The degree of bending or deformation of the coated surface is measured to assess the coating flexibility the varying mandrel diameter 3. These test methods have been useful in rating attached coatings for their ability to resist. The effects of organoclay on the morphology and mechanical. Din en iso nf 6860, paints and varnishes bend test conical mandrel ecca t71996, resistance to cracking on bending. Astm d2794932010 standard test method for resistance of organic coatings to the effects of rapid deformation impact. The flexibility of the sample was performed on all coated specimens max technics, canada, according to astm d522, using a conical mandrel.
One is a rather standard handoperated sheet metal bender in which one specimen end is clamped and then a pivoting plate with handle for leverage bends the extending specimen over the mandrel. In the other, the coated panels are bent over cylindrical mandrels of various diameters. Standard test method for effect of household chemicals on clear and pigmented organic finishes. D522 d522m17 standard test methods for mandrel bend test of attached organic coatings flexibility mandrel bend test cylindrical mandrel apparatus organic coatings cracking resistance rubber. Bending around a 5 mm mandrel for all organic coatings except for twocomponent and waterthinnable liquid. Standard test methods for mandrel bend test of attached organic coatings coatings attached to substrates are elongated when the substrates are bent. In case of a negative result, the bend test shall be repeated on a panel coated with a thickness of. Astm d522 is a standard test methods for mandrel bend test of attached organic coatings. The mandrel bending test is a commonly used testing method for assessing the flexibility and the adhesion properties of coatings when these are subjected to bending stresses. A test method is not useful if all products pass or fail. Astm d522 standard test methods for mandrel bend test of attached organic coatings astm b571 standard practice for qualitative adhesion testing of metallic coatings. Astm d standard test methods for mandrel bend test of attached organic coatings.
R 2008 mandrel bend test of attached organic coatings astm e 119 2010a standard test methods for fire tests of building construction and materials astm e 68 2005e1 visual inspection of asbestos abatement projects. In certain cases the bend test can determine tensile strength. The sample with the coated surface is placed in a vise with the coating facing outward and bent over the mandrel until its two legs are parallel. A bend test is a method for measuring stiffness and yield properties of certain materials. The pentagon mandrel bend test apparatus is constructed of black anodized aluminum. Standard guide for evaluation of coatings applied to plastics. The coating materials to be tested are applied at a uniform thickness to panels of sheet metal or rubbertype materials. D16terminology for paint, related coatings, materials, and applications d 522 test methods for mandrel bend test of attached organic coatings d 523 test method for specular gloss d 609 practice for preparation of coldrolled steel panels for testing paint, varnish, conversion coatings, and related coating products.
They have been useful in evaluating the flexibility of coatings on flexible substrates. Professional cylindrical mandrel bend tester astm d522. Bend testing procedure for plated materials sharretts plating. D 1737 test method for elongation of attached organic coatings with cylindrical mandrel apparatus3 e 171 speci. D52293a2008 standard test methods for mandrel bend test of. D 522 test methods for mandrel bend test of attached organic coatings2 d 523 test method for specular gloss2 d 658 test method for abrasion resistance of organic coatings by air blast abrasive3 d 822 practice for filtered openflame carbonarc exposures of paint and related coatings2 d 870 practice for testing water resistance of coatings. For example, astm d522, standard test methods for mandrel bend test of attached organic coatings, was adapted by performing the test at low temperature. D52293a2008 standard test methods for mandrel bend test of attached organic coatings, 2008 you currently cannot view this content. D522 93a standard test methods for mandrel bend test of attached organic coatings, cracking, flexibility, resistancecracking. The mandrel bend is a very interesting physical test for multilayer systems, because the bend radius of the external layer is greater than that of the internal layers.
It is often used as a quality control test for buttwelded joints, having the advantage of simplicity of both test piece and equipment. Bend tests for ductility provide a simple way to evaluate the quality of materials by their ability to resist cracking or other surface irregularities during one continuous bend. It is used to qualify the coating resistance to cracking, upon bending, once they were applied and cured on sheet metal or on other flexible materials. D 2197 test method for adhesion of organic coatings by scrape adhesion3 d 2243 test method for freezethaw resistance of waterborne coatings5 d 2244 test method for calculation of color differences from instrumentally measured color coordinates3 d 2369 test method for volatile content of coatings3 d 2370 test method for tensile properties of. The pencil hardness was measured in the organic coatings on crs max technics, canada, according to astm d3363. This standard is issued under the fixed designation d. A number in parentheses indicates the year of last reapproval. Rev a standard test methods for mandrel bend test of attached organic coatings from sai global. Astm d522 93a2008 standard test methods for mandrel bend test of attached organic coatings coatings attached to substrates are elongated when the substrates are bent during the manufacture of articles or when the articles are abused in service. The bend test is a simple and inexpensive qualitative test that can be used to evaluate both the ductility and soundness of a material. Astm d522 mandrel bend test of attached organic coatings. Jul 12, 20 for example, astm d522, standard test methods for mandrel bend test of attached organic coatings, was adapted by performing the test at low temperature.
