ASTM B108 / B108M - 11 standard specification for aluminum-alloy permanent mold castings

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Source: ASTM International

This specification covers aluminum-alloy permanent mold castings. 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. 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. 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. Pure materials, recycled materials, and master alloys may be used to make alloys conforming to this specification. Foundry control shall consist of examination of castings by radiographic or other approved methods for determining internal discontinuities until the gating, pouring, and other foundry practices have been established to produce castings meeting the quality standards furnished by the purchaser or agreed upon by the purchaser and the producer. Separately cast test specimens shall be cast in iron molds. If the castings are to be heat treated and separately cast specimens are to be used, the specimens representing such castings shall be heat treated with the castings they represent. If castings are to be heat treated and tests are to be obtained on the castings, the test specimens shall be taken from the castings after heat treatment. One per melt-heat combination shall be tested when tensile properties of castings are to be determined. The finished castings shall be uniform in composition and free of blowholes, cracks, shrinks, and other discontinuities.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers aluminum-alloy permanent mold castings designated as shown in Table 1.

1.2 This specification is not intended for aluminum-alloy permanent mold castings used in aerospace applications.

1.3 Alloy and temper designations are in accordance with ANSI H35.1/H35.1(M). The equivalent unified numbering system alloy designations are in accordance with Practice E 527.

1.4 Unless the order specifies the “M” specification designation, the material shall be furnished to the inch-pound units.

1.5 For acceptance criteria for inclusion of new aluminum and aluminum alloys and their properties in this specification, see Annex A1 and Annex A2.

1.6 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately)

ASTM Standards
B179 Specification for Aluminum Alloys in Ingot and Molten Forms for Castings from All Casting Processes
B275 Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
B660 Practices for Packaging/Packing of Aluminum and Magnesium Products
B881 Terminology Relating to Aluminum- and Magnesium-Alloy Products
B917/B917M Practice for Heat Treatment of Aluminum-Alloy Castings from All Processes
D3951 Practice for Commercial Packaging
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E34 Test Methods for Chemical Analysis of Aluminum and Aluminum-Base Alloys
E94 Guide for Radiographic Examination
E155 Reference Radiographs for Inspection of Aluminum and Magnesium Castings
E165 Practice for Liquid Penetrant Examination for General Industry
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E607 Test Method for Atomic Emission Spectrometric Analysis Aluminum Alloys by the Point to Plane Technique Nitrogen Atmosphere
E716 Practices for Sampling Aluminum and Aluminum Alloys for Spectrochemical Analysis
E1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Atomic Emission Spectrometry

ANSI Standard
H35.1/H35.1M Alloy and Temper Designation Systems for Aluminum

Military Standards
NAVSEAS9074-AR-GIB-0 Requirements for Fabrication Welding and Inspection, and Casting Inspection and Repair for Machinery, Piping, and Pressure Vessels

AMS Specification
AMS2771 Heat Treatment of Aluminum Alloy Castings

Federal Standard
FedStd.No.123 Marking for Shipment (Civil Agencies)

Other Standards
CENEN14242 Aluminum and Aluminum Alloys, Chemical Analysis, Inductively Coupled Plasma Optical Emission Spectral Analysis

Index Terms

aluminum; permanent mold castings; Aluminum alloys (castings)--specifications; Permanent mold castings--aluminum alloy; UNS A02040 (Aluminum foundry alloy, casting); UNS A02080 (Aluminum foundry alloy, casting); UNS A02130 (Aluminum foundry alloy); UNS A02220 (Aluminum foundry alloy, casting); UNS A02420 (Aluminum foundry alloy, casting); UNS A03190 (Aluminum foundry alloy, casting); UNS A03320 (Aluminum foundry alloy, casting); UNS A03330 (Aluminum foundry alloy, casting); UNS A03360 (Aluminum foundry alloy, casting); UNS A03540 (Aluminum foundry alloy, casting); UNS A03550 (Aluminum foundry alloy, casting); UNS A03560 (Aluminum foundry alloy, casting); UNS A03590 (Aluminum foundry alloy, casting); UNS A04430 (Aluminum foundry alloy, casting); UNS A05130 (Aluminum foundry alloy, casting); UNS A05350 (Aluminum foundry alloy, casting); UNS A07050 (Aluminum foundry alloy, casting); UNS A07070 (Aluminum foundry alloy, casting); UNS A07110 (Aluminum foundry alloy, casting); UNS A07130 (Aluminum foundry alloy, casting); UNS A08500 (Aluminum foundry alloy, casting); UNS A08510 (Aluminum foundry alloy, casting); UNS A08520 (Aluminum foundry alloy, casting); UNS A13560 (Aluminum foundry alloy, casting); UNS A13570 (Aluminum foundry alloy, casting); UNS A14440 (Aluminum foundry alloy, casting); UNS A24430 (Aluminum foundry alloy, casting); UNS A33550 (Aluminum foundry alloy, casting) ;

ICS Code

ICS Number Code 77.150.10 (Aluminium products)

DOI: 10.1520/B0108_B0108M-11

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