ASTM-B793:16(R2021) pdf free download – Standard Specification for Zinc Casting Alloy Ingot for Sheet Metal Forming Dies and Plastic Injection Molds.
3.2.2 plastic injection molds, n—molds used for the production of plastic parts by pressure injection of molten or semi-molten plastic.
3.2.3 sheet izetal forming die, il—a die or pattern used to form sheet metal into a finished or semi-finished shape using mechanical force to make the sheet metal conform to the shape of the die, often a pair of dies with a positive and negative face between which sheet metal is shaped under high pressure.
4. Ordering Information
4. 1 Orders for zinc alloy ingot under this specification shall include information as specified in Specification B949.
5. Chemical Requirements
5.1 Limits—The alloy shall conform to the requirements as to chemical composition prescribed in Table 1.
5.2 Chemical requirement procedures shall be in compliance with the provisions of Specification B949.
6. Sampling for Chemical Analysis
6.1 Sampling procedures shall be in compliance with the provisions of Specification B949.
7. Method of Chemical Analysis
7.1 The determination of chemical composition shall he made in accordance with Test Methods E536, or ISO 3815-1, or ISO 38 15-2 or other methods. In case of dispute, the results secured by Test Methods E536, or ISO 38 15-1, or ISO 3815-2 shall be the basis of acceptance.
NOTE 1—Test Methods E536 is not directly applicable to the alloys in Specification B793. ISO 38 15-1 and ISO 38 15-2 are generic methods applied to zinc and zinc alloys. Each of the methods may be modified and formatted for the alloy to be assayed. An experienced chemist, using suitable and/or traceable standards along with valid quality assurance techniques. will be able to perform and validate the methods and demonstrate acceptable precision and accuracy.
8. Materials and Manufacture
8.1 The alloys may he made by any approved process.
8.2 The material covered by this specification shall be of uniform quality and shall he free from dross, slag, or other harmful contamination.
8.3 Jumbo or block ingots shall conform to configuration shown in Specification B 897, or to a shape and size previously agreed upon.
9. Physical Properties — NA
10. Mechanical Properties — NA
11. Dimensions, Mass, and Permissible Variation, and Shapes and Sizes — NA
12. Workmanship, Finish, and Appearance — NA
13. Inspection
13.1 Source inspection shall be in compliance with the provisions of Specification B949.
14. Rejection and Rehearing
14. 1 See appropriate requirements in Specification B949.
15. CertifIcation
15.1 See appropriate requirements in Specification B949.
16. Product Identification Marking and Packaging
16.1 Each slab, block, jumbo or ingot shall he marked for identification in accordance with the provisions of Specification B949.
17. Keywords
17.1 blanking dies; casting; casting alloys; forming dies; gravity casting: Kirksite; Kirksite A: Kirksite B; sheet metal dies; zinc.