ASTM E478 PDF

Published September Origi- nally approved in Last previous edition approved in as 3. E – 89a (). Annual Book of ASTM Standards. Buy ASTM E TEST METHODS FOR CHEMICAL ANALYSIS OF COPPER ALLOYS from SAI Global. These test methods for the chemical analysis of metals and alloys are primarily intended as referee methods to test such materials for.

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Store in a tightly sealed plastic bottle in a dark place. Gauze cathodes are recommended, and shall be made preferably from mesh gauze woven from astmm approximately 0. No other units of measurement are included in this standard.

ASTM E – 08() Standard Test Methods for Chemical Analysis of Copper Alloys

A spiral anode of this description will have a surface area of 9 cm 2. Aastm over-all height of the cathode should be approximately mm. Wash the cover and walls of the beaker, dilute to mL, and heat to dissolve salts.

Cover the beaker with a plastic cover and allow the sample to dissolve. Both areas are exclusive of the stem. Spiral anodes should be made from 1. Add to the beaker the weight of copper purity, Your Alert Profile lists the documents that will be monitored. Insert the electrodes into the solution, cover with a pair of split cover glasses, and electrolyze overnight at a current density of 0. Register for a trial account. Need more than one copy? Cool, add 5 g of potassium iodide KIand stir until the KI is dissolved.

The astj is then stripped from the organic phase as the ammonia complex, which is further treated with potassium cyanide to complex bivalent metals as well as the zinc.

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Boil gently until the excess bromine is removed. Platinum gauze anodes should be made of the same material and of the same general design as platinum gauze cathodes. Transfer the beaker to the magnetic stirring apparatus and titrate with EDTA solution to a pure blue end wstm. After the blue color due to copper has disappeared, wash the cover glasses, electrodes, and the sides of the beaker, and continue the electrolysis until deposition of the copper zstm complete, as indicated by failure to plate on a new surface when the level of the solution is raised.

For low levels of lead, expanded scale readout is advisable. Boil until oxides of nitrogen have been expelled, and cool. Your consent to our cookies if you continue to use this website. Significance and Use These test methods for the chemical analysis of metals and alloys are primarily intended as referee methods to test such materials for compliance with compositional specifications.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Tin-copper alloy Kennecott 3.

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ASTM E478 – 08(2017)

The solution is stable for several months when stored in plastic or borosilicate glass bottles. Dilute the solution to mL and proceed as directed in Dilute to mL. AAB 1 2 Discard the organic layer. Cover the beaker with a raised cover aatm, and evaporate the solution to a volume of 2 to 3 mL. Contamination of the calibration or test solutions by halides may lead to the loss of silver. A number in parentheses indicates the year of last reapproval.

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Aluminum is chelated with an excess of a standard solution of disodium ethylenedinitrilo tetraacetate EDTA and then determined by back-titration with standard zinc solution. Add 50 mL of hot water and, if the solution is clear, proceed as described in If the minimum requirements are not met with the selected calibration solutions, do not use this method until the desired stability is obtained. Using the test cell, take the photometric readings of the calibration solutions.

E Standard Terminology Relating to Metallography. Cool to room temperature. Click here to download full list of books. Quickly remove the cathode, rinse it in water, and then dip into two successive baths of ethanol or methanol. Avoid adding excessive amounts of formaldehyde. Add 5 mL more of diethyldithiocarbamate solution to the separatory funnel and mix.

If dissolution is difficult, add 0. Allow the layers to separate; then draw off the lower aqueous layer into a second separatory funnel. Using a pH meter, check the pH; if it is not between 6. Store in a tightly closed polyethylene dropping bottle. You may delete a document from your Alert Profile at any time.

Add HF as needed to decompose high-silicon alloys. Copper-zinc-nickel NIST a 0. Heat until dissolution is complete and then boil atm solution for 2 to 3 min. Allow the layers to separate. Axtm measurement is made at approximately nm. Bronze ounce metal NIST d,