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STANDARD SPECIFICATIONS FOR BRASS INGOT METAL GRADED AND UNGARED CASTING

20 pp. (English).
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 Summary

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AMERICAN SOCIETY FOR TESTING MATERIALsJ±5l5i5

1315 SPRUCE STREET, PHILADELPHIA, PA.

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Serial Designation: B 30-22.

These specifications are issued under the fixed designation B 30; the

final number indicates the year of original adoption as standard, or in the case of revision, the year of last revision.

Proposed as Tentative, 1919; Adopted in Amended Form, 1922.

1. These specifications cover brass ingot metal for sand Materiel castings, known commercially as red and yellow brass ingot, CoTered* made wholly or partly from scrap materials. Seven typical alloys are specified and are designated Grades Nos. 1 to 7, in accordance with their decreasing copper content as specified in Section 3. These specifications also cover brass ingot metal which has no grade limit, designated as ungraded material such

as a specific lot of ingots having a stated composition suitable for the buyers' needs.

I. MANUFACTURE.

2. The manufacturer shall use care to have each lot of ingot uniform

metal as uniform in quality as possible. Quality.

II. CHEMICAL PROPERTIES AND TESTS.

.5. Individual ingots of any lot shall not show an extreme chemical variation between the high and low copper percentages of more ConlPOB't than.2.5 per cent and between the high and low percentages of the other main constituents, except zinc, of more than 1.5 per cent. The graded alloys shall conform to the following requirements as to chemical composition, within the limits specified in Section 4:


 
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