ASTM B240-22 - 1.4.2022
 
1. Scope

1.1?This specification covers commercial zinc and zinc-aluminum (ZA) alloys in ingot form for remelting for the manufacture of pressure die castings, foundry castings and continuous cast bar stock as designated and specified in Table 1. Seven alloy compositions are specified, designated as follows:

Common

Traditional

ASTMA

UNSA

?

?

?

?

Alloy 3

Zamak 3

AG 40A

Z33524

Alloy 7

Zamak 7

AG 40B

Z33526

Alloy 5

Zamak 5

AC 41A

Z35532

Alloy 2

Zamak 2

AC 43A

Z35544

ZA-8

ZA-8

...

Z35637

ZA-12

ZA-12

...

Z35632

ZA-27

ZA-27

...

Z35842

ACuZinc52

ACuZinc5

...

Z46540

1.2?Zinc alloys Z33524, Z33526, Z35532, Z46540, and Z35544 are used primarily for remelting in the manufacture of pressure die castings. Zinc-aluminum alloys Z35637, Z35632, and Z35842 are used for remelting in the manufacture of both foundry and pressure die castings. Castings made from these ingots are specified in Specification B86, Standard Specification for Zinc and Zinc-Aluminum Alloys for Foundry and Die Castings.

1.3?The values stated in inch-pound units are to be regarded as standard. No other units of measurement are included in this standard.

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

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 Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use.

1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

B86-23

Standard Specification for Zinc and Zinc-Aluminum (ZA) Alloy Foundry and Die Castings

B897-23

Standard Specification for Configuration of Zinc and Zinc Alloy Jumbo, Block, Half Block, and Slab Ingot

B949-23

Standard Specification for General Requirements for Zinc and Zinc Alloy Products

E29-22

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

ISO 301

Zinc Alloy Ingots Intended for Casting

ISO 3815–1

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

Methods for Emission Spectrochemical AnalysisMethods for Emission Spectrochemical Analysis: General Practices, Nomenclature, Standard Methods, Proposed Methods, Suggested Methods, ASTM International, 1982.

B899-21

Standard Terminology Relating to Non-ferrous Metals and Alloys

B908-22

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

E527-23

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

B275-14

Standard Practice for Codification of Certain Zinc, Tin and Lead Die Castings (Withdrawn 2020)

E536-23

Standard Test Methods for Chemical Analysis of Zinc and Zinc Alloys

ISO 3815–2

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