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This specification covers two commercial zinc alloys, namely: Slush Casting Alloy A (Z34510) and Slush Casting Alloy B (Z30500), in ingot form for remelting for the manufacture of castings. This slush casting alloys are used primarily for the manufacture of hollow castings such as lighting fixtures, lamp bases, and small statues. The alloys may be made by any approved process, shall be of uniform quality, and shall be free from dross, slag, or other harmful contamination. The ingot shall be reasonably free of surface corrosion and adhering foreign matter. Casting alloys in black/red and black/orange color codes shall conform to the chemical composition requirements prescribed for copper, aluminum, lead, cadmium, tin, iron, magnesium, and zinc. The requirements for chemical composition verification such as number of samples, methods of sampling, and method of chemical analysis are given.

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1.1 This specification covers commercial zinc alloys in ingot form for remelting for the manufacture of castings from the alloys as specified and designated as shown in Table 1.

TABLE 1 Chemical and North American Color Code Requirements^A,B

 

Composition, %

UNS Z34510
Slush Casting Alloy A

UNS Z30500
Slush Casting Alloy B

Color Code^C

Black/Red

Black/Orange

Element

 

 

Copper

0.2–0.3  

0.1 max  

Aluminum

4.50–5.00 

5.25–5.75 

Lead

0.007 max

0.007 max

Cadmium

0.005 max

0.005 max

Tin

0.005 max

0.005 max

Iron

0.100 max

0.100 max

Magnesium

0.010 max

0.010 max

Zinc

Remainder

Remainder

^A The following applies to all specified limits in this table. For purposes of determining conformance with this specification, the observed or calculated value obtained from analysis shall be rounded off “to the nearest unit” in the last right-hand place of figures used in expressing the specified limit, in accordance with the rounding method of Practice E29.^B UNS designations were established in accordance with Practice E527.^C Refer to Practice B908. (Note: Colors indicated are for North American applications.)

1.2 Slush casting alloys are used primarily for the manufacture of hollow castings such as lighting fixtures, lamp bases, and small statues.

1.3 This specification covers two zinc alloys which are specified and designated as follows:

UNS

ASTM

Z34510

Slush Casting Alloy A

Z30500

Slush Casting Alloy B

1.4 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.

1.5 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.