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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Mark Hollenbeck alloys – Muskegon, Michigan A. ASTM B tyle all other worldwide standards were written around the time when no one spoke about trivalent. Zinc coating with phosphate passivation. As the USA moved toward metric fasteners, for a while there was a move to dye them blue. Has a low coefficient of thermal expansion-is magnetic.

II says “colored chromate coatings” meeting 96 hours of salt spray, and III says “colorless chromate conversion coatings” meeting 12 hours of salt spray. Supplementary treatments shall be in accordance with Recommended Practice B Color will vary from light tan to black depending on alloy and thickness. B Where service conditions are valid only for coatings with chromate conversion coating.

To prevent formation of case during. I need to specify platings that do not contain Hexavalent Chromium for parts that will be used in the automotive industry.

Zinc Coating

No it does not imply that. III is colorless and not expected to hold up as long as the colored II. The type of passivation is determined according to the required characteristics, and tgpe divided into groups:. Until a very few years ago chromate conversion coatings were based on hexavalent chromium, and deposited a thick film that was relatively easy to dye. Class 1A For maximum protection typ corrosion, for surfaces to be painted or left unpainted. Sorry, but if you need one particular look, you must go through the ugly process of maintaining sample boards with acceptable vs.


Color is gray white in plated condition. Color will vary with alloy. Zinc plated components vary from one industry to aastm-b633. Zinc ASTM-B This specification covers requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion.

Strict compliance with our Statistical Process Control ensures the quality of every barrel plating project we do. The exterior visual determined according to last layer.

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. Certain castings are difficult, if astm-633 impossible, to plate in either cyanide or alkaline non-cyanide plating baths. Does anybody know this info? It would be “bright, blue” — that is, shiny and metallic but with a bluish rather than a yellowish cast. Soft, but is very ductile.

Don Penzenik – Elkhart, Indiana. Corrosion Resistance Wstm-b633 Types. But if you astm-bb633 looking for something indisputably blue, as opposed to clear with a possible slightly bluish cast, this probably requires dye.

High strength steels tensile strength greater than MPa shall not be electroplated.

All I need to know is what atsm-b633 the types are. Can be dyed practically any color or shade. Can be used as an electrical insulation coating. Thank you for your hard work which the finishing world continues to benefit from. Is this process done in the United States, and if so by whom? Our barrel, station line enables us to process thousands of pounds of material every day.


It’s not possible to diagnose a finishing astm-v633 or the hazards of an operation via these pages. Olive green and Black passivation is thick and has high electrical resistance. For urgent projects, we can turn the work around even faster with no loss of quality.

Barrel Zinc – Finishes – Professional Plating Inc.

Also for inside dimensions and irregular shapes where assembly tolerances need uniformity provided by Electroless process. Our Zinc coating is carried out according to: Decorative charastreistics The exterior visual determined according to last layer. All parts with ultimate tensile strength M. Anodic-for high carbon martensitic steels. The answer is Yes. Going with clear will make it difficult to tell what is clear chromated zinc vs. To me “bright blue” does not usually literally mean “bright blue” like the sky or a robin’s egg.

Specification covers standard recommendation practice for cleaning and de-scaling stainless steel parts, equipment and systems. Is there any colour difference OR is there any Salt spray difference?

With this exceptional capacity we can provide rapid turnaround time.