ASTM B108 PDF

Scope. This specification covers aluminum-alloy permanent mold castings designated as shown in Table 1. This specification is for aluminum-alloy. ASTM B/BM: Standard Specification for Aluminum-Alloy Permanent Mold Castings. ASTM B/BMe1. Standard Specification for Aluminum-Alloy Permanent Mold Castings. standard by ASTM International, 05/15/ View all product.

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Each package or container shall contain only one part number, alloy, and temper of material when packaged for shipment unless otherwise agreed upon. This is all too often the case in homes, schools and other institutions, and businesses that suffered water damage, elevated humidity levels, and no electricity for an extended period of time. E Decrease in volume accompanying freezing of alloy and measure of amount of compensating feed metal required in form of risers. Analysis shall be made for the elements for which limits are shown in this table.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. F Other Elements—Total shall be the sum of unspeci? A major concern encountered by many residents in their daily lives is exposure to the presence of high concentrations of mold. Ratings, in the case of heat-treatable alloys, based on T6 temper.

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For the products described, mechanical property limits for the respective size ranges are based on the analyses of at least data from standard production material with no more than ten data from a given lot. All tests are performed in accordance with the appropriate ASTM test methods. Unless otherwise specified, only aluminum or producers foundry scrap shall be used in the re-melting furnace from which molten metal is taken for pouring directly into castings.

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The responsibility of furnishing castings that can be laid out and machined to the finished dimensions within the permissible variations specified shall rest with the producer, except where mold equipment is furnished by the purchaser. Inthe Institute of Medicine IOM found that there was sufficient evidence to link indoor exposure to mold with upper respiratory tract symptoms, cough and wheeze in otherwise healthy people; with asthma symptoms in people with asthma; and with hypersensitivity pneumonitis HP in individuals susceptible to that immune-mediated condition.

With shouldered ends, 23? Should any analysis by the producer or the purchaser establish that an Others element exceeds the limit of Each or that the aggregate of several Others elements exceeds the limit of Total, the material shall be considered nonconforming.

The location of the identi? One per melt-heat combination shall be tested when tensile properties of castings are to be determined. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

E S1 units for information only. T5 Cooled from an elevated temperature shaping process and then arti?

P Not recommended for service at elevated temperatures. Methods for Determination of Chemical Composition 9.

Samples for chemical analysis shall be taken by sawing, drilling, or milling the casting or test specimens in such a manner as to be representative of the material. The weight of a prepared sample shall not be less than 75 g. For purposes of determining conformance sstm these limits, an observed value or a calculated value obtained from analysis shall be rounded to the nearest unit in the last right-hand place of?

Peening will not be permitted to repair cracks, cold shuts, shrinks, misruns, defects due to careless handling, or other similar major defects. Pure materials, recycled materials, and master alloys may be asstm to make alloys conforming to this specification.

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E Others includes listed elements for which no specific limit is shown as well as unlisted metallic elements.

Sampling for Determination of Chemical Composition 8. The purchaser shall have the right to perform any of asm inspections and tests set forth in the speci?

Workmanship, Finish, and Appearance J These properties apply only to castings having section thicknesses not greater than 2 in. Elongation in 2 in. The equivalent unified numbering system alloy designations are in accordance with Practice E ashm Unalloyed aluminum contains a minimum of Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Limitations on the extent and frequency of such repairs, and methods of inspection of repaired areas should also be agreed upon.

ASTM International

G Composite rating based on ease aastm cutting, chip characteristics, quality of? Repair of Castings It is advisable to have agreed upon observational standards representing both acceptable and unacceptable material. All welded areas shall be encircled with a ring or white paint prior to submission for? This abstract is a brief summary of the referenced standard.

T1 Cooled from b018 elevated temperature shaping process and naturally aged to a substantially stable condition. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.

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