ASTM B85/B85M: Standard Specification for Aluminum-Alloy Die Castings. With respect to mechanical properties, alloys A, and are substantially inter- changeable. Sources: ASTM Ba; Aluminum Association. Sources: ASTM Ba; ASM; SAE; Wabash Alloys. E Registration or REACH ( the European Union]s Directive on Registration, Evaluation, and Authorization o .
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For this reason, it is considered that the only practical method for mechanical property control is proof testing the whole die casting. I Composite rating based on ease and speed of polishing and quality of? These shall be speci? C Limits are in percent maximum unless shown otherwise.
Low temperature aging treatments may be used for stress relief or dimensional stability. The characteristics are rated from 1 to 51 being the best and 5 being the least desirable for that attribute. Location of ejector pin h85 or parting lines shall be at the option of the producer; unless speci?
It may not address the mechanical properties, integrity testing, and verification required for highly loaded or safety critical applications.
Each package shall contain only one type of item unless otherwise agreed upon. A rating of 1 gives the best performance, 5 the poorest performance. When the location is not speci? Additions of small amounts of modi? Last previous edition approved in as B 85 xstm Comparison between static breakdown or proof tests and the mechanical properties of separately die cast test bars will show that test bars made in a different machine in a different die have no correlation with the die casting other than a common chemical TABLE X2.
Moore Specimen, cycles, ksi MPa 20 18 20 20 The derived SI unit for force is the newton Nwhich is de? Link to Active This link will always route to the current Active version of the standard.
This specification covers aluminum-alloy die castings of all compositions. In considering these ratings, it should be noted that all the alloys have sufficiently good characteristics to be accepted by users and producers of die castings. Adtm number in parentheses indicates the year of last reapproval.
L Rated on combined resistance of coating and base alloy to corrosion.
ASTM B85 Grade SC84B
Generally aluminum die castings are unsuitable for light color anodizing where pleasing appearance is required. Marking for shipment shall be in accordance with Fed. This specification covers aluminum-alloy die castings of all compositions. For the products satm, 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.
Combining values from the two systems may result in non-conformance with the standard. Different machines and dies continue to be necessary for die castings and test bars. B For purposes of acceptance and rejection, the observed value or calculated value obtained from analysis should be rounded off to the nearest unit in the last right-hand place of?
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use. A rating of 5 in any one or more categories does not rule an alloy out of commercial usefulness if its other attributes are especially favorable. Unless otherwise specified, only aluminum alloy conforming to the requirements of Specification B or producer’s foundry scrap shall be used in the remelting furnace from which molten metal is taken for pouring directly into castings.
If, however, the presence of other elements is suspected, or indicated in the course of routine analysis, further analysis shall be made to determine that the total of these other elements are not present in excess of speci?
The producer or supplier may use a system of statistical quality control b5 such examinations. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. Die castings of alloys A The producer may analyze samples for trace elements not speci? The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
Sampling shall be in accordance with Practices E 88 or Eor both. Originally approved in Approved April 1 Rewrite of the entire standard. As much of the rejected original material as possible shall be returned to the producer or supplier.
B Die castings are not usually solution heat treated. Pure materials, recycled materials, and master alloys and material not conforming to Specification B may be used to make alloys conforming to this specification, provided chemical analysis can be taken and adjusted to conform to the chemical requirements prior to pouring any castings.
The marking shall consist of raised Arabic numerals, and when applicable capital letters, cast integral.
The following bibliographic material is provided to assist you with your purchasing decision: D Ability of alloy to withstand stresses from contraction while cooling through hot-short or brittle temperature range. Aastm may not address the mechanical properties, integrity testing, and verification required for highly loaded or safety critical applications.
Pure materials, recycled materials, and master alloys and material not astk to Specification B may be used to make alloys conforming to this specification, provided chemical analysis can be taken and adjusted to conform to the chemical requirements prior to pouring any castings. Other methods may be used only when no published ASTM test method is available.
ASTM-B85 | Standard Specification for Aluminum-Alloy Die Castings | Document Center, Inc.
All tests are performed in accordance with the appropriate ASTM test methods. ASTM does not give any warranty express or implied or make any representation that the contents of this b58 are accurate, complete astk up to date.
Hence the rating for each characteristic is a relative measure of that attribute compared to the same attribute in another alloy. The producer or supplier shall be responsible only for replacement of the rejected castings to the purchaser.