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ASTM B91-12
Standard Specification for Magnesium-Alloy ; Forgings
5 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
77.150.20 Magnesium products / Продукция из магния
Сборник (ASTM):
02.02 Aluminum and Magnesium Alloys / Алюминий и магниевые сплавы
Тематика:
Other Nonferrous Metals
Описание
Реферат

This specification covers UNS M11311, M11610, M11800, or M16600 magnesium alloy forgings. The conformance of each material to the required chemical composition can be determined using any suitable method of chemical analysis. Samples for chemical analysis should be taken when the ingots are poured or from the finished or semi-finished products by drilling, sawing, milling, turning, or clipping. The variations in testing speed do not seriously affect the obtained tensile property values. However, care must be exercised so that the testing speed does not exceed the ability of the equipment to function satisfactorily. Unless specified, forgings should be chrome pickled before shipment.

Область применения

1.1 This 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.

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

Ключевые слова:
forgings; magnesium alloy