Designation: B − Standard . chaser shall state ASTM B, the date of issue, service . Corrosion Resistance—Zinc coatings with Types II, III. ASTM B ELECTRODEPOSITED COATINGS OF ZINC ON IRON AND STEEL. Type II, Zinc coating with colorful chromate passivation, 96 hours 48 hours. Zinc Plating Finish Specification ASTM-B Type II With supplementary chromate treatment. Type III With supplementary colorless chromate treatment.

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ASTM B-633 Type II vs. III zinc plating

Zinc plating is usually considered a functional coating, not a oi one. This is not considered a decorative finish and will not generate matching parts.

Also, some yellow chromates are clear w. The coating is made according to demand, where the distribution is as follows: What type of zinc plating bath is your plater using? Our Barrel Plating line is fully automated and digitally controlled with special programs, and individual recipes to manage cleaning, plating, and chromating operations.

To minimize your searching efforts and to offer multiple viewpoints, we’ve combined some threads into the dialog you’re viewing. High strength steels tensile strength greater than M. I need to specify platings that do not contain Hexavalent Chromium for parts that will be used in the automotive industry.


Rest in peace, Ken. The type of passivation is determined according to the required characteristics, and is divided into groups: According to RoHS the homogeneous and non-homogeneous are defined in such manner that every one may understand that the layer is removable let’s see how.

Barrel Zinc – Finishes – Professional Plating Inc.

It’s not possible to axtm-b633 a finishing problem or the hazards of an operation via these pages. But if you are looking for something indisputably blue, as opposed to clear with a possible slightly bluish cast, this probably requires dye. They share, however, the most basic of metal finishing requirements: What process variation would produce these different results?

Certain castings are difficult, if not impossible, to plate in either cyanide or alkaline non-cyanide aztm-b633 baths.

Zinc Plating: ASTM B Type II vs. III

Did you ever get ast,-b633 answers you were looking for? SC 1 mild – Exposure to indoor atmospheres with rare condensation and minimum wear or abrasion. Can be similar to stainless steel in color, or can be dull gray or light gray almost white color. Where corrosion resistance is important.

Our plater would like to go to a clear zinc, but our customer is under the assumption that the clear will not do as tye a job with corrosion resistance and salt spray life.

Decorative charastreistics The exterior visual determined according to last layer.

Barrel Zinc

Most aluminum alloys depending on process used. Can be used as an electrical insulation coating. All I need to know is what typd the types are. Thickness Classes for Coatings: To prevent formation of case during. Could you explain this? The above entries are somewhat dated: Olive Drab chromate is hrs.


A heavy chromate will shear under paint and cause the paint to peel. Has a low coefficient of thermal expansion-is magnetic. Put the chromate on light. Numeral indicates thickness in micrometers. Aluminum with low alloying elements will show practically no color change.

You can get the same finish only for blue and black hex chrome with tri tyle, but not for yellow or olive as of yet. The black layer has also additional target —prevention of light reflection from the part and is used for optical parts.

Smaller parts, including fasteners, hardware, and metal stampings can be efficiently and economically handled in Professional Plating’s Barrel Zinc Plating line. Zinc plated components vary from one industry to another.

I am not getting the difference between this. Olive green and Black passivation is thick and has high electrical resistance. Corrosion resistance Colorful chromate passivation gives corrosion resistance ability of 96 hours according to ASTM B until white spots-intended to parts used in a high astm-b6633 environment —outdoor.