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  • ASTM
    E194-10 Standard Test Method for Acid-Insoluble Content of Copper and Iron Powders
    Edition: 2010
    $144.00
    Unlimited Users per year

Description of ASTM-E194 2010

ASTM E194 - 10

Standard Test Method for Acid-Insoluble Content of Copper and Iron Powders

Active Standard ASTM E194 | Developed by Subcommittee: B09.02

Book of Standards Volume: 02.05




ASTM E194

Significance and Use

The purpose of this test method is to determine the amount of gangue, refractory, inert, etc., materials, that may adversely affect compacting tools and sintered properties of components formed from copper and iron powders.

The insoluble matter consists of those nonmetallic substances that do not dissolve in the mineral acid used to dissolve the metal. In copper powder, which is treated with nitric acid, the acid-insoluble matter includes silica, insoluble silicates, alumina, clays, and other refractory materials that may be introduced either as impurities in the raw material or from the furnace lining, fuel, etc.; lead sulfate may also be present. In iron powder, which is treated with hydrochloric acid, the insoluble matter may include carbides in addition to the substances listed above. The test method excludes insoluble material that is volatile at the ignition temperature specified.

1. Scope

1.1 This test method covers the determination of the mineral-acid-insoluble matter content of copper and iron powders in amounts under 1.0 %.

1.2 This standard does not purport to address all of the safety problems, if any, associated with its use. 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.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B215 Practices for Sampling Metal Powders

E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


Keywords

acid insolubles; copper powder; iron powder; Acid-insoluble matter content; Copper powder; Insoluble matter content; Iron powder; Mineral-acid-insoluble matter; Nonmetallic materials;


ICS Code

ICS Number Code 77.160 (Powder metallurgy)


DOI: 10.1520/E0194-10

ASTM International is a member of CrossRef.

ASTM E194



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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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