ASTM A532

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Designation: A 532/A 532M– 93a (Reapproved 1999)e1

Standard Speci cation for

Abrasion-Resistant Cast Irons1This standard is issued under the xed designation A 532/A 532M; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

e1 NOTE—Keywords were added editorially in October 1999.

1. Scope 1.1 This speci cation covers a group of white cast irons that have been alloyed to secure high resistance to abrasive wear in the applications of the mining, milling, earth-handling, and manufacturing industries. 1.2 Simple and low-alloy white cast irons that consist essentially of iron carbides and pearlite are speci cally excluded from this speci cation. 1.3 The values stated in inch-pound units or SI units are to be regarded separately as the standard. 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 cation. 2. Referenced Documents 2.1 ASTM Standards: E 10 Test Method for Brinell Hardness of Metallic Materials2 E 18 Test Methods for Rockwell Hardness and Rockwell Super cial Hardness of Metallic Materials2 E 92 Test Method for Vickers Hardness of Metallic Materials2 E 350 Test Methods for Chemical Analysis of Carbon Steel, Low-Alloy Steel, Silicon Electrical Steel, Ingot Iron, and Wrought Iron3 E 351 Test Methods for Chemical Analysis of Cast Iron— All Types3 3. Ordering Information 3.1 Orders for material in this speci cation should include the following information: 3.1.1 Quantity, 3.1.2 Speci cation number, class, and type, 3.1.3 Description of the casting, pattern number, or drawing, 3.1.4 Chilling of the casting, if required (see 4.2),1 This speci cation is under the jurisdiction of ASTM Committee A-4 on Iron Castings and is the direct responsibility of Subcommittee A04.01 on Grey and White Iron Castings. Current edition approved Jan. 15, 1993 and April 15, 1993. Published November 1993. Originally published as A 532–65 T. Last previous edition A 532–93. 2 Annual Book of ASTM Standards, Vol 03.01. 3 Annual Book of ASTM Standards, Vol 03.05.

3.1.5 Heat treat condition (see 5.1), 3.1.6 Hardness level, if supplied hardened or hardened and stress relieved, and 3.1.7 Hardness method, Brinell, Rockwell, Vickers (see Section 9). If the hardness method is not speci ed, it shall be at the manufacturer’s option. 4. Method of Manufacture 4.1 These alloys may be made by any suitable melting process. 4.2 If the casting is to be chilled or otherwise specially treated on any portion, the inquiries and the purchase order shall so state and a properly marked drawing of the casting w

ill accompany both the inquiry and the purchase order. 5. Heat Treatment 5.1 The casting will be supplied in one of the following conditions: 5.1.1 As-cast, 5.1.2 As-cast and stress relieved, 5.1.3 Hardened, 5.1.4 Hardened and stress relieved, or 5.1.5 Softened for machining. 5.2 Unless otherwise speci ed by the purchaser, the manufacturer shall supply the castings in the heat treatment he deems best for the application. 5.3 If the heat treatment speci ed for delivered condition is not that of nal use, it shall be the responsibility of the purchaser to provide the additional heat treatment. 5.4 Class II and Class III alloys are frequently ordered in the annealed condition with a maximum hardness of 400 HB. 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 ed in the inquiry, contract, or order, the purchaser may then specify delivery in the hardened condition. If the purchaser speci es delivery in the annealed condition, subsequent hardening (and stress-relief, if it is desired) is the responsibility of the purchaser. 6. Chemical Composition 6.1 The composition of the metal of a class and type produced under this speci cation shall fall within the ranges

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