ASTM B194 PDF

ASTM D ASTM B This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version of the standard as published by ASTM is to be considered the official document.

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ASTM D ASTM B This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate.

In all cases only the current version of the standard as published by ASTM is to be considered the official document. Designation: B — 01e1 Standard Speci? A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. The following alloys are speci? Current edition approved Oct. Published December Originally published as B — 45 T.

Last previous edition B — C shall be the alloy furnished whenever Speci? The values given in parentheses are mathematical conversions to SI units, which are provided for information only and not considered standard. 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.

Referenced Documents 2. General Requirements 3. Terminology 4. Ordering Information 5. Chemical Composition 6. Limits for unnamed elements may be established, by agreement between manufacturer or supplier and purchaser. When all elements in Table 1 are analyzed, their sum shall be Temper 7. The standard tempers of product are as designated in Table 2, Table 3, and Table 4.

Mechanical Property Requirements 8. Precipitation heat-treatment parameters for Table 2 and Table 3 are shown in Section Grain Size 9. The determinations are made on the separate samples and in a plane perpendicular to the surface and perpendicular to the direction of rolling. Grain Count C No. A Standard designations de? C See Appendix X1. D Elongation requirement applies to material 0. E The thickness of material that may be tested by use of the Rockwell hardness scales is as follows: B Scale Hardness values shown apply only to direct determinations, not converted values.

Grain count shall be determined in a plane perpendicular to the surface and perpendicular to the direction of rolling. Bend-Test Requirements To pass the bend test, at least four specimens out of? Precipitation Heat-Treatment For the purpose of determining conformance to speci? Other heat treating temperatures and times may be preferred for end products of this material. The mechanical requirements of Table 3 do not apply to such special heat treatments.

Further thermal treatment is not normally required. Sampling Specimen Preparation Specimens shall be precipitation heat-treated after cutting and prior to testing. Precipitation heat-treatment parameters for these bend tests shall be in accordance with See E The thickness of material that may be tested by use of the Rockwell Hardness scales is as follows: C Scale F The upper limits in the tensile strength column are for design guidance only.

Test Methods Keywords It is assumed that all who use these test methods will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory. The apparatus, standard solutions, and certain other reagents are referred to by number and shall conform to the requirements prescribed in Practice E Exercise care to prevent contact of beryllium-containing solutions with the skin.

Especially avoid the inhalation of any beryllium-containing substance, either as a volatile compound or as a? The proper precautions are to be observed in the disposition of beryllium-containing residues, especially ignited oxide.

A small amount of? Copper is electrolytically deposited on a tared platinum cathode. Copper remaining in the electrolyte is determined by atomic absorption spectrophotometry.

Cool and transfer to a 2-L volumetric? Add mL of nitric acid HNO3. Cool, dilute to volume, and mix. Add 20 mL of the acid mixture. Cover the beaker and allow to stand until dissolution is nearly complete. Cool, transfer into a 1-L volumetric?

Add 50 mL of the acid mixture to each? These solutions are equivalent to 0. Add 50 mL of the mixed acid, cover the beaker, and allow to stand until the reaction subsides.

Cool and wash down cover glass and inside of beaker. Add 1. Cover the beaker with a pair of split cover glasses and electrolyze at a current density of about 0. Should copper plate-out on the newly exposed cathode surface, dilute a second time and continue electrolysis for an additional 15 min. Copper deposition shall be considered completed, when no copper is deposited on a newly exposed surface.

Rinse the cathode in a water bath and then dip in two successive baths of ethanol or acetone. Ignite the burner and aspirate water until the instrument reaches thermal equilibrium. When a stable response is obtained, record the readings. Aspirate the test solutions and record their absorbance.

Aspirate water between samples to? Repeat all measurements a minimum of two times. Obtain the net absorbance for each calibration solution by subtracting the average absorbance for the zero-calibration solution from the average absorbance of each of the other calibration solutions.

This method may be used, provided additional calibration solutions are analyzed as samples to test for precision and linearity.

Should the instrument be equipped for multi-point calibration, make sure that several additional solutions still are analyzed to ensure that error has not been introduced by the curve-? The absorption of the resonance line energy speci? Instrument response for each analyte element must be adequate to permit an estimation of analyte concentration to within 0.

Cover with mL of water. Cover the beaker and cautiously add mL of nitric acid HNO3 in small increments. Allow to stand until dissolution is nearly complete. Boil to complete dissolution and expel brown fumes.

Cool, transfer the solution into a 1-L volumetric? Add 20 mL of water and cover with a watch glass. Boil to expel the brown fumes. Rinse the watch glass and inside of the beaker with water. Transfer the solution into a 1-L volumetric? Cautiously add 35 mL of HNO3 in small increments. Add two drops of HCl after the?

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Historical Version s - view previous versions of standard. More B This specification establishes the requirements for plates, sheets, strips, and rolled bars of copper-beryllium alloy with Copper Alloy UNS Nos. C and C Materials shall be processed by the following conditions: solution heat treatment, solution heat treatment and cold working, precipitation heat treatment, and mill hardening. Specimens shall adhere to specified chemical composition, grain size, and grain count requirements. Alloys shall also undergo tensile and bend tests to evaluate their conformance to tensile strength, yield strength, elongation, and Rockwell hardness requirements.

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