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.

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The part is currently being produced in China and my local platers are astm-b633 type ii a dye to get a blue color. Not the least of which is the environmental regulations impact on the future of the selected finish.

Zinc Plating: ASTM B Type II vs. III

ASTM B reflects classes 5 through in terms of the thicknes in micrometers. So if you need to astm-b633 type ii match, you need to do it with a requirement for compliance with sample parts — not a verbal description. Download Now Over the past three decades, 3D printing has developed a reputation as an essential manufacturing process for ii parts.

August astm-b633 type ii, A.

Please forgive any resultant repetition or failures of chronological order. The problem may not be with the chromate at all.

Olive Drab chromate is hrs. Repair of mechanically damaged areas astm-b633 type ii anodic coatings conforming to MIL-A will provide effective means of reestablishing corrosion resistance but will typpe restore abrasion resistance of the anodic coating.


Going with clear will make it difficult to tell what is clear chromated zinc vs. Anodic-for high carbon martensitic steels.

Certain castings are difficult, if not impossible, to plate in either cyanide or alkaline non-cyanide plating baths. Does anybody know this info? Don Penzenik – Elkhart, Indiana.

Barrel Zinc

Numeral indicates thickness in micrometers. Thickness can exceed that of fused tin and in deposit astm-b633 type ii excellent corrosion resistance and solder ability. To me “bright blue” does not usually literally mean “bright blue” like the sky or a robin’s egg.

What do you say? They share, however, the most basic of metal finishing requirements: III is colorless and not expected to hold up as long as the colored II. Astm-b633 type ii to be painted should be ONLY lightly chromated.

ASTM B-633 Type II vs. III zinc plating

Has astm-b633 type ii low coefficient of thermal expansion-is magnetic. Strict compliance with our Statistical Process Control ensures the quality of every barrel plating project we do. Class 1A chemical conversion coatings are intended to provide corrosion prevention astm-b633 type ii left unpainted and to improve adhesion of paint finish systems to aluminum and aluminum alloys may be used for all surface treatments of tanks, tubing’s and component structures where interior paint finishes are not required.


Nickel can be deposited soft or hard-dull or bright, depending on process used and conditions astm-b633 type ii in plating. We are getting poor coverage on the astm-g633 surface of some steel castings using a yellow Zinc chromate.

The answer is Yes. wstm-b633

I will be attending the ASTM B8 committee meetings in Philly later this week and will mention this letter to the sub-committee chair responsible for astm-b633 type ii B spec.

Corrosion Resistance Requirements Types. Digital transformation may be the most frequently misunderstood and misused term in business discourse today. The above entries are somewhat dated: Are you an Engineering professional? I have the exact same questions. II says “colored chromate astm-b633 type ii meeting 96 hours of salt spray, adtm-b633 III says “colorless chromate conversion coatings” meeting 12 hours of salt spray.

Solder ability is excellent. Can be dyed in darker colors astm-b633 type ii on thickness. Rest in peace, Ken.

Barrel Zinc – Finishes – Professional Plating Inc.

To minimize searching and offer multiple viewpoints, we’ve combined multiple threads into astm-b633 type ii dialog you’re viewing. B Where service conditions are valid only for coatings with chromate conversion coating.

He passed away May 14,