1、SSPC-PA 15March 11, 20131SSPC: The Society for Protective CoatingsMaterial and Preparation Requirements for Steel Test Panels Used to Evaluate the Performance of Industrial Coatings1. ScopeThis standard contains requirements for steel panels used to perform tests for evaluation of various performanc
2、e char-acteristics of protective coatings applied to steel substrates. Panels meeting requirements of this standard may be used for tests including, but not limited to, natural and accelerated exposure in or out of the laboratory; tests to determine resis-tance to various chemicals, impact, and abra
3、sion; and tests to characterize properties such as color, gloss, adhesion, and hardness. Requirements for steel composition, panel dimen-sions, surface preparation, ambient conditions for application and cure of coatings, and location and dimensions of scribes on coated panels are included.2. Refere
4、nced Standards2.1 The latest issue, revision, or amendment of the refer-enced standards in effect on the date of invitation to bid shall JRYHUQXQOHVVRWKHUZLVHVSHFLHG2.2 ,IWKHUHLVDFRQLFWEHWZHHQWKHUHTXLUHPHQWVRIDQRI WKH FLWHG UHIHUHQFH VWDQGDUGV DQG WKLV VSHFLFDWLRQ WKHUHTXLUHPHQWVRIWKLVVSHFLFDWLRQVKD
5、OOSUHYDLO2.3 SSPC STANDARDS AND JOINT STANDARDS:PA 2 Procedure for Determining Compli-ance to Dry Coating Thickness RequirementsSP 5/NACE No. 1 White Metal Blast Cleaning2.4 ASTM INTERNATIONAL STANDARDS:1D 512 Standard Test Methods for Chloride Ion In WaterD 823 Standard Practices for Producing Film
6、s of Uniform Thickness of Paint, Varnish, and Related Products on Test PanelsD 1640 Standard Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room Temperature D 1654 Standard Test Method for Evalua-tion of Painted or Coated Specimens Subjected to Corrosive Environments1 ASTM
7、 International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standars volume infor-PDWLRQUHIHUWRWKHVWDQGDUGVRFXPHQW6XPPDUSDJHRQWKH$670ZHEVLWHD
8、 4285 Standard Test Method for Indicating Oil or Water in Compressed AirD 4417 Standard Test Methods for Field 0HDVXUHPHQW RI 6XUIDFH 3UROH RIBlast Cleaned SteelD 4940 Standard Test Method for Conducti-metric Analysis of Water Soluble Ionic Contamination of Blasting AbrasivesD 7055 Standard Practice
9、 for Preparation (by Abrasive Blast Cleaning) of Hot-Rolled Carbon Steel Panels for Testing of CoatingsD 7393 Standard Practice for Indicating Oil in AbrasivesG 101 Standard Guide for Estimating the Atmospheric Corrosion Resistance of Low-Alloy Steels2.5 ANSI STANDARD2B94.50 Single-Point Cutting Too
10、ls, Basic 1RPHQFODWXUHDQGHQLWLRQVIRU3. Material and Surface Preparation3.1 Panel Requirements for Corrosion Resistance Testing: Hot-rolled carbon steel test panels shall be prepared in accordance with ASTM D 7055 except as otherwise speci-HGKHUHLQ7HVWSDQHOVVKDOOEHIDEULFDWHGIURPVWHHOKHDWVKDYLQJFHUWLH
11、GPLOOWHVWUHSRUWVDQGDQ$WPRVSKHULF copper, nickel, chromium, silicon, and phosphorus. The Atmospheric Corrosion Resistance Index shall be calculated in accordance with ASTM G 101, subsec-tions 6.3.1.1 and 6.3.1.2. Test panels shall have minimum dimensions of 100 mm x 150 mm (4 inch x 6 inch), for adhe
