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American National StandardTest Procedure and Acceptance Criteria for — Factory Applied Finish Coatings for Steel Doors and FramesANSI A250.3-2007 (R2011)
1 General1.1 Scope These methods prescribe the procedures to be followed in the selection of material, chemical preparation, coating application, testing, and evaluation of factory applied finish coatings for steel doors and frames. Coatings covered by this standard include paints, stains, clear coats, and powder coats. 1.2 Reference Documents ASTM B117-03, “Standard Practice for Operating Sal t Spray (Fog) Test ing Apparatus, ” ASTM D1654-92, “Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Cor rosive Envi ronments” ASTM D4585-99, “Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensat ion. ” ASTM G154-04, “Standard Pract ice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetal l ic Mater ials. ” ASTM D4587-01, “Standard Pract ice for Fluorescent UV-Condensation Exposures of Paint and Related Coat ings. ” ASTM D2794-93(2004), “Standard Test Method for Resistance of Organic Coat ings to the Effects of Rapid Deformat ion ( Impact ) . ” ASTM D3359-02, “Standard Test Method for Measur ing Adhesion by the Tape Test . ” ASTM D4060-01, “Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser. ” ASTM D610-01, “Standard Test Method for Evaluat ing Degree of Rust ing on Painted Steel Sur faces. ” ASTM D714-02, “Standard Test Method for Evaluat ing Degree of Bl ister ing of Paints. ” ASTM D4214-98, “Standard Test Method for Evaluating Degree of Chalking of Exterior Paint Fi lms. ” ASTM D523-89(1999), “Standard Test Method for Specular Gloss. ” ASTM D2244 -02e1, “S tanda rd Prac t ice fo r Calculat ion of Color Tolerances and Color Di fferences f rom Inst rumental ly Measured Color Coordinates. ” Material2.1 The test specimen shall be the exact type and gauge of steel as used in the manufacture of the product. The specimen shall be a minimum of 4" (102 mm) × 6" (152 mm) with a 1/4" (6.4 mm) hole at the center of the 4" (102 mm) width, 1/2" (12.7 mm) in from the end. Identification marks shall be added to the specimen as required for control purposes. The test specimen shall be handled at all stages of the process with clean gloves to prevent contamination. 2.2 The specimen(s) shal l be hung using a method representat ive of that used in product ion. 2.3 The test specimen(s) shall be cleaned, pret reated and coated in accordance wi th the manufacturers normal production method and procedure. All coating weights used on test specimens shall be documented and representative of the individual manufacturer’s normal production material. 2.4 At the end of the coating cycle, the specimen(s) shal l be removed f rom the coating system and handled careful ly. The coated surface of the specimen shall not be handled ANSI/SDI A250.3-2007 2 or come in contact with other objects in such a way as to disrupt the coated sur face. 2.5 Specimens shall be allowed to age at an ambient room temperature, for a minimum 72 hour duration, before any testing commences. 3 Testing3.1 Salt spray test a) Apparatus – The apparatus used for salt spray test ing shal l be of such design as to conform to ASTM B117-03, “Standard Practice for Operat ing Sal t Spray (Fog) Test ing Apparatus.” b) Test performance – Salt spray testing shall be conducted as specified in ASTM B117-03, “Standard Practice for Operating Salt Spray (Fog) Testing Apparatus,” for a test period of 120 continuous hours. The test specimen shall be scribed with an “X” per ASTM D1654-92, “Standard Test Method for Evaluation of Painted or Coated Specimens Subjected to Corrosive Environments”, sections 4.1 and 5.1. 3.2 Condensation testing (humidity) a) Apparatus – The apparatus used for condensat ion (humidi ty) test ing shal l be of such design as to conform to ASTM D4585-99, “Standard Pract ice for Test ing Water Resistance of Coatings Using Controlled Condensat ion. ” b) Tes t per formance – Condensation (humidity) test ing shall be conducted as specified in ASTM D4585-99, “Standard Practice for Testing Water Resistance of Coatings Using Cont rol led Condensat ion, ” for a test per iod of 480 cont inuous hours. Exposure temperatures shall be maintained at a minimum of 100°F (38°C) . Actual test temperature shall be noted in the report. 3.3 Accelerated weather ing test a) Apparatus – The apparatus used for accelerated weathering testing shall be of such design as to conform to ASTM G154-04 , “Standard Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials.” The bulb type used shall be a UVA340. b) Test performance – Accelerated weathering testing shall be conducted as specified in ASTM D4587-01, “Standard Practice for Fluorescent UV-Condensat ion Exposures of Paint and Related Coatings” For a test period of 300 hours duration. The cycle schedule for operating this type of equipment shall be 18 hours of light exposure at 140°F (60°C) followed by a 6 hour condensat ion cycle at 120°F (49°C) . 3.4 Impact test The coating shall be tested per ASTM D2794- 93(2004), “Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact),” with 20 inch pounds of direct impact using a Gardner Impact Tester with a 1/2" (12.7 mm) diameter ball or punch at room temperature of 70°-75°F (21°C-24°C). The test specimen shall be impacted at three locations on the panel that have a dry film thickness within the tolerance range for the coating process. Apply one-inch (25.4 mm) wide, #600 Scotch cellophane pressure-sensitive tape firmly to the impact area and pull off sharply. 3.5 Film adhesion test The coating film adhesion shall be tested in accordance with method “B” of ASTM D3359-02, “Standard Test Method for Measur ing Adhesion by the Tape Test.” A total of (11) parallel cuts are made with a sharp instrument, 0.039" (1 mm) apart in both a vertical and horizontal di rect ion forming a gr id. One- inch (25.4 mm) wide #600 Scotch cel lophane pressure-sensit ive tape is then f i rmly appl ied to the scr ibed surface and rapidly removed. 