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

It definitely implies Hex Chrome. Numeral indicates thickness in micrometers. Some of today’s proprietary trivalent chromium coatings are very thin and consequently will not generate a highly saturated color though. Can be similar to stainless steel in color, or can be dull gray or light gray almost white color. Is there any colour difference OR is there any Salt spray difference?

The coating is made according to demand, where the distribution is as follows: For urgent projects, we can turn the work around even faster with no loss of quality. The designer and engineer must take into account several considerations to stay at the forefront of the finish potential.

Regards, Ted Mooney, P.

Barrel Zinc – Finishes – Professional Plating Inc.

August 31, A. At Professional Plating we are fully committed to meeting your needs for fine quality plating and prompt service.


Can be dyed practically any color or shade. To prevent formation of case during. Supplementary treatments shall be in accordance with Recommended Practice B As much as the last layer of the passivation is thin the electrical resistivity is yype. There is a nickel finish for almost any need. Electrical charasteristics As much as the last layer of the passivation is thin the electrical resistivity is low.

Can anyone give me some direction on how to get the customer to accept going to clear.

SC 4 very severe — Exposure to harsh conditions such as moisture, cleaners, saline solutions, and extreme wear. No it does not imply that. Solder ability is excellent.

The black layer has also additional target —prevention of light reflection from the aetm-b633 and is used for optical parts. If a bright finish is desired to be used in lieu of fused tin, specify Bright Tin plate.

Barrel Zinc

Sstm-b633 does not cover zinc-coated wire or sheets. Kaushik, The “Types” define supplementary finishes to be done after the plating. To calculate it is very difficult, as the plating is a few molecules thick. Ray Kremer Stellar Solutions, Inc. Put tyoe chromate on light. Answer is based upon pre versions of B, Anodic-for high carbon martensitic steels.

Corrosion resistance is a function of thickness. All electroplated parts M. 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 —outdoor. Nickel can be deposited asttm-b633 or hard-dull or bright, depending on process used and conditions employed in plating. Mark Hollenbeck alloys – Muskegon, Michigan A.


Inspection difficulties may arise with clear coatings astm-b63 visual inspection does not reveal the presence of a coating. Zinc and Zinc alloys, such as zinc-nickel will surely play a more significant role as metals such as Cadmium are destined for the elements’ Valhalla. Can be used as an electrical insulation coating.

Also, some yellow chromates are clear w. To determine the nature of accuracy or revision level please verify above data with current releases: For steels containing large amounts 0.

Zinc plating is usually considered a functional coating, not a decorative one.

Don Penzenik – Elkhart, Indiana. With colored chromate conversion coatings. To me “bright blue” does not usually literally mean “bright blue” like the sky or a robin’s egg. Provides very hard ceramic type coating. This applies to all metals.

Perhaps some confusion with Service Condition SC 2 moderatewhich indicates a minimum zinc thickness of 8 microns and is commonly clear chromated Type III. Where extreme abrasion resistance is required do not aatm-b633 as some softening is encountered.