12、sion testing, the minimum panel thickness shall be 6 mm (1/4 inch). If VSHFLHGHDFKSDQHOVKDOOEHVWDPSHGZLWKDQLGHQWLILQJFRGHor number. Test panels shall be cleaned in accordance with SSPC-SP 5 using recyclable metallic abrasives. Compressed air used for blast cleaning shall be free of oil and water whe
13、n tested in accordance with ASTM D 4285. The abrasives shall have a maximum chloride content of 15 ppm determined in 2 American National Standards Institute, 1819 L Street, NW, Suite 600, Washington, DC 20036. Standards available online from www.ansi.org.SSPC-PA 15March 11, 20132accordance with ASTM
14、 D 512, a maximum conductivity of 150 microSiemens per centimeter as determined in accor-dance with ASTM D 4940, and shall be oil-free when tested LQDFFRUGDQFHZLWK$6708QOHVVRWKHUZLVHVSHFLHGthe abrasive mixture shall be approximately 60 weight percent SAE shot number S230 and 40 weight percent SAE gr
15、it number G40 (see Note 8.1). Both the shot and grit shall have D5RFNZHOOKDUGQHVVRI&8QOHVVRWKHUZLVHVSHFLHGWKHVXUIDFHSUROHRIWKHFOHDQHGWHVWSDQHOVVKDOOEHWRmicrometers (2.5 to 3.5 mils) when determined in accordance ZLWK$6700HWKRG&6XUIDFHSUROHPHDVXUHPHQWVshall be performed and documented for a minimum o
16、f 10% of WKHQXPEHURISUHSDUHGWHVWSDQHOV7KHVXUIDFHSUROHVKDOObe clean, and free of embedded friable material when exam-ined with the unaided eye. 3.2 The use of other panels and dimensions required by DVSHFLHGWHVWPHWKRGLVSHUPLWWHGLIWKHWHVWUHVXOWVZLOOEHunaffected by the metallurgy of the substrate (e.g.
17、, for evalu-ating impact resistance, abrasion resistance, or color and gloss retention). 4. Coating Application4.1 APPLICATION: The coating system shall be applied to WKHWHVWSDQHOVXVLQJWKHPDQXIDFWXUHUVZULWWHQUHFRPPHQGHGequipment and application conditions. Application conditions VKDOOEHUHFRUGHG,IWKH
18、PDQXIDFWXUHUVZULWWHQUHFRPPHQ-dations allow spray application, then apply the coating(s) in accordance with Practice A or D of ASTM D 823 (see Note 8.2). 4.2 RECOAT TIME AND CONDITIONS: For multi-coat VVWHPVUHFRDWVKDOOEHSHUIRUPHGZLWKLQWKHPDQXIDFWXUHUVwritten recommended recoat window or when the dry-
19、hard condition (per ASTM D 1640) is reached. During the recoat time, panels shall be cured at 16 to 27 C (60 to 80 F) and 35 to 65% relative humidity (see Note 8.2). Recoat time and conditions shall be recorded and reported.4.3 CURE: Prior to any exposure testing, all panels shall be cured for a min
20、imum of 14 days at 16 to 27 C (60 to 80 F) DQGWRUHODWLYHKXPLGLWDIWHUDSSOLFDWLRQRIWKHQDOFRDWXQOHVVRWKHUZLVHVSHFLHG VHH1RWH 4.4 BACK AND EDGE PROTECTION: Unless otherwise VSHFLHGWKHEDFNVLGHVDQGHGJHVRIFRDWHGWHVWSDQHOVsubjected to accelerated or natural exposure testing for corro-sion resistance shall b
21、e protected with tape or coating. The edge protection shall not overlap the face of the test panel by more than 6 mm (1/4 inch). 5. Coating Dry Film Thickness5.1 PROCEDURE:7KHGUOPWKLFNQHVVRIHDFKSDLQWHGtest panel shall be measured in accordance with SSPC-PA 2 Appendix 5 Method for Measuring Dry Film
22、Thickness on Coated Steel Test Panels.5.2 ACCEPTANCE CRITERIA: Unless otherwise speci-HGWKHGUOPWKLFNQHVVRIHDFKFRDWDVPHDVXUHGLQ6HFWLRQVKDOOFRPSOZLWKGUOPWKLFNQHVVUHTXLUHGEWKHFRDWLQJmanufacturer. 6. Scribing8QOHVVRWKHUZLVHVSHFLHGVFULEHWZRSDUDOOHOOLQHVRQthe face of each coated panel in accordance with t
