ASTM B793-03

Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds

SCOPE
1.1 This specification covers commercial zinc alloys in ingot form for remelting for the manufacture of dies and molds from the alloys as shown in Table 1.
1.2 This specification presents requirements for zinc alloys suitable for the production of sand cast or plaster cast forming dies for sheet metal stamping operations and plastic injection molding. Alloy A is intended for use in the fabrication of dies for sheet metal stamping under drop hammer and hydraulic pressure. Alloy B is a special purpose alloy of closely controlled composition and is primarily used in the manufacture of plastic injection molds.
1.3 This specification covers two zinc alloys which are specified and designated as follows: UNS ASTMTraditionalZ35543 Alloy AKirksite AZ35542 Alloy BKirksite B
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 Data Sheet 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.

General Information

• Status: Historical
• Publication Date: 09-Jun-2003
• ICS: 77.120.60 - Lead, zinc, tin and their alloys
• Technical Committee: B02 - Nonferrous Metals and Alloys
• Drafting Committee: B02.04 - Zinc and Cadmium

Relations

• Replaces: ASTM B793-01e1 - Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds
• Effective Date: 10-Jun-2003
• Replaced By: ASTM B793-08 - Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds
• Effective Date: 01-Mar-2008
• Referred By: ASTM B908-22 - Standard Practice for the Use of Color Codes for Zinc Casting Alloy Ingot
• Effective Date: 10-Jun-2003
• Referred By: ASTM B949-23 - Standard Specification for General Requirements for Zinc and Zinc Alloy Products
• Effective Date: 10-Jun-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 793 – 03
Standard Specification for
Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and
1
Plastic Injection Molds
This standard is issued under the fixed designation B 793; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
TABLE 1 Chemical and North American Color Code
1. Scope*
A,B
Requirements
1.1 This specification covers commercial zinc alloys in
Composition, %
ingot form for remelting for the manufacture of dies and molds
UNS Z35543 UNS Z35542
from the alloys as shown in Table 1.
Alloy A Alloy B
1.2 This specification presents requirements for zinc alloys
Kirksite A Kirksite B
suitable for the production of sand cast or plaster cast forming
C
Color Code Green/Red Green/Black
dies for sheet metal stamping operations and plastic injection
Element
molding. Alloy A is intended for use in the fabrication of dies
Aluminum 3.5–4.5 3.9–4.3
for sheet metal stamping under drop hammer and hydraulic
Cadmium 0.005 max 0.003 max
pressure. Alloy B is a special purpose alloy of closely con-
Copper 2.5–3.5 2.5–2.9
Iron 0.100 max 0.075 max
trolled composition and is primarily used in the manufacture of
Lead 0.007 max 0.003 max
plastic injection molds.
Magnesium 0.02–0.10 0.02–0.05
1.3 This specification covers two zinc alloys which are
Tin 0.005 max 0.001 max
Zinc Remainder Remainder
specified and designated as follows:
A
The following applies to all specified limits in this table: For purposes of
UNS ASTM Traditional
determining conformance with this specification, the observed value or calculated
value obtained from analysis shall be rounded off “to the nearest unit” in the last
Z35543 Alloy A Kirksite A
right hand place of figures used in expressing the specified limit, in accordance
Z35542 Alloy B Kirksite B
with the rounding method of Practice E29.
B
UNS designations were established in accordance with Practice E 527.
1.4 This standard does not purport to address all of the
C
Refer to Practice B 908. (Note: Colors indicated are for North American
safety concerns, if any, associated with its use. It is the
applications.)
responsibility of the user of this standard to become familiar
with all hazards including those identified in the appropriate
E29 Practice for Using Significant Digits in Test Data to
Material Safety Data Sheet (MSDS) for this product/material
3
Determine Conformance with Specifications
as provided by the manufacturer, to establish appropriate
E47 Test Methods for Chemical Analysis of Zinc Die-
safety and health practices, and determine the applicability of 4
Casting Alloys
regulatory limitations prior to use.
E88 Practice for Sampling Nonferrous Metals and Alloys
5
in Cast Form for Determination of Chemical Composition
2. Referenced Documents
6
E 527 Practice for Numbering Metals and Alloys (UNS)
2.1 The following documents of the issue in effect on date
E 536 TestMethodsforChemicalAnalysisofZincandZinc
of order acceptance form a part of this specification to the
5
Alloys
extent referenced herein:
2.2 ASTM Standards:
3. Terminology
B 899 Terminology Relating to Non-ferrous Metals and
3.1 Terms shall be defined in accordance with Terminology
2
Alloys
B 899.
B 908 Practice for the Use of Color Codes for Zinc Casting
2
Alloy Ingot 4. Ordering Information
4.1 Orders for ingots under this specification shall include
the following information:
1
This specification is under the jurisdiction of ASTM Committee B02 on
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
3
B02.04 on Zinc and Cadmium. Annual Book of ASTM Standards, Vol 14.02.
4
Current edition approved June 10, 2003. Published August 2003. Originally Discontinued; see 1998 Annual Book of ASTM Standards, Vol 03.05.
e1 5
approved in 1988. Last previous edition approved in 2001 as B 793 – 01 . Annual Book of ASTM Standards, Vol 03.05.
2 6
Annual Book of ASTM Standards, Vol 02.04. Annual Book of ASTM Standards, Vol 01.01.
*A Summary of Changes section appears at the end of this standard.
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B793–03
4.1.1 Quantity in pounds, cal (Test Methods E 536 or E 47 for tin), or other methods. In
4.1.2 Alloy (Table 1), case of dispute, the results secured by Test Method E 536 and
4.1.3 Size, if not manufacturer’s standard, Test MethodE47 for tin only shall be the basis of acceptance.
4.1.4 Specification number and date,
7. Source Inspection
4.1.5 Source inspection (Section 7), and
7.1 If the purchaser desires that his representative inspect or
4.1.6 Ma
...