3.6 Abrasion test The coating film shall be tested with a Taber Abraser Testing Apparatus using a No. CS-10 Resilient Calibrase Wheel in accordance with ASTM D4060-01, “Standard Test Method for Abrasion Resistance of Organic Coatings by the Taber Abraser. ” 4 Acceptance criteria4.1 Salt spray resistance The coating film on the unscored surface of the test specimen shall have a rust grade of no less than 6 as defined in ASTM D610-01, “Standard Test Method for Evaluat ing Degree of Rust ing on Painted Steel Sur faces. ” Table 1 and the depictions shown in Figure 1 illustrate the scale used to evaluate the rust grades. The coating film at the scribe line shall not be undercut by rust more than 1/8" (3.2 mm) or a ANSI/SDI A250.3-2007 3 6 on each side of the scr ibe l ine when evaluated in accordance wi th ASTM D1654-92 and rated per ASTM D1654-92, Table 1. “Rating of Fai lure at Scr ibe (Procedure A) ” . 4.2 Condensat ion resistance The coating film shall be allowed to exhibit the dense pat ter n of #8 bl isters, but shal l have no more than the “few” pattern of #6 blisters as illustrated in the photographic reference ASTM D714-02, “Standard Test Method for Evaluating Degree of Bl ister ing of Paints. ” Test ing shal l be in accordance wi th Paragraph 3.2. Visual representations of the various degrees of blistering are shown in Figures 2 through 5 of this document . 4.3 Accelerated weather ing resistance When tested in accordance with Paragraph 3.3 herein, the paint film shall exhibi t the following traits: 4.3.1 No rust, checking, cracking, erosion or flaking shall be present . 4.3.2 No more than a few #6 blisters as illust rated in Figure 4 and in ASTM D714-02, “Standard Test Method for Evaluating Degree of Blistering of Paint . ” 4.3.3 A degree of chalking not to exceed #8 as illustrated in Figure 6 and in test method B of ASTM D4214-98, “Standard Test Method for Evaluat ing Degree of Chalking of Exter ior Paint Fi lms. ” 4.3.4 No more than a 50% decrease in gloss when tested in accordance with ASTM D523- 89(1999), “Standard Test Method for Specular Gloss. ” 4.3.5 No more than a 10% change in color (fade) when tested in accordance with ASTM D2244-02e1, “Standard Practice for Calculation of Color Tolerances and Color Differences from Inst rumentally Measured Color Coordinates. ” 4.4 Impact test No coat ing f i lm removal shal l occur other than at an area 1/8" (3.2 mm) in diameter at the center of the impact area, when tested in accordance with Paragraph 3.4. 4.5 Fi lm adhesion There shall be no adhesion loss less than a grade 3B as defined in ASTM D3359-02. This grade represents a film removal of between 5 and 15%. Table 2 on page 8 illustrates the var ious classi f icat ions for adhesion loss. 4.6 Abrasion resistance The coating film shall have a wear index of 100 (.10 mg weight loss per cycle) or less when tested in accordance with Paragraph 3.6 herein. 5 Report5.1 The report shall cover the date the test was per formed and the issue date of the report . 5.2 Identification of the specimen tested, source of supply, manufacturer, model or series number, or both, and any other pertinent information. 5.3 A detailed description of the specimen or specimens tested shall include the type of prime or barrier coating if used, the method of coating application, the procedure used to cure it and the dry film thickness. 5.4 Any modifications made on the test specimen to obtain the values of acceptance shall be noted and described. 5.5 A statement that the test or tests were conducted in accordance with the methods and procedures as specified herein. I f deviations from these methods and procedures were made, they shal l be described in the report . 5.6 When the test is made to check the conformance of the unit specimen to test requirements of a particular specification, the identification or description of the specification shall be included in the report. 6 General6.1 Testing laboratory All tests shall be conducted and certified by a nationally recognized, independent testing laboratory. 6.2 Certification When reference is made to this specification the following statement shall be used: “Finish coating has been tested in conformance with ANSI Standard A250.3-2006. ”
American National StandardApproval of an American National Standard requires verification by ANSl that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. Consensus is established when, in the judgement of the ANSl Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely voluntary; their existence does not in any respect preclude anyone, whether they have approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. The American National Standards Institute does not develop standards and will in no circumstances give any interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the secretariat or sponsor whose name appears on the title page of this standard.
Foreword(This Foreword is not part of American National Standard A250.3-2007) The material contained in this document has been developed under the auspices of the Technical Commi t tee of the Steel Door Institute. The original standard was issued on July 28, 1980 and was last revised in 1999. The current edition is a revision of the 1999 document with the contents being updated to reflect changes and advances that have taken place in the steel door and frame industry since that time. Suggestions for improvement gained in the use of this standard will be welcome. They should be sent to the Steel Door Institute, 30200 Detroit Road, Cleveland, Ohio 44145-1967. The organizations that have approved this standard are as follows: Amer ican Inst i tute of Archi tects
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