation of escr of plastics a common laboratory request for escprone polymers is to check escr performance for quality control, competitive product evaluations, and research and development work. Astm d1693 15 standard test method for environmental stress. D1505density of plastics by the densitygradient technique.
Book of standards reading room tracker services catalogs. When they are in good working order, they deliver fuel to meet the evergrowing demand for energy around the world. Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may exhibit mechanical failure by cracking. Defined and set by us, they improve the lives of millions every day. Dw1441 astm d1693 environmental stress cracking tester model no. The first stress crack test method used was astm d 1693. However, advances in resin technology have increased the scr of polyethylene higher than the level that can be tested via astm d 1693. Standard test method for determining the percentage of. In this chapter data for chemical resistance tests, test conditions, and test results are presented for the material polyethylene, mdpe. Standard test method for pressuresensitive tack of adhesives using an inverted probe machine1 this standard is issued under the. It is mainly applicable to the geomembranes used on the landfill site. Inconsistent data reporting with such a large number of variables, it is not surprising astm has found the precision of d 1693, when performed at different laboratories, to be 2. The series model is considered the lower bound and approximates the condition where the lower strength polymer. Astm f50122015, standard practice for continuous sizing and counting of airborne particles in dustcontrolled areas and clean rooms using instruments capable of detecting single submicrometre and larger particles, astm international, west conshohocken, pa, 2015.
Combined with our innovative business services, they enhance performance and help everyone have confidence in the things the buy and use. The criterion for the stress cracking resistance is the time period until the bottle starts to leak or burst. Astm d1693 15 standard test method for environmental. Astm d1693 94 standard test method for environmental. If using an astm type 152h hydrometer the calculation for the percentage of soil in suspension is the same for both aashto t 88 and astm d422. Caution should be used in comparing and ranking various ethylene plastics into distinct and separate groups by this test method see section and note 12. Standard test method for transition temperatures of. Environmental stress crack resistance of polyethylene. Modeling of the fracture mechanism of hdpe subjected to. Standard test method for tensile properties of plastics1. D1204 test method for linear dimensional changes of nonrigid thermoplastic sheeting or film at elevated temperature. Condition a is generally used for polyethylene with densities between 0. Astm d1693 01 standard test method for environmental stress. This stress relaxation allows testing to run without failure for very long periods 1,500 hours.
An astm designation number identifies a unique version of an astm standard. D1248 specification for polyethylene plastics extrusion materials for wire and cable. Dw1441 astmd1693 environmental stress cracking tester model no. Astm d1693 94 standard test method for environmental stress. In this study, escr from astm d1693 1, condition a, is used to evaluate the new approach. Astm d1693 12 standard test method for environmental.
An induced stress is made on the sample and it is place into the test sample rack and moved to the test tube which is filled with the test reagent and placed into the test bath at a constant temperature. This socalled bent strip test was able to differentiate the first resins used to manufacture geomembranes. The fill level is marked, and the time is noted when it falls. Astm standard test methods, and specifications relating to plastics, their raw. D1525test method for vicat softening temperature of plastics. A copy of the complete standard may be purchased from astm international. Standard scientific designs and manufacturers materials.
1548 1451 1388 172 604 508 1467 59 847 1026 393 177 1455 1013 1220 902 287 1003 1431 1488 103 463 1481 860 582 165 147 1416 89 182 49 943 1008 52 1294 474