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About This Item

 

Full Description

1.1 This specification covers a commercial zinc-aluminum alloy in ingot form for remelting for the manufacture of thin wall pressure die castings as designated and specified in Table 1.

TABLE 1 Chemical and North American Color Code Requirements

Common Name

HF AlloyA,B,C

UNS

to be assigned

Color CodeD

Red/Brown

Element

 

Aluminum

4.3-4.7

Magnesium

0.005-0.012

Copper, max

0.035

Iron, max

0.03

Lead, max

0.003

Cadmium, max

0.002

Tin, max

0.001

ZincE

Remainder

A Zinc alloy ingots for die casting may contain nickel, chromium, silicon, and manganese in amounts of up to 0.01, 0.01, 0.01, and 0.01 %, respectively. No harmful effects have ever been noted due to the presence of these elements in up to these concentrations and, therefore, analyses are not required for these elements.
B The last digit of a UNS number differentiates between alloys of similar composition. UNS designations for ingot and casting versions of an alloy were not assigned in the same sequence for alloys.
C For purposes of acceptance and rejection, the observed value or 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 Practice E29.
D Refer to Practice B908 (Note: Colors indicated are for North American applications.)
E Determined arithmetically by difference.

1.2 Systems of nomenclature used to designate zinc and zinc-aluminum (ZA) alloys used for casting are described in Appendix X1.

1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4 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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

 

Document History

  1. ASTM B989-22


    Standard Specification for High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings

    • Most Recent
  2. ASTM B989-19a


    Standard Specification for High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings

    • Historical Version
  3. ASTM B989-19


    Standard Specification for High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings

    • Historical Version
  4. ASTM B989-14

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    Standard Specification for High Fluidity (HF) Zinc-Aluminum Alloy in Ingot Form for Thin Wall Die Castings

    • Historical Version