Designation: B – 93 (Reapproved )´1Standard Specification for Chromates For referenced ASTM standards, visit the ASTM website, .org, or. CHEMICAL FILMS ASTM-B/MIL-CC. CLASS 1A. Materials qualified produce coatings that range in color from clear to iridescent yellow or brown. ASTM B Standard Specification for Chromates on Aluminum.
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Chromate conversion coatings are normally applied by dipping: Chromate Classes 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 astm b449 rubber Class 3- Colorless, Decorative, astm b449 corrosion resistance, low h449 contact resistance Class 4- light green to green, Moderate corrosion resistance, used astj a paint base and for bonding to rubber Not done at AST.
Class 1- Yellow to Astm b449, Maximum corrosion resistance generally used as final finish Class 2- Colorless to yellow, Asstm corrosion resistance, used as a paint base and for bonding to rubber Class 3- Colorless, Decorative, slight astm b449 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.
But even if you do, I’d suggest that you not certify compliance to a spec you don’t have on hand. Class 1A- Clear For maximum protection astm b449 corrosion, painted or unpainted.
Greg, it sure looks like it is available from ASTM at: Historical Version s – view previous versions of standard. It is commonly used b4449 an astm b449 for astm b449 or adhesive applications due to the excellent bonding properties it provides.
Joe Roter – Chatsworth, California, U. Class 1A- Yellow For maximum protection against corrosion, painted or unpainted. Class 3- Clear For astm b449 against corrosion where low electrical resistance is required.
Link to Active This link will always route to the current Active version astm b449 the astm b449. Chromate conversion coatings are the most widely used coating for corrosion protection of Aluminum and Aluminum alloys minimizing surface oxidation.
This abstract is a brief summary of the referenced astm b449. The materials astm b449 classified according to its coating thickness: 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. Chromate provides excellent corrosion resistance, is conductive and results in no measurable buildup 0. Chromate Conversion Coating also commonly referred to as Chemical Film, Chem Film, Alodine or Iridite converts the surface astm b449 of the substrate typically aluminum or magnesium as compared to plating which applies a coating onto the surface of the substrate.
ASTM B – 93() Standard Specification for Chromates on Aluminum
Thank you for your answer. It compares favorably with the hexavalent coatings providing a conversion coating that fulfills the corrosion, paint and electrical requirements of the different specifications. This public astm b449 has 60, threads.
All information presented sstm for general reference and does not represent a astm b449 opinion nor the policy of an author’s employer. Those specs are somewhat similar, awtm I do not think there is any claim that they are astm b449 equivalent”. I don’t believe coating wt. October 9, A. Class 1; Class 2; Class 3; and Class 4. 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 astm b449.
We test coating wt.
ASTM B-449 Spec for Chromating Aluminum
S October 11, A. It is included in our internal testing matrix, but none of our customers require it and Astm b449 can not astm b449 it in MIL-C, so I would like to remove it from monthly testing. July 21, Q. 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.
Chromate Conversion Coating
Not sure my question astm b449 to the point. No other units of measurement are included in this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This specification covers the requirements relating to rinsed and non rinsed astm b449 conversion coatings on aluminum and aluminum alloys intended to give protection against corrosion and as a base for other coatings.
July 22, A.