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So if I’m interpreting this correct, there is both a color difference and a salt spray difference. This guide provides for two plans: Fnr thesc reasons a flat test panel should be usai to evaluate the prwess capability and the angle should be controlled to cnsure consistent Ille: The problem may not be with the chromate at all. This applies to all metals.Ĭiuidc 13 provides a default plan if one is not specified. To determine the nature of accuracy or revision level please verify above data with current releases: We have no amendments or corrections for this standard. The procedure is known as sampling inspection. Type Satm chromates are more commonly used where greater corrosion resistance is required, e. Thc size of the sample and the criteria for compliance are determined by the application h633-11 statistics. III zinc plating A discussion started in but continuing through Q. ASTM B – 11 Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel Not the least of which is the environmental regulations impact on the future of the selected finish. Test Method 13 contains several plans and also gives instructions for calculating plans lo meet special needs. It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages. Electroplated springs and other puts subject to flexure sliall not be Ilcxed before the hydrogen embrittlement relief treatment. Zinc plated components vary from one industry to another. Please first log in with a verified email before subscribing to alerts. ASTM B Thickness classes for coatings: KEY: Classification #, Service condition, Thickness Fe/Zn 25, SC4 (very severe), 25um or ″ Fe/Zn 12, SC3. This specification covers requirements for electrodeposited.
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ASTM B Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. He is asking for more info on the difference between ASTM B type II and type III.
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