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ASTM B 91 : 2012

ASTM B 91 : 2012

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Standard Specification for Magnesium-Alloy  Forgings

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Superseded by

ASTM B 91 : 2017

Language(s)

English

Published date

01-11-2012

Publisher

American Society for Testing and Materials

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Hardcopy - English
PDF - English
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Committee
B 07
DocumentType
Standard
Pages
5
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1This specification covers magnesium alloy forgings designated as shown in Table 1.

TABLE 1 Chemical Composition LimitsA,B
Note 1—Analysis shall regularly be made only for the elements specifically mentioned in this table. If, however, the presence of other elements is suspected or indicated in amounts greater than the specified limits, further analysis shall be made to determine that these elements are not present in excess of the specified limits.
Note 2—The following applies to all specified limits in this table. For purposes of acceptance and rejection, an observed value or a calculated value obtained from analysis should be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit.

Composition, %

Element

Alloy AZ31B
  (UNS No.
  M11311)

Alloy AZ61A
  (UNS No.
  M11610)

Alloy AZ80A
  (UNS No.
  M11800)

Alloy ZK60A
  (UNS No.
  M16600)

   Magnesium

  remainder

  remainder

  remainder

  remainder

   Aluminum

  2.5–3.5

  5.8–7.2

  7.8–9.2

  ...

   Manganese

  0.20–1.0

  0.15–0.5

  0.12–0.5

  ...

   Zinc

  0.6–1.4

  0.40–1.5

  0.20–0.8

  4.8–6.2

   Thorium

  ...

  ...

  ...

  ...

   Zirconium, min

  ...

  ...

  0.45

   Silicon

  0.10

  0.10

  0.10

  ...

   Copper

  0.05

  0.05

  0.05

  ...

   Nickel

  0.005

  0.005

  0.005

  ...

   Iron

  0.005

  0.005

  0.005

  ...

   Calcium

  0.04

  ...

  ...

  ...

   Other impuritiesC

  0.30

  0.30

  0.30

  0.30

A Limits are in weight percent maximum unless shown as a range or stated otherwise.
B  These alloy designations were established in accordance with Practice B951.
C  Includes listed elements for which no specific limit is shown.

1.2The values stated in inch-pound units are the standard. The SI values in parentheses are provided for information only.

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