AMERICAN SOCIETY FOR TESTING MATERIALsJ±5l5i5
1315 SPRUCE STREET, PHILADELPHIA, PA.
feRAss fflGOT TOfcTttrf Graded and ungraded \ f
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Serial Designation: B 30-22.
These specifications are issued under the fixed designation ...(More)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.
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: