Norm

ASTM B199-12

Standard Specification for Magnesium-Alloy Permanent Mold Castings

54,27

Over deze norm

Status Definitief
Aantal pagina's 6
Commissie B07.04
Gepubliceerd op 01-11-2012
Taal Engels

1.1 This specification covers magnesium alloy permanent mold casting alloys designated as shown in Table 1.

TABLE 1 Chemical Composition LimitsA
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 shall be rounded to the nearest unit in the last right-hand place of figures used in expressing the specified limit.

Alloy NumberB

Composition, %

ASTM

UNS

 Iron

Magnesium

Aluminum

Manganese

 Zinc

Rare Earths

Zirconium

Silicon

Copper

Nickel

TotalC
Other
Impuri-
ties

Others
Each

AM100A

M10100

 ...

remainder

  9.3 to 10.7

0.10???0.35

0.30

...

...

0.30

0.10

0.01

0.30

  ...

AZ81A

M11810

 ...

remainder

  7.0 to 8.1

0.13???0.35

0.40 to 1.0

...

...

0.30

0.10

0.01

0.30

  ...

AZ91C

M11914

 ...

remainder

  8.1 to 9.3

0.13???0.35

0.40 to 1.0

...

...

0.30

0.10

0.01

0.30

  ...

AZ91E

M11919

 0.005D

remainder

  8.1 to 9.3

0.17???0.35

0.40 to 1.0

...

...

0.20

0.015

0.0010

0.30

  0.01

AZ92A

M11920

 ...

remainder

  8.3 to 9.7

0.10???0.35

1.6 to 2.4

...

...

0.30

0.25

0.01

0.30

  ...

EQ21AE

M18330

 ...

remainder

  ...

...

...

1.5 to 3.0F

0.40 to 1.0

...

0.05???0.10

0.01

0.30

  ...

EZ33A

M12330

 ...

remainder

  ...

...

2.0 to 3.1

2.5 to 4.0

0.50 to 1.0

...

0.10

0.01

0.30

  ...

QE22AG

 M18220E

 ...

remainder

  ...

...

...

1.8 to 2.5F

0.40 to 1.0

...

0.10

0.01

0.30

  ...

A Limits are in weight percent max unless shown as a range or stated otherwise.
B ASTM alloy designations were established in accordance with Practice B951. UNS designations were established in accordance with Practice E527.
C  Includes listed elements for which no specific limit is shown.
D If iron exceeds 0.005 %, the iron to manganese ratio shall not exceed 0.032.
E Silver content for Alloy EQ21A (M18330) shall be 1.3 to 1.7 %.
F  Rare earth elements are in the form of didymium.
G Silver content for Alloy QE22A (M18220) shall be 2.0 to 3.0, inclusive.

1.2 The values stated in inch-pound units are to be regarded as the standard. The SI values given in parentheses are provided for information only.

1.3 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.

Details

ICS-code 77.150.20
Nederlandse titel Standard Specification for Magnesium-Alloy Permanent Mold Castings
Engelse titel Standard Specification for Magnesium-Alloy Permanent Mold Castings

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