Electrodeposited coating of zinc try using an acid zinc chloride bath and see if the casting covers. The below chart details the various types of coatings, thicknesses, and optional chromates. Zinc should be deposited directly on the base metal nickel is permissible undercoat if base metal is a corrosion resisting steel. Astm b633 19 standard specification for electrodeposited coatings of zinc on iron and steel. Electrodeposited coatings of zinc on iron and steel. Astm b633 standard specification for electrodeposited coatings of zinc on iron and steel. Zinc coated steel will not rust even when exposed by scratches because of the galvanic protection of the zinc. Astm b633, sc1, type iii plus a lubricated topcoat scope this specification covers electrodeposited zinc coatings as applied to steel, copper, brass, and bronze parts to protect them from corrosion. Now the new astm b633 20 edition is available in either paper format or pdf download. A discussion started in but continuing through 2018. Akron plating now offers rohs compliant, hexavalent free clear and yellow zinc chromates. Modification of astm b117 salt spray corrosion test and its correlation to field measurements of silver corrosion article pdf available in corrosion houston tx 683.
This durable finish is used by a variety of industries to economically extend a parts service life. Astm b633 march 1, 2019 standard specification for electrodeposited coatings of zinc on iron and steel this specification covers material and process requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion. For example, the thickness of the astm b633 fezn 5 coating is 0. Active standard astm b633 developed by subcommittee. Astm b63311 archives document centers standards forum. Astm international astm b63398 standard specification. Astm b633, standard specification for electrodeposited coatings of zinc on iron and steel, is a long time favorite for plating applications. Available colors are iridescent and black colorless chromate passivation gives corrosion resistance ability of 12 hours according to astm b until white spotsintended to parts used in a light corrosive environment indoor. So if you need to color match, you need to do it with a requirement for compliance with sample parts not a verbal description. Supplementary treatments shall be in accordance with recommended practice b the end user must decide when a part fails, at white rust corrosion the b633 98 has failed or red rust both the chromate and the zinc are gone exposing. Astm b633 astm b633 pdf astm b633 screw astm b633 98 type iii sc2 astm c1063 comply with astm a653 astm c 90 astm c 174 astm e 168 pdf astm e 16419 astm e8 astm c 3 pdf astm c 128 ntg astm e8 pdf astm c 117 astm e 140 astm e80 e8m astm c astm c 192 astm c 272 pdf astm c 794 pdf.
Jul 09, 20 astm b633, standard specification for electrodeposited coatings of zinc on iron and steel, is a long time favorite for plating applications. Astm b63398, standard specification for electrodeposited coatings of zinc on iron and steel, astm international, west conshohocken, pa, 1998. Astm b633 98e1 standard specification for electrodeposited coatings of zinc on iron and steel november 10, 1998 astm international 1. This demonstrates that zinc plating is relatively thin compared to hotdip. Astm b633 pdf astm b633 astm b633 screw astm b633 98 type iii sc2 astm c1063 comply with astm a653 astm c12 astm e 399 pdf astm a7 astm d 875 astm d 85900 astm c11 astm d 823 astm e 38690 astm e 303 astm e80 e8m astm d 746 astm c 989 astm d 88 astm b 488 pdf astm b 248 17 astm b633 astm b633 screw astm b633 98 type iii sc2 astm. Astm b63307 standard specification for electrodeposited. Download datasheet view specs density and specific gravity instruments b618930500 hb instrument hydrometer, 39 to 51 api, astm 5h go0829927 supplier. The coating is made according to demand, where the distribution is as follows. Astm b633 19 standard specification for electrodeposited. Astm b633 historical revision information standard specification for electrodeposited coatings of zinc on iron and steel astm b633 1998 edition superseded show complete document history. Zinc plate astm b633 thicknesses tolerance october 23, 2014. Do i continue referencing astm b633, even though it was written for.
White paper 10 ways to improve wiring harness manufacturing. Astm b633, standard specification for electrodeposited coatings of zinc on iron and steel, has just been updated. Type i as plated, type ii colored chromate, type iii colorless chromate. Standard specification for electrodeposited coatings. The astm f1941 specification covers several common electrodeposited coatings on threaded fasteners. High corrosion clear trivalent, x, x, up to 120 hrs, astm b 633 type v.
Our plater would like to go to a clear zinc, but our customer is under the assumption that the clear will not do as good a job with. Some of todays proprietary trivalent chromium coatings are very thin and consequently will not generate a highly saturated color though. Bright zinc plating closely resembles bright chromium. Astm b633 98 standard specification for electrodeposited. Astm a123, a153, and a767 as well as csa specification g 164. This is an technical revision to an essential plating spec, used throughout industry. Scribd is the worlds largest social reading and publishing site. Buckle is capable of withstanding a tensile load of 4000 lbs.
Corrosion resistance zinc plating industrial zinc electroplating. A591a591m specification for steel sheet, electrolytic zinccoated, for light coating weight mass applications. The following bibliographic material is provided to assist you with your purchasing decision. Most common specification for zinc plating is astm b633, where sc1. We are getting poor coverage on the ascast surface of some steel castings using a yellow zinc chromate. The end user must decide when wstm part fails, at white rust corrosion the chromate has failed or red rust both the chromate and the zinc are gone exposing the base metal. Phosphoric acid anodize astm d3933 br 127 astm d3933 98 conversion coating on aluminum chem film type i class 1a milc 5541 mildtl5541 type i class 3 chem film, hexavalent chrome free type ii class 1a type ii class 3 rohs compliant magnesium dichromate treatment dow 1 type i ams m 3171 mil m3171 dow 7 type iii dow 15 type iv dow 19. Until a very few years ago chromate conversion coatings were based on hexavalent chromium, and deposited a thick film that astm n633 relatively easy to dye.
