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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Referenced Documents ast separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Advanced Surface Technologies extensive experience with the chromate process enables us to effectively process cast and all the different wrought alloys with alloy specific pre-treatment chemistries. July 22, A. Chromate conversion coatings are normally applied by dipping: It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages.

Not sure my question was to the point.

Chromate Conversion Coating

Those specs are somewhat similar, but I do not think there is any claim that they are “technically equivalent”. We get a small commission for maintaining their links, so we can keep them perpetually current Greg, it sure looks like it is available from ASTM at: 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.

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 4- light green to green, Moderate corrosion resistance, used as a paint base and for bonding to rubber Not done at AST.

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It aatm informational only and not an official part xstm the standard; the full text of the standard itself must be referred to for its use and application.

Your Metal Finishing Solution. Link to Active This link will b49 route to the current Active version of the standard. Thank you for your help. 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.

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.

Class 3- Clear For protection against corrosion where low electrical resistance is required. Joe Roter — Chatsworth, California, U. 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 would b49 to remove it from monthly testing. Greg, it sure looks like it is available from ASTM at: Class 1; Class 2; Class 3; and Class 4.

Advanced Surface Technologies extensive experience with the chromate process enables us to effectively process cast and all the different wrought alloys with alloy specific pre-treatment chemistries. S October 11, A. Class 1; Class 2; Class 3; and Class 4. Chromate conversion coatings are the most widely used coating for corrosion protection asgm Aluminum and Aluminum alloys minimizing surface oxidation.

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

We test coating wt. Asm specification covers the requirements relating to rinsed and non rinsed chromate conversion coatings on aluminum and aluminum alloys intended to give protection against corrosion and as a base for other coatings.

This specification covers the requirements relating to rinsed and non rinsed chromate conversion coatings on aluminum and aluminum alloys intended to give protection against corrosion and as a base for other coatings. Class 1A- Yellow 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. No other units of measurement are included in this standard.

Yes, a rough correspondence between what comprises class 2 vs. Chromate provides excellent corrosion resistance, is conductive and results in no measurable buildup 0.

It is asstm used for an undercoat for paint or adhesive applications due to the excellent bonding properties it provides.