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Surface Texture, Roughness (Ra), Peak Count(Pc), and Mean Profile Spacing, (Rsm) Measurement of Metallic Coated and Uncoated Steel Sheet/Strip to be Formed and/or to be Painted
This SAE Recommended Practice describes a method for measuring Roughness Average (Ra) and Peak Count (PC) and other variables of the surface of metallic coated and uncoated steel sheet/strip.
Rationale
The industry needs to update the spec to reflect use of zinc and aluminized coated steels. New non contact methods of measurement are also being used which are now applicable to the measurement methods employed. A number of new parameters that are being investigated to further quantify surface texture and the impact on steel perfromance in the auto industry may also need to be added to this document.
The Metals Technical Committee (MTC) controls specifications for Ferrous and Non-Ferrous: Metallic Wrought Products, Cast & Sintered Products, Metal Properties & Processes, and Metal Test Procedures. The MTC oversees standards to establish uniform procedures that: 1) establish a common language for the industry to review materials and processes through standards, 2) are reviewed and updated on a regular 5-year basis with coordination to other industry specifications, and 3) creates a common industry interface for technical discussions. The MTC ensures that all standards are developed with qualified personnel to perform respective tasks, meets at least once a year to provide relevant updates to current specifications, and assesses whether new standards are needed by industry. The committee also maintains the public web pages by reviewing and updating the information necessary. The MTC shall report to the Materials Processes and Parts Council (MPPC) on a biannual basis. Participants in the SAE Metals Technical Committee include representatives from OEMs, suppliers, consulting firms, government, and other interested parties.
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Surface Texture, Roughness (Ra), Peak Count(Pc), and Mean Profile Spacing, (Rsm) Measurement of Metallic Coated and Uncoated Steel Sheet/Strip to be Formed and/or to be Painted
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Surface Texture, Roughness (Ra), Peak Count(Pc), and Mean Profile Spacing, (Rsm) Measurement of Metallic Coated and Uncoated Steel Sheet/Strip to be Formed and/or to be Painted
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