ASTM B Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel. Buy ASTM B SPECIFICATION FOR ELECTRODEPOSITED COATINGS OF ZINC ON IRON AND STEEL from SAI Global. ASTM B Type II and III zinc chromate plating Q&A’s. In my opinion a Mil-C- [link is to free spec at Defense Logistics Agency, ] plating.

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Materials and Manufacture 6. Regarding the question asked in letter ; Type II zinc plating vs. Ken Vlach – Goleta, California. Zinc coating with phosphate passivation. It does not cover electrodeposited zinccoated steel wire or sheets see Speci?

What do you say? Our Zinc coating is carried out according to: It still will have Hex Chrome. I’ve seen this done less commonly on chromated zinc plating than on chromated aluminum. Subject the b33 samples to the salt spray test; the length of time to be applicable for the type of supplementary coating shall be in accordance with the requirements of 7. The Zinc coating on the steel does not last shiny for long, and so a further thick layer coating is added, called passivation.

All I need to know is what color the types are. That seems a bit discretional to me.

BBBBand B For example, a cold-rolled steel surface shall not be used to represent a hot-rolled steel surface. Please forgive any resultant repetition or failures of chronological order.

Zinc Plating: ASTM B Type II vs. III

To calculate it is very difficult, as the plating is a few molecules thick. Surfaces left-bare should be heavily chromated.

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. Colorful chromate passivation gives corrosion resistance ability of 96 hours according to ASTM B until white spots-intended to parts used in a high corrosive environment dree.


Does anybody know this info?

It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages. The chromate, passivate, or aastm III is colorless and not expected to hold up as long as the colored II. While the conditions of exposure and uses of electroplated metal are so varied that it is not de?

ASTM B-633 Type II vs. III zinc plating

Unless a need can be demonstrated, separately prepared specimens shall not be used in place of production items for nondestructive and visual examinations. No, other colors may not be available if my presumption is right.

But if you are looking for something indisputably blue, as opposed to clear with a possible slightly bluish cast, this probably requires dye. NOTE 4—The satm tolerance of most threaded articles, such as nuts, bolts, screws, and similar fasteners with complementary threads, normally does not permit the application of a coating thickness much greater than 8.

It definitely implies Hex Chrome. Yellow chromate should get 96 hrs to failure. The inspection b6633 is then classi? The values are only relative, since individual studies in various parts of the world have resulted in? Test Method B contains several plans and also gives instructions for calculating plans to meet special needs. Decorative charastreistics The exterior visual determined according to last layer.

Olive Drab chromate is hrs. Don Penzenik – Elkhart, Indiana. Current edition approved Jan. The procedure is known as sampling inspection.

Also, some yellow ast are clear w. The electroplated article shall be clean and free of damage. Last previous edition approved in as B — 98e1. As a result of large-scale and long-range tests conducted by ASTM and other organizations, there is excellent information on the corrosion behavior of zinc and zinc coatings.


The rust not only harms the aesthetically smooth look, but also its mechanic needs. This standard is subject to revision at any time by the b63 technical committee and must be reviewed every? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Go to main content. To me “bright blue” does fee usually literally mean “bright blue” like the sky or a robin’s egg. Test Method B provides a default plan if one is not speci? As much as the last layer of the passivation is thin the electrical resistivity is low. This applies to all metals. Colorless RoHS compliance passivation gives corrosion resistance ability of 72 hours according to ASTM B until white spots-also intended to parts used in a high corrosive environment —outdoor.

B — 07 Standard Speci? Colorful RoHS compliance rfee gives corrosion resistance ability of hours according to ASTM B until white spots-also intended to parts used in a high corrosive environment —outdoor. A Blue with pale yellow is the best replacement for yellow as of now. Is there any colour difference OR is there any Salt spray difference?

How do you know if it is supposed to be Zinc Yellow or Zinc Clear?

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