ASTM B108 / B108M - 12e1

    Standard Specification for Aluminum-Alloy Permanent Mold Castings

    Active Standard ASTM B108 / B108M | Developed by Subcommittee: B07.01

    Book of Standards Volume: 02.02


      Format Pages Price  
    PDF 18 $49.00   ADD TO CART
    Hardcopy (shipping and handling) 18 $49.00   ADD TO CART


    Abstract

    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 for aluminum-alloy permanent mold castings used in general purpose applications. It may not address the mechanical properties, integrity testing, and verification required for highly loaded or safety critical 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 E527.

    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 UnitsThe 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.

    TABLE 1 Chemical Composition LimitsA,B,C

    Alloy Composition, %
    ANSID UNSAluminumSiliconIronCopper Manga-
    nese
    Magne-
    sium
    ChromiumNickelZincTitaniumTinOther
    ElementsE
    EachTotalF
    204.0 A02040remainder0.200.354.25.0 0.100.150.35... 0.05 0.100.150.300.050.05 0.15
    242.0 A02420remainder 0.71.03.54.5 0.351.21.8 0.25 1.72.3 0.350.25...0.050.15
    296.0remainder 2.03.01.24.05.00.350.05 ... 0.35 0.500.25 ......0.35
    308.0remainder 5.06.01.04.05.00.500.10 ... ... 1.00.25 ......0.50
    319.0 A03190remainder5.56.51.03.04.00.500.10 ... 0.35 1.00.25 ......0.50
    332.0GA03320 remainder8.510.51.22.04.00.50 0.501.5 ... 0.50 1.0 0.25 ......0.50
    333.0 A03330remainder8.010.01.03.04.00.500.050.50 ... 0.50 1.00.25 ......0.50
    336.0GA03360 remainder11.013.01.2 0.501.50.350.71.3 ...2.03.0 0.350.25 ...0.05...
    354.0 A03540remainder8.69.40.201.62.00.100.400.6 ... ... 0.100.20 ...0.050.15
    355.0 A03550remainder4.55.50.6H1.01.50.50H0.400.6 0.25 ... 0.350.25...0.050.15
    C355.0 A33550remainder4.55.50.201.01.50.100.400.6 ... ... 0.100.20 ...0.050.15
    356.0 A03560remainder6.57.50.6H0.250.35H0.200.45 ... ... 0.350.25...0.050.15
    A356.0 A13560remainder6.57.50.200.20 0.100.250.45 ... ... 0.100.20...0.050.15
    357.0remainder 6.57.50.150.050.030.450.6 ... ... 0.050.20...0.050.15
    A357.0 A13570remainder6.57.50.200.20 0.100.400.7 ... ... 0.100.040.20 ...0.05I0.15
    E357.0remainder6.57.50.100.100.550.6.........0.100.20...0.05J0.15
    F357.0remainder6.57.50.100.200.100.400.7......0.100.040.20...0.05J0.15
    359.0 A03590remainder8.59.50.200.20 0.100.500.7 ... ... 0.100.20 ...0.050.15
    443.0 A04430remainder4.56.00.80.6 0.500.05 0.25 ... 0.500.25... ...0.35
    B443.0 A24430remainder4.56.00.80.15 0.350.05 ... ... 0.350.25 ... 0.050.15
    A444.0 A14440remainder6.57.50.200.10 0.100.05 ... ... 0.100.20... 0.050.15
    513.0GA05130 remainder0.300.400.100.303.54.5 ... ...1.42.20.20...0.050.15
    535.0 A05350remainder0.150.150.050.100.256.27.5 ... ... ...0.100.25 ...0.05K 0.15
    705.0 A07050remainder0.200.80.200.400.61.41.80.200.40 ...2.73.30.25 ...0.050.15
    707.0 A07070remainder0.200.80.200.400.61.82.40.200.40 ...4.04.50.25 ...0.050.15
    711.0GA07110 remainder0.300.71.40.350.650.05 0.250.45 ... ...6.07.0 0.20...0.050.15
    713.0 A07130remainder0.251.10.401.0 0.60.200.50 0.35 0.157.08.00.25 ...0.100.25
    850.0 A08500remainder 0.70.70.71.3 0.100.10 ...0.71.3 ...0.205.57.0...0.30
    851.0GA08510 remainder2.03.00.70.71.30.10 0.10 ...0.30.7 ...0.205.57.0...0.30
    852.0GA08520 remainder0.400.71.72.30.10 0.60.9 ...0.91.5 ...0.205.57.0...0.30

    A When single units are shown, these indicate the maximum amounts permitted.

    B Analysis shall be made for the elements for which limits are shown in this table.

    C The following applies to all specified limits in this table: For purposes of determining conformance to 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 figures used in expressing the specified limit in accordance with the rounding method of Practice E29.

    D ASTM alloy designations are recorded in Practice B275.

    E Others includes listed elements for which no specific limit is shown as well as unlisted metallic elements. The producer may analyze samples for trace elements not specified in the specification. However, such analysis is not required and may not cover all metallic Others elements. 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.

    F Other ElementsTotal shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.

    G 336.0 formerly A332.0, 332.0 formerly F332.0, 513.0 formerly A514.0, 711.0 formerly C712.0, 851.0 formerly A850.0, 852.0 formerly B850.0.

    H If the iron content exceeds 0.45 %, manganese content shall not be less than one half of the iron.

    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 and Sample Preparation of Aluminum and Aluminum Alloys for Determination of Chemical Composition by Spectrochemical Analysis

    E1251 Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry

    E2422 Digital Reference Images for Inspection of Aluminum Castings

    ANSI Standard

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


    ICS Code

    ICS Number Code 77.150.10 (Aluminium products)

    UNSPSC Code

    UNSPSC Code 31121300(Machined permanent mold castings); 31101706(Aluminum permanent mold casting)


    DOI: 10.1520/B0108_B0108M-12E01

    ASTM International is a member of CrossRef.

    ASTM B108 / B108M

    Citing ASTM Standards
    Back to Top