Correctly specifying zinc plate astmb633 paintcoatings. B63398 standard specification for electrodeposited. Pdf modification of astm b117 salt spray corrosion test and. Steel parts requiring embrittlement relief after plating are baked according to industry.
The document covers material and process requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion. It does not cover electrodeposited zinccoated steel wire or sheets see specification a 591a 591m for sheets. Find astm b633 related suppliers, manufacturers, products and specifications on globalspec a trusted source of astm b633 information. The primary purpose of phosphate coating on zinc is to provide a paint base. Zinc plating forms a protective exterior barrier for iron, steel, or metal substrate. This specification establishes the requirements for electrodeposited zinc coatings applied to iron or steel articles for corrosion protection purposes. Astmb633 standard specification for electrodeposited. Electrodeposited coating of zinc all information presented is for general reference and does not represent a professional opinion nor the policy of an authors employer. Class 1a for maximum protection from corrosion, for surfaces astm b633 type ii be painted or left unpainted. Corrosion protection hot dip galvanizedastm a153 vs b633. Astmb633 historical revision information standard specification for electrodeposited coatings of zinc on iron and steel astmb633 1998 edition superseded show complete document history. Specifications thickness comments qqn290a class 1 grade e class 1 grade f class 1 grade g. Hello guys, i wanted to know if there is a tolerance for the astmb633 thickness classes sc1 5m, sc2 8m, sc3 12m, sc4 25m. This specification covers material and process requirements for electrodeposited zinc coatings applied to iron or steel articles to protect them from corrosion.
Colorless rohs compliance passivation gives corrosion resistance ability of 72 hours b633 85 to astm b until white spotsalso intended to parts used in a high corrosive environment outdoor. However, bright zinc does not have the permanence of surface appearance. Jan 12, 2016 astm b633, standard specification for electrodeposited coatings of zinc on iron and steel, is a long time favorite for plating applications. This plating is an economical way to provide corrosion resistance. B 633 98 e 1 standard specification for electrodeposited coatings of zinc on iron and steel 1 this standard is issued under the fixed designation b 633. Is there a maximum thickness limitation for zinc coating. Zinc plate per astm b63398 fezn5 sc1 mild, then clear. Astmb633 archives document centers standards forum. Astm b633 07 standard specification for electrodeposited coatings of zinc on iron and steel. Is there a maximum thickness limitation for zinc coating per. Astm b63315 archives document centers standards forum.
Not sure this is the best forum for this question but a search of this site for zinc plate showed posts in many forums with no obvious favourite. The current document is also astm e by inclusion of several recognized shrinkage or c categories and by elimination of the crack and hot tear categories except for one example of each of these discontinuity types. The new 2015 edition replaces the astm b633 20 edition which is now obsolete. This standard is issued under the fixed designation b 633. Zinc plate astmb633 thicknesses tolerance october 23, 2014. Correctly specifying zinc plate astm b633 correctly specifying zinc plate astm b633 kenat mechanical op 22 oct 08 12. This astm standard replaces astm b633 for electrodeposited threaded fastener coatings, since b633 was not written as a fastener specific standard. Astm b633 pdf astm b633 astm b633 screw astm b633 98 type iii sc2 astm c1063 comply with astm a653 astm c12 astm e 399 pdf astm a7 astm d 875 astm d 85900 astm c11 astm d 823 astm e 38690 astm e 303 astm e80 e8m astm d 746 astm c 989 astm d 88 astm b 488 pdf astm b 248 17. Many translated example sentences containing norma astm b633 englishspanish dictionary and search engine for english translations. Electrodeposited coating of zinc hi, i recently received 2 batches of parts from sstm separate platers using this specification. For annual book of astm standards volume information, refer to the standards document summary page on the astm website. Astm b633 astm b633 pdf astm b633 screw astm b633 98 type iii sc2 astm c1063 comply with astm a653 astm c 90 astm c 174 astm e 168 pdf astm e 16419 astm e8 astm c 3 pdf astm c 128 ntg astm e8 pdf astm c 117 astm e 140 astm e80 e8m astm c astm c 192 astm c 272 pdf astm c 794 pdf astm b633 pdf astm b633 screw astm b633 98.
The most common standard for zinc plating is astm b633, which has four. November 1998 standard specification for electrodeposited coatings of zinc on iron and steel. A number in parentheses indicates the year of last reapproval. The primary use of chromate finishes on zinc is to retard or prevent formation of white corrosion products on zinc surfaces.
B633 98 standard specification for electrodeposited coatings of zinc on iron and steel. I am not sure if the suggestions here were based on hypothetical or real sea. Materials hotdip galvanized to astm a153 class b have a zinc coating that is 15 times thicker than materials plated to astm b633 fezn 5. Find astm b633 products and abstract using the buildsite database. Astmb63398 corrosion screw free 30day trial scribd. Astm b and all other worldwide standards were written around the time when no one spoke about trivalent. Astm b633 standard specification for electrodeposited.