ASTM B792 - 13 Standard Specification for Zinc Alloys in Ingot Form for Slush Casting

Abstract

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.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ISO Standards

ISO 3815-1 Zinc and zinc alloys -- Part 1: Analysis of solid samples by optical emission spectrometry

ISO 3815-2 Zinc and zinc alloys -- Part 2: Analysis by inductively coupled plasma optical emission spectrometry

ASTM Standards

B899 Terminology Relating to Non-ferrous Metals and Alloys

B908 Practice for the Use of Color Codes for Zinc Casting Alloy Ingot

B949 Specification for General Requirements for Zinc and Zinc Alloy Products

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E88 Practice for Sampling Nonferrous Metals and Alloys in Cast Form for Determination of Chemical Composition

E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)

E536 Test Methods for Chemical Analysis of Zinc and Zinc Alloys

Keywords

casting; casting alloys; gravity casting; permanent mold casting; slush casting; zinc; zinc alloys;

ICS Code

ICS Number Code 77.150.60 (Lead, zinc and tin products)

DOI: 10.1520/B0792-13

ASTM International is a member of CrossRef.

ASTM B792 (Nonferrous Metal Standards and Nonferrous Alloy Standards)

Citing ASTM Standards

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