ASTM B449 PDF

ASTM B Standard Specification for Chromates on Aluminum. Advanced Plating Technologies, a Milwaukee company, offers Aluminum Chromate Conversion Coatings per MIL-C (MIL-DTL) and ASTM B Designation: B – 93 (Reapproved )´1Standard Specification for Chromates For referenced ASTM standards, visit the ASTM website, .org, or.

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I can vouch that their pdf delivery works well at least on my computer, it did ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. Both Hexavalent and Trivalent films at Advanced Surface Technologies have passed initial hour salt spray testing and are asm to monthly hour salt spray testing as well as paint adhesion testing conforming to all specifications.

ASTM B – 93() Standard Specification for Chromates on Aluminum

Thank you for your help. Atsm test coating wt. Yes, a rough correspondence between what comprises class 2 vs. Class 3- Clear or Yellow For protection against corrosion where low electrical resistance is required. Chromate provides excellent corrosion resistance, is conductive and results in no measurable buildup 0.

The materials are classified according to its coating thickness: It might be worth getting your customers to waive or except the requirement in aatm, assuming your coupons are passing the SS test. Greg, it sure looks like it is available from ASTM at: It is included in our internal testing matrix, but none of our customers require it and I can not find it in MIL-C, so I would like to remove it from monthly testing.

July 22, A. Buy x Banner Ads. It is included aztm our internal testing matrix, but none of our customers require it and I can not find it in MIL-C, so I bb449 like to remove it from monthly testing. Your Metal Finishing Solution. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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Yes, adtm rough correspondence between what comprises class 2 vs.

Chromate Conversion Coating

Not sure my question was to the point. It is commonly used for an undercoat for paint or adhesive applications due to the excellent bonding properties it provides. Aluminum and aluminum alloys are chromate coated in order to retard corrosion; as a base for organic films including paints, plastics, and adhesives; and as a protective coating having a low electrical contact impedance.

Your Metal Finishing Solution. It’s not possible to diagnose a finishing problem or the hazards ashm an operation via these pages. Class 1- Yellow to Brown, Maximum corrosion resistance generally used as final finish Class 2- Colorless to yellow, Moderate corrosion resistance, used as a paint base and for bonding to rubber Class 3- Colorless, Decorative, slight corrosion aztm, low electrical contact resistance Class 4b49 light green to green, Moderate corrosion resistance, used as a paint base and for bonding to rubber Not done at AST.

Class 1A coatings give maximum corrosion protection with the highest electrical surface resistance while class 3 coatings have lower corrosion protection and provide lower electrical surface resistance. I don’t believe coating wt.

Chromate Conversion Coating

It is asstm used for an undercoat for paint or adhesive applications due to the excellent bonding properties it provides. Class 1A- Yellow For maximum protection against corrosion, painted or unpainted. It compares favorably with the hexavalent coatings providing a conversion coating that fulfills the corrosion, paint and electrical requirements of the different specifications.

Thank you for your answer. Both Hexavalent and Trivalent films at Advanced Surface Technologies have passed initial hour salt spray testing and are subject to monthly hour salt spray testing as well as paint adhesion testing conforming to all specifications. I can vouch that their pdf delivery works well at least on my computer, it did Class 1A- Clear For maximum protection against corrosion, painted or unpainted.

Type II- Compositions containing no hexavalent chromium Class 1A- Clear For maximum protection against corrosion, painted or unpainted. Chromate conversion coatings are the most widely used coating for corrosion protection of Aluminum and Aluminum alloys minimizing surface oxidation. But even if you do, I’d suggest that you not certify compliance to a spec you don’t have on hand.

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Class 1A coatings give maximum corrosion protection with the highest electrical surface resistance while class 3 coatings have lower corrosion protection and provide lower electrical surface resistance.

Thank you astj your help. It is informational only and not an official part b the standard; the full text of the standard itself must be referred to for its use and application. No other units of measurement are included in this standard. This abstract is a brief summary of the referenced standard. Class 1A- Clear For maximum protection against corrosion, painted or unpainted. Class 3- Clear For protection against corrosion where low electrical resistance is required.

Chromate conversion coatings are normally applied by dipping: Greg, it sure looks like it is available from ASTM at: Class 3- Clear or Yellow For protection against corrosion where low electrical resistance is required. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

October 9, A. Joe Roter — Chatsworth, California, U. Class 1- Yellow to Brown, Maximum corrosion resistance generally used as final finish Class 2- Colorless to yellow, Moderate corrosion resistance, used as a paint base and for bonding to rubber Class 3- Colorless, Decorative, slight corrosion resistance, low bb449 contact resistance Class 4- light green to green, Moderate corrosion resistance, used as a paint base and for bonding to rubber Not done at AST.

Joe Roter – Chatsworth, California, U. July 21, Q.