ASTM B633 2015 Released

ASTM B633, “Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel,” has just been updated.  The new 2015 Edition replaces the ASTM B633 2013 Edition which is now obsolete.  This is an technical revision to an essential plating spec, used throughout industry.  Here at Document Center we’ve sold hundreds of copies of the document over the years.  You’ll want a copy if you use this specification.

What exactly does ASTM B633 2015 address?  The specification covers the materials and processes to use for the electrodeposition of zinc coatings on iron or steel goods to protect them from corrosion.  It also includes information on the various tests you’ll use to confirm thickness, adhesion, corrosion resistance and so on.  This means the coating requirements and the sampling process (including specimen preparation) are part of the publication as well.

What’s new in the ASTM B633 2015 Edition?  An additional test has been added to give you another option when it comes to determining the thickness of the coating.  This means that there is one more ASTM standard included in the referenced document section as well.

How can you get your copy of this new ASTM specification?  Choose an authorized distributor of the ASTM Standards like Document Center Inc.  You can go directly to our Document Center web store at and place your order online.  Here is the link directly to the order page for ASTM B633 — It’s available in both paper format and for pdf download.

Want to provide your company with multi-user access to this and other ASTM standards?  Contact Document Center for more information on Standards Online, our online subscription service.  You can reach us by phone (650-591-7600) or email (  We have been selling ASTM standards since the 1980’s.  So make us your Standards Experts!

New ASTM B633 2013 Edition released for Electrodeposited Zinc Coatings

ASTM B633, “Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel,” is a long time favorite for plating applications.  Now the new ASTM B633 2013 Edition is available in either paper format or pdf download.  The document covers material and process requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion.

You’ll find extensive changes in the ASTM B633-13 Edition from the previous 2011 Edition.  These updates center on the addition of RoHS requirements, added to limit the exposure of workers and others from exposure to toxic metals.  This means the addition of two additional types, V and VI, to permit non-chromate passivate treaments for the replacement of hexavalent chromium.

Most changes occur in the first 3 pages of the 6 page document.  For example, in the referenced documents section, there’s now the addition of the ASTM F1941 and ASTM F1941M, the inch and metric versions of “Specification for Electrodeposited Coatings on Threaded Fasteners.”

As you can see, RoHS – The Restriction of Hazardous Substances Directive – is having a profound impact on plating practices.  This new ASTM publication is another instance of industry working hard to promote safer processes as led by legislative direction.

Document Center customers have been purchasing the ASTM publications from us since the 1980’s.  You can get them easily by using our web store,  Or you can contact us by phone (650-591-7600), fax (650-591-7617) or email (

Not only do you get the standard you need, but you will receive timely update information when the publication is revised.  This added feature helps many of our customers keep their documentation in good order.

And now, when you register at our website, you’ll be able to see a list of the standards you’ve ordered from us.  They’re displayed two ways.  One is a list with the most recent documents placed at the top.  The other is by the order date.  Items that have changed since you purchased them are highlighted for easy identification.

We hope you’ll take advantage of the many benefits of using Document Center for your conformance documentation needs.  We’re your Standards Experts!

New 2011 Edition for ASTM B633, Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

ASTM B633, “Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel,” has been updated to the new 2011 Edition.  This is one of Document Center’s best selling ASTM standards and is an essential Zinc Plating specification.  This specification covers requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion.

The coatings covered are to be provided in four standard thickness classes in the as-plated condition or with one of three types of supplementary finishes. The surfaces of the articles can under go pre-plating basis metal cleaning, pre- and post-coating treatment for reducing the risk of hydrogen embrittlement, and reactivation and supplementary treatments.

Coatings should be sampled, prepared, tested and conform accordingly to specified requirements as to appearance (luster and workmanship), thickness, adhesion, corrosion resistance, and hydrogen embrittlement.

ASTM B633 replaced the now-obsolete QQ-Z-325, the federal specification for Electrodeposited Zinc Coating.  It does not cover electrodeposited zinc-coated steel wire or sheets (originally  ASTM A591/A591M covered sheets, but it was replaced in 2005 with ASTM A879/A879M).

This new ASTM specification, all current ASTM standards, and many of the obsolete revisions not available at ASTM are all on our Document Center website,  Feel free to contact us by phone (650-591-7600), fax (650-591-7617) or email ( should you prefer.

The Plating Spec Poster – A handy tool for plating and coating specialists

Techplate’s Plating and Anodizing Specifications Chart is a handy wall chart developed to summarize a variety of frequently referenced plating specs.

The 2006 Edition covers a wide variety of metals and coatings.  Various classes are covered, along with thicknesses, and applications.  It’s 18 inches wide by 24 inches high, so it’s easy to post and reference.

Here is a list of some of the coatings covered and specs that apply:

Anodic Coatings MIL-A-8625
Black Chromium Plating MIL-DTL-14538
Black Oxide Coating MIL-DTL-13924 and AMS-2485
Cadmium Plating AMS-2700 and ASTM-B766
Chemical Conversion Coatings MIL-DTL-5541
Chromium Plating AMS-2460
Chemical Finish Black MIL-F-495
Copper AMS-2418
Electroless Nickel Coatings AMS-2404 and AMS-C-26074
Electropolish ASTM-B912
Gold Plating ASTM-B488 and AMS-2422
Lubricant, Solid Film MIL-PRF-46010
Magnesium Anodic Treatment AMS-M-45202 and ASTM-D1732
Magnesium Chromic Treatment AMS-M-3171
Nickel Coatings AMS-QQ-N-290 and AMS-2403
Passivation Treatments AMS-2700
Light Phosphate Coating TT-C-490
Heavy Phosphate Coating MIL-DTL-16232
Salt Bath Nitride AMS-2753
Silver Plating ASTM-B700
Sulfamate Nickel MIL-P-27418
Tin Coatings ASTM-B545
Tin Lead Plating AMS-P-81728
Vacuum Cadmium Plating AMS-C-8837
Zinc ASTM-B633
Zinc Alloy Plating ASTM-B840 and ASTM-B841