Bending around a 5 mm mandrel for all organic coatings except for twocomponent and waterthinnable liquid coatings. Standard test methods for mandrel bend test of attached organic coatings, annual book of standards, section 6, volume 06. Astm d522d522m standard test methods for mandrel bend test of attached organic coatings. The dimensions of the test jig shall be such as to give the bend test specimen a calculated percent outer fiber elongaion equal to at least that of the. Astm d522 93a standard test methods for mandrel bend test of. Mandrel bend test of attached organic coatings 1 this standard is issued under the. Astm d 1200 standard test method for viscosity by ford viscosity cup. The bend test requires using a mandrel with a diameter measuring at least four times the thickness of the sample. Standard test methods for mandrel bend test of attached organic coatings1 this standard is issued under the. These test methods cover the determination of the resistance to cracking flexibility of attached organic coatings on substrates of sheet metal or rubbertype materials. Standard test methods for mandrel bend test of attached organic coatings. These test methods have been useful in rating attached coatings for their ability to resist cracking when elongated. D52293a2001 standard test methods for mandrel bend test of. Investigation of the performance of ath powders in organic.
Active standard astm d522 d522m developed by subcommittee. Astm d dm 17 standard test methods for mandrel bend test of attached organic coatings type text as it 5d22 email us or call tollfree. Astm d522 contains two test methods which are used to determine the flexibility or resistance to cracking of organic coatings on substrates of sheet metal or rubbertype materials. Astm d 522, mandrel bend test of attached organic coatings. En 5237 resistance to cracking on bending tbend test. Assessing the resistance of a coating, paint, varnish or related products to cracking andor detachment from a surface when, subjected to bending around. Astm d 52201 painttests for chemical, physical and optical properties. Standard test methods for abrasion resistance of organic coatings by falling abrasive. Voluntary specification for high performance organic coatings on coil coated architectural aluminum substrates. Standard practice for testing primers and primer surfacers. D52293a2008 standard test methods for mandrel bend test. Assessing the resistance of a coating, paint, varnish or related products to cracking andor detachment from a surface when, subjected to bending around a cylindrical mandrel under standard conditions.
Bend testing procedure for plated materials sharretts. Qualtech products industry cylindrical mandrel paint film bend tester is designed and engineered in accordance with international test standards including. Astm d 522 standard test methods for mandrel bend test of attached organic coatings. Astmd522 standard test methods for mandrel bend test of. No expensive test equipment is needed, test specimens are easily prepared. Conical mandrel bend tester precision test instruments. You can also choose from electronic, hydraulic mandrel testing there are 161 suppliers who sells mandrel testing on, mainly located in asia.
One of the side plates is 18 inch thick and has one of the sides rounded to form a highstrength mandrel of this thickness. In the general notes from the table, note b states. In this situation, can one use a mandrel size based on the elongation of the welding consumable. Astm d522d522m 17 standard test methods for mandrel bend. R2008 standard test methods for mandrel bend test of attached organic coatings from sai global. Micom offers astm d522 as part of its surface coating test services. R 2004 resistance of organic coatings to the effects of rapid deformation impact astm d 522 1993a. Standard test method for mandrel bend test of attached organic coatings astm d 522. Standard test method for metal curtain walls for water penetration using dynamic pressure. Standard guide for testing waterborne architectural coatings.
The dimensions of the test jig shall be such as to give the bend test specimen a calculated percent outer fiber elongaion equal to at least that of the base material with the lower minimum elongation as specified in the base material specification. Because of the differential pulling forces between the multiple layers, they generate great stress and thus have a tendency to produce disbondment between the layers. Weathering tests of coatings5 d 522 test methods for mandrel bend test of attached organic coatings3 d 523 test method for specular gloss3 d 562 test method for consistency of paints using the stormer viscometer3. The flexibility of the coatings was tested on a conical mandrel with 2 mm diameter. D52293a2001 standard test methods for mandrel bend test.
Astm d522 d522m 17 standard test methods for mandrel bend. D 522 test methods for mandrel bend test of attached organic coatings d 823 practices for producing films of uniform thickness of paint, varnish, and related products on test panels d 1005 test methods for measurement of dryfilm thickness of organic coatings using micrometers d 1186 test methods for nondestructive measurement of. Bend the specimen back and forth repeatedly through. May 14, 2015 two mandrel devices are shown in astm d522 affil. Glossy topcoat exterior paint formulations using water. Standard test method for flexibility determination of hot. This precision conical mandrel bend tester is designed and engineered in accordance with international test standards including. Standard test methods for mandrel bend test of attached organic coatings d52293a2008 standard test methods for mandrel bend test of attached organic coatings, 2008. Astm international astm d52293a standard test methods for.