More A These alloys may be made by melting process and shall have microstructures that consist of carbides, martensite, bainite, austenite, and in exceptional cases, minor amounts of graphite or pearlite. The following conditions for casting will be supplied: as-cast, as-cast and stress relieved, hardened, hardened and stress relieved, or softened for machining. Heat treatment shall be done.

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A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

Scope 1. Within the text, SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the speci?

Referenced Documents 2. Ordering Information 3. Current edition approved Jan. Published November Originally published as A —65 T. Last previous edition A — If the hardness method is not speci? Method of Manufacture 4. Heat Treatment 5. After machining operations are performed the castings may then be hardened.

If both annealing and machining are to be performed by the manufacturer, as speci? If the purchaser speci? Chemical Composition 6. Microstructure 7. Hardness Requirements 8. Hardness Method 9. Keywords A sampling procedure should be established by agreement between the supplier and the purchaser. B Non-chilled areas of casting shall meet minimum hardness or sand cast requirements. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phone , fax , or service astm.


Tipo: NH/IV - Resistente à abrasão e a Impacto - Classe: NI-HARD

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High Chrome White Iron – Abrasion Resistant Cast Irons


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