GB/T 26038-2023Tungsten base,high-density alloy plate (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document replaces GB/T 26038-2010 "Tungsten-based High Specific Gravity Alloy Sheets". Compared with GB/T 26038-2010, except for structural adjustments In addition to editorial changes, the main technical changes are as follows.

a) The applicable limits of the scope have been changed (see Chapter 1, Chapter 1 of the 2010 edition);

b) Added the grades, specifications and technical requirements of 90WNiCu, 93WNiCu and 95WNiCu (see 4.1, 5.1, 5.3, 5.4);

c) Added requirements for the status, specifications, dimensions and allowable deviations, density, hardness and mechanical properties of sintered products (see 4.1, 5.2.1, 5.3, 5.4.1);

d) Changed the requirements for product chemical composition (see 5.1, 3.2 of the 2010 edition);

e) The requirements for the outer dimensions of rolled products and their allowable deviations and unevenness have been changed (see 5.2, 3.4 of the 2010 edition);

f) Changed the requirements for mechanical properties of rolled products (see 5.4.2, 3.5 of the 2010 edition);

g) The requirements for the analysis method of product chemical composition have been changed (see 6.1, 4.1 of the 2010 edition);

h) The density inspection method has been changed (see 6.3.1, 4.2 of the 2010 edition), and the hardness inspection method has been added (see 6.3.2);

i) Changed the requirements for product appearance quality (see 6.5, 3.6 of the 2010 edition);

j) Changed the sampling requirements (see 7.4, 5.4 of the 2010 version);

k) Packaging requirements have been changed (see 8.2.1, 6.2 of the 2010 edition).

1 Scope

This document stipulates the classification and marking, technical requirements, test methods, inspection rules, marking, packaging and transportation of tungsten-based high specific gravity alloy plates. Transmit, store and accompany documents and order form contents.

This document applies to tungsten-based high specific gravity alloy sheets produced by sintering and rolling processes.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.

GB/T 228.1 Tensile testing of metallic materials Part 1: Room temperature test method

GB/T 230.1 Rockwell hardness test of metallic materials Part 1: Test methods

GB/T 3850 Density determination method of dense sintered metal materials and cemented carbide

YS/T 1603 (all parts) Chemical analysis method for tungsten-based high specific gravity alloys

3 Terms and definitions

There are no terms or definitions to be defined in this document.

4 Classification and tagging