Zinc [ASTM-B] This specification covers requirements for electrodeposited zinc coatings applied to iron or steel Types, Test Period (Hours.) II, III, Type II. Sulphuric Acid Electrolyte. Standard. Class I- Non Dyed. Natural or Clear ASTM-B Type II. Colorless Chromate Conversion. Please Specify RoHS. Zinc Plating Finish Specification ASTM-B Type II With supplementary chromate treatment. Type III With supplementary colorless chromate treatment.
|Genre:||Health and Food|
|Published (Last):||16 January 2018|
|PDF File Size:||18.75 Mb|
|ePub File Size:||4.32 Mb|
|Price:||Free* [*Free Regsitration Required]|
Thickness can exceed that of fused tin and in deposit shows excellent corrosion resistance and solder ability. Zinc plating is usually considered a functional coating, not a decorative one. Our Barrel Plating line is fully automated and digitally astm-b633 type ii with special programs, and individual recipes to manage cleaning, li, and chromating operations.
But if you are looking for something indisputably blue, as opposed to clear with a possible slightly bluish cast, this probably requires dye. Class 1A For maximum protection from corrosion, for surfaces to be astmb-633 or left unpainted. Reasons such as off-topic, astm-b633 type ii, flames, illegal, vulgar, or students posting their homework.
Where maximum serviceability or astmb-633 properties are required, consult metal finisher for best alloy choice. By joining you are opting in to receive e-mail. I used it about a generation ago. Some of today’s proprietary trivalent chromium coatings are very thin and consequently will not generate a highly saturated color though.
Can anyone give me some direction on how to get the customer to accept going to clear. It would be “bright, blue” astm-b633 type ii that is, shiny and metallic but with a bluish rather than a yellowish cast.
Answer is based upon pre versions of B, Numeral indicates thickness in micrometers. Kaushik, The “Types” define astm-b633 type ii finishes to be done after the plating.
They share, however, the most basic of metal finishing requirements: Also, I found out that the casting is painted after plating. Regarding the question asked in letter ; Type II zinc plating vs. Corrosion resistance is good for coatings over. We are typs poor coverage on the as-cast surface of some steel castings using a yellow Zinc chromate. astm-b633 type ii
As the USA moved toward metric fasteners, for a while there was a move to dye them blue. This applies to all metals. Zstm-b633 barrel, station line enables us to process thousands astm-b633 type ii pounds of material every day.
Where extreme abrasion resistance is required do not seal as some softening is encountered. SC 4 very severe. How do you know astm-b633 type ii it is supposed to be Zinc Yellow or Zinc Clear? August 31, A.
Barrel Zinc – Finishes – Professional Plating Inc.
Ashm-b633 plater would like to go to a clear astm-b633 type ii, but our customer is under the assumption that the clear will not do astm-b633 type ii good a job with corrosion resistance and salt spray life. The Eng-Tips staff will check astm-b633 type ii out and take appropriate action. Thus, hardness can range from Vickers. You can get the same finish only for blue and black hex chrome with tri substitutes, but not for yellow or olive as of yet.
Going with clear will make it difficult to tell what is clear chromated zinc vs. Ken Vlach – Goleta, California. What do you say? II says “colored chromate coatings” meeting 96 hours of salt spray, and III says “colorless chromate conversion coatings” meeting 12 hours of salt spray. Solder ability is excellent. Type II is with colored chromate conversion treatment per appendix X2. Also for inside astm-b633 type ii and irregular shapes where assembly tolerances need uniformity provided by Electroless process.
Click Here to join Eng-Tips and talk with other members! Can be similar to stainless tyep in color, or astm-b633 type ii be dull gray or light gray almost white color. Could you explain this? Where corrosion resistance is important. Had very high luster in fused condition. Color is gray white in plated condition. All information presented is for general reference and does not represent a professional opinion nor the policy of an author’s employer.
Provides very hard ceramic type coating. Minimum weight Type II coatings. I astm-b633 type ii the exact same questions. Specification covers standard recommendation practice for cleaning and de-scaling stainless steel parts, equipment and systems.
High strength steels tensile strength greater than MPa shall not be electroplated. A Iron or steel with zinc electroplate. Has a low coefficient of thermal expansion-is magnetic.