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  • ASTM B247M-15

ASTM B247M-15

Standard Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings (Metric)

ASTM International, 10/01/2015

Publisher: ASTM

File Format: PDF

$33.00$67.00


Published:01/10/2015

Pages:14

File Size:1 file , 140 KB

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1.1 This specification covers aluminum-alloy (Note 1) die forgings, hand forgings, and rolled ring forgings as shown in Tables 2-4 and in Section 10 for heat-treatable alloy forgings supplied in the F and 01 tempers. The maximum thicknesses for forgings within the scope of this specification are as indicated in those tables.

Note 1: Throughout this specification use of the term alloy in the general sense includes aluminum as well as aluminum alloy.

Note 2: For forging stock supplied as rolled or cold-finished bar or rod see Specification B211M. For forging stock supplied as extruded bar or rod see Specification B221M.

(A) Limits are in mass percent maximum unless shown as a range or stated otherwise.
(B) Analysis shall be made for the elements for which limits are shown in this table.
(C) 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-off method of Practice E29.
(D) 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.
(E) Other Elements-Total shall be the sum of unspecified metallic elements 0.010 % or more, rounded to the second decimal before determining the sum.
(F) The aluminum content shall be calculated by subtracting from 100.00 % the sum of all metallic elements present in amounts of 0.010 % or more each, rounded to the second decimal before determining the sum.
(G) Upon agreement between purchaser and producer or supplier, a zirconium-plus-titanium limit of 0.20 % maximum is permitted.
(H) Vanadium, 0.05-0.15 %. The total for other elements does not include Vanadium.
(I) Upon agreement between purchaser and producer or supplier, a zirconium-plus-titanium limit of 0.25 % maximum is permitted.
(J) In case there is a discrepancy in the values listed in Table 1 with those listed in the “ International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys” (known as the “Teal Sheets”), the composition limits registered with the Aluminum Association and published in the “Teal Sheets” shall be considered the controlling composition. The “Teal Sheets” are available athttp://www.aluminum.org/tealsheets.
(A) To determine conformance to this specification, each value for tensile strength and yield strength shall be rounded to the nearest 1 MPa and each value for elongation to the nearest 0.5 % (or the nearest 0.1 % if measured in accordance with 7.8.4 of Test Method B557M), in accordance with the rounding-off method of Practice E29.
(B) For the basis for establishment of strength property limits, see Annex A1.
(C) These values apply to standard specimens. For the heat-treatable alloys the thicknesses shown are the maximum thickness at time of heat treatment for which the indicated properties apply. Forgings machined prior to heat treatment shall develop the properties applicable to the heat-treated thickness provided the as-forged thickness is not more than twice the heat-treated thickness.
(D) For information only. The hardness is usually measured on the surface of a forging using a 500-kgf load and 10-mm ball.
(E) Tensile property test requirements in any direction are limited to a minimum material dimension of 50 mm because of the difficulty in obtaining a tension test specimen suitable for routine control testing.
(F) These values apply to standard 12.5-mm diameter test sp

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