23、he scribe-cutting procedure described in ASTM D 1654 using a lathe tool meeting requirements of ANSI/ASME B94.50. The lines shall be at least 1.25 cm (0.5 inch) from the edge, the top, and the bottom of each panel and at least 5 cm (2 inches) from each other. Each scribe shall be 10 cm (3.94 inches)
24、 long. The scribes shall run vertically down the face of the panel. Scribed test panels shall be protected from contamination prior to use.7. Disclaimer7.1 While every precaution is taken to ensure that all LQIRUPDWLRQIXUQLVKHGLQ663&VWDQGDUGVDQGVSHFLFDWLRQVLVas accurate, complete, and useful as poss
25、ible, SSPC cannot assume responsibility nor incur any obligation resulting from WKHXVHRIDQPDWHULDOVFRDWLQJVRUPHWKRGVVSHFLHGKHUHLQRURIWKHVSHFLFDWLRQRUVWDQGDUGLWVHOI7.2 7KLVVSHFLFDWLRQGRHVQRWDWWHPSWWRDGGUHVVSURE-lems concerning safety associated with its use. The user of WKLVVSHFLFDWLRQDVZHOODVWKHXVHU
26、RIDOOSURGXFWVRUSUDF-tices described herein, is responsible for instituting appropriate health and safety practices and for ensuring compliance with all applicable governmental regulations.8. NotesNotes are not requirements of this standard.8.1 7KHVSHFLHUPDZDQWWRFRQVLGHUUHTXLULQJsteel grit, for examp
27、le, when preparing panels for testing of thermal-spray coatings, as a shot/grit mix may not provide a VXIFLHQWODQJXODUSUROHUHTXLUHGIRUWKHVHFRDWLQJV8.2 In some cases, it may be advisable to specify applica-WLRQDQGFXUHFRQGLWLRQVDWWKHHWUHPHVRIWKHPDQXIDFWXUHUVrecommended ranges in order to simulate pote
28、ntial service environments. Application and cure conditions shall be recorded and reported.Copyright SSPC standards, guides, and technical reports are copyrighted world-wide by SSPC: The Society for Protective Coatings. Any photocopying, re-selling, or redistribution of these standards, guides, and
29、technical reports by printed, electronic, or any other means is strictly prohibited without the express written consent of SSPC: The Society of Protective Coatings and a formal licensing agreement.SSPC-PA 15March 11, 20133TABLE 1 SUMMARY OF TEST PANEL REQUIREMENTSSUBSTRATE REQUIREMENTSteelPanels sha
30、ll meet requirements of Section 3 for tests that are affected by metallurgy (e.g., corrosion testing, adhesion testing). 3DQHOVVKDOOPHHWUHTXLUHPHQWVVSHFLHGEWHVWPHWKRGIRUDEUDVLRQDQGLPSDFWresistanceSizePP LQ XQOHVVRWKHUZLVHVSHFLHG)RUDGKHVLRQWHVWLQJminimum panel thickness shall be 6 mm ( inch)Shape Fla
31、tSURFACE PREPARATION REQUIREMENTDegree of cleaning SSPC-SP 5, white metalBlast medium type *ULWVKRWPLWXUHDVGHVFULEHGLQ6HFWLRQXQOHVVRWKHUZLVHVSHFLHG3UROH65 - 90 m (2.5 - 3.5 mils) per ASTM D 4417, Method C, unless otherwise VSHFLHGCOATING APPLICATION REQUIREMENTTemperature:LWKLQPDQXIDFWXUHUVUHFRPPHQG
32、HGUDQJHDFWXDOWHPSHUDWXUHGRFXPHQWHGDWtime of applicationRelative humidity:LWKLQPDQXIDFWXUHUVUHFRPPHQGHGUDQJHDFWXDOWHPSHUDWXUHGRFXPHQWHGDWtime of applicationMethod $6700HWKRG$RUXQOHVVRWKHUZLVHVSHFLHGDFT measurement PA 2 Appendix 5Cure 0LQLPXPGDVXQOHVVRWKHUZLVHVSHFLHGSCRIBING REQUIREMENTNumber of scribes per panel 2 parallel vertical scribes, 5 cm (2 in) apartScribe method ASTM D 1654, using lathe tool as described by ANSI B94.50 Style EScribe length 10 cm (3.94 in)
