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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Chromate Conversion Coating

I don’t believe coating wt. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Not sure my question was to the point.

We test coating wt. Class 1A- Yellow For maximum protection against corrosion, painted or unpainted. 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.

Chromate Conversion Coating also commonly referred to as Chemical Film, Chem Film, Alodine or Iridite converts the surface properties of the substrate typically aluminum or magnesium as compared to plating which applies a coating onto the surface of the substrate.

Greg, it sure looks like it is available from ASTM at: It is asstm used for an undercoat for paint or adhesive applications due to the excellent bonding properties it provides.

Chromate Conversion Coating

Chromate conversion coatings are the most widely used coating for corrosion protection of Aluminum and Aluminum alloys sstm surface oxidation.

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. Link adtm Active This link will always route to the current Active version of the standard. Your Metal Finishing Solution. Yes, a rough correspondence between what comprises class 2 vs.

ASTM B Spec for Chromating Aluminum

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Those specs are somewhat similar, but I do not think there is any claim that they are “technically equivalent”. Chromate Conversion Coating also commonly referred to as Chemical Film, Chem Film, Alodine or Iridite converts the surface properties of the substrate typically aluminum or magnesium as compared to plating which applies a coating onto the surface of the substrate.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. It might be worth getting your customers to waive or except the requirement in writing, assuming your coupons are passing the SS test.

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. Thank you for your answer.

We get a small commission for maintaining their links, so we can keep them perpetually current Not sure my question was to the point. 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. Class 3- Clear For protection against corrosion where low electrical resistance is required. This abstract is a brief summary of the referenced standard.

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.

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 like to remove it from monthly testing. 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. Historical Version s – view previous versions of 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.

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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. We test coating wt. Class 3- Clear or Yellow For protection against corrosion where low electrical resistance is required. Yes, a rough correspondence between what comprises class 2 vs.

Link to Active This link will always route to the current Active version of the standard. Chromate conversion coatings are the most widely used coating for corrosion protection of Aluminum and Aluminum alloys minimizing surface oxidation.

Chromate conversion coatings are normally applied by dipping: Class 1A- Clear For maximum protection against corrosion, painted or unpainted.

Class 3- Clear or Yellow For protection against corrosion where low electrical resistance is required. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 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 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.

S October 11, A.

ASTM B-449 Spec for Chromating Aluminum

No other units of measurement are included in this standard. 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. It’s not possible to diagnose a finishing problem or the hazards of an operation via these pages.