Norm

ASTM B94-13

Standard Specification for Magnesium-Alloy Die Castings

54,27

Over deze norm

Status Definitief
Aantal pagina's 6
Commissie B07.04
Gepubliceerd op 01-05-2013
Taal Engels

1.1 This specification covers magnesium-alloy die castings. Current alloy compositions are specified under the designations shown in Table 1.2

TABLE 1 Chemical RequirementsA,B ,C,D

Alloy

Composition, %

DesignationB

UNS

Aluminum

Manganese

Rare Earth

Strontium

Zinc

Copper, max

Iron, max

Silicon

Nickel

Other Metallic Impurities, max, each

Magnesium

AS41A

M10410

3.5-5.0

0.20-0.50

...

...

0.12

0.06

...

0.50-1.5

0.03

...

remainder

AS41B

M10412

3.5-5.0

0.35-0.7E

...

...

0.12

0.02

0.0035E

0.50-1.5

0.002

0.02

remainder

AM50A

M10500

4.4-5.4

0.26-0.6E

...

...

0.22

0.010

0.004E

0.10

0.002

0.02

remainder

AM60A

M10600

5.5-6.5

0.13-0.6

...

...

0.22

0.35

...

0.50

0.03

...

remainder

AM60B

M10602

5.5-6.5

0.24-0.6E

...

...

0.22

0.010

0.005E

0.10

0.002

0.02

remainder

AZ91A

M11910

8.3-9.7

0.13-0.50

...

...

0.35-1.0

0.10

...

0.50

0.03

...

remainder

AZ91B

M11912

8.3-9.7

0.13-0.50

...

...

0.35-1.0

0.35

...

0.50

0.03

...

remainder

AZ91D

M11916

8.3-9.7

0.15-0.50E

...

...

0.35-1.0

0.030

0.005E

0.10

0.002

0.02

remainder

AJ52AF

M17520

4.5-5.5

0.24-0.6E

...

1.7-2.3

0.22

0.010

0.004E

0.10

0.001

0.01

remainder

AJ62AF

M17620

5.5-6.6

0.24-0.6E

...

2.0-2.8

0.22

0.010

0.004E

0.10

0.001

0.01

remainder

AS21A

M10210

1.8-2.5

0.18-0.7

...

...

0.20

0.01

0.005

0.7-1.2

0.001

0.01

remainder

AS21BF

M10212

1.8-2.5

0.05-0.15

0.06-0.25

...

0.25

0.008

0.0035

0.7-1.2

0.001

0.01

remainder

A 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 the course of routine analysis, further analysis shall be made to determine that these other elements are not in excess of 0.3 %.
B 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 in accordance with the rounding procedure prescribed in Section 3 of Practice E29.
C Where single units are shown, these indicate the maximum amounts permitted.
D  ASTM alloy designations were established in accordance with Practice B951, UNS designations were established in accordance with Practice E527.
E In alloys AS41B, AM50A, AJ52A, AM60B, AJ62A, and AZ91D, if either the minimum manganese limit or the maximum iron limit is not met, then the iron/manganese ratio shall not exceed 0.010, 0.015, 0.015, 0.021, 0.021, and 0.032, respectively.
F Alloys AJ52A, AJ62A, and AS21B are patented compositions for elevated temperature applications. Interested parties are invited to submit information regarding the identification of alternatives to these compositions to ASTM International. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

1.2 The values stated in inch-pound units are standard. The SI values 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 Die Castings
Engelse titel Standard Specification for Magnesium-Alloy Die Castings

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