ASTM B793-01e1

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 ASTMZ35543 Alloy AZ35542 Alloy 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-May-2001
• 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 B793-01 - Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds
• Effective Date: 10-May-2001
• Replaced By: ASTM B793-03 - Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds
• Effective Date: 10-Jun-2003
• Referred By: ASTM B949-23 - Standard Specification for General Requirements for Zinc and Zinc Alloy Products
• Effective Date: 10-May-2001
• Referred By: ASTM B908-22 - Standard Practice for the Use of Color Codes for Zinc Casting Alloy Ingot
• Effective Date: 10-May-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
ϵ1
Designation: B 793 – 01
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 (ϵ) indicates an editorial change since the last revision or reapproval.
1
ϵ NOTE—Paragraph 9.3 was corrected editorially and a Summary of Changes section was added in July 2001.
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
C
Color Code Green/Red Green/Black
suitable for the production of sand cast or plaster cast forming
Element
dies for sheet metal stamping operations and plastic injection
Aluminum 3.5–4.5 3.9–4.3
molding. Alloy A is intended for use in the fabrication of dies
Cadmium 0.005 max 0.003 max
for sheet metal stamping under drop hammer and hydraulic
Copper 2.5–3.5 2.5–2.9
pressure. Alloy B is a special purpose alloy of closely con-
Iron 0.100 max 0.075 max
Lead 0.007 max 0.003 max
trolled composition and is primarily used in the manufacture of
Magnesium 0.02–0.10 0.02–0.05
plastic injection molds.
Tin 0.005 max 0.001 max
1.3 This specification covers two zinc alloys which are
Zinc Remainder Remainder
specified and designated as follows: A
The following applies to all specified limits in this table: For purposes of
determining conformance with this specification, the observed value or calculated
UNS ASTM
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
Z35543 Alloy A
with the rounding method of Practice E 29E29.
Z35542 Alloy B
B
UNS designations were established in accordance with Practice E 527E 527.
C
Refer to Practice B 908. (Note: Colors indicated are for North American
1.4 This standard does not purport to address all of the
applications.)
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to become familiar
B 908 Practice for the Use of Color Codes for Zinc Casting
with all hazards including those identified in the appropriate
2
Alloy Ingot
Material Data Sheet for this product/material as provided by
E29 Practice for Using Significant Digits in Test Data to
the manufacturer, to establish appropriate safety and health
3
Determine Conformance with Specifications
practices, and determine the applicability of regulatory limi-
E47 Test Methods for Chemical Analysis of Zinc Die-
tations prior to use.
4
Casting Alloys
E88 Practice for Sampling Nonferrous Metals and Alloys
2. Referenced Documents
5
in Cast Form for Determination of Chemical Composition
2.1 The following documents of the issue in effect on date
6
E 527 Practice for Numbering Metals and Alloys (UNS)
of order acceptance form a part of this specification to the
E 536 Test Method for ChemicalAnalysis of Zinc and Zinc
extent referenced herein:
7
Alloys
2.2 ASTM Standards:
B 899 Terminology Relating to Nonferrous Metals and
3. Terminology
2
Alloys
3.1 Terms shall be defined in accordance with Terminology
B 899B 899.
1
This specification is under the jurisdiction of ASTM Committee B02 on
3
Nonferrous Metals and Alloys and is the direct responsibility of Subcommittee
Annual Book of ASTM Standards, Vol 14.02.
4
B02.04 on Zinc and Cadmium.
Discontinued; see 1997 Annual Book of ASTM Standards, Vol 03.05.
5
Current edition approved May 10, 2001. Published July 2001. Originally
Annual Book of ASTM Standards, Vol 03.05.
ϵ1
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published as B 793 – 88. Last previous edition B 793 – 98 .
Annual Book of ASTM Standards, Vol 01.01.
2 7
Annual Book of ASTM Standards, Vol 02.04. Annual Book of ASTM Standards, Vol 03.06.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
ϵ1
B793–01
4. Ordering Information 6.4 Method of Analysis—The determination of chemical
composition shall be made in accordance with suitable chemi-
4.1 Orders for ingots under this specification shall include
cal (Test Methods E 536 or E 47E 536E 47 for tin), or other
the following information:
methods
...