GB/T 20927-2026Recycled titanium raw material (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".

This document replaces GB/T 20927-2007 "Titanium and Titanium Alloy Waste". Compared with GB/T 20927-2007, the main differences are structural adjustments and revisions.

Aside from the logical changes, the main technical changes are as follows.

a) The terminology and definitions have been changed (see Chapter 3, Chapter 3 of the 2007 edition);

b) The classification and labeling have been changed (see Chapter 4, Chapter 4 of the 2007 edition);

c) The chemical composition requirements have been changed (see 5.1, 5.2 in the 2007 edition);

d) Appearance quality has been changed (see 5.2, 5.3 and 5.7 in the 2007 version);

e) Metallurgical quality was changed (see 5.3, 5.4 in the 2007 edition);

g) The inspection rules have been changed (see Chapter 7, Chapter 7 of the 2007 edition);

h) Changes were made to the markings, packaging, transport, storage, and accompanying documentation (see Chapter 8, Chapter 8 of the 2007 edition);

i) Added purchase order details (see Chapter 9).

1 Scope

Accompanying documents and order details.

This document applies to titanium and titanium alloy raw materials that have been preliminarily sorted and recycled.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 3620.1 Grades and Chemical Compositions of Titanium and Titanium Alloys

GB/T 3620.2 Permissible Deviations in Chemical Composition of Titanium and Titanium Alloy Processed Products

GB/T 4698 (all parts) Chemical analysis methods for sponge titanium, titanium and titanium alloys

GB/T 6611 Terminology and Illustrations for Titanium and Titanium Alloys

GB/T 8180 Packaging, marking, transportation and storage of titanium and titanium alloy processed products

GB/T 15073 Cast titanium and titanium alloys

GB/T 45057 Recycled Titanium Ingots

YS/T 1262 Chemical Analysis Methods for Sponge Titanium, Titanium and Titanium Alloys. Determination of Multi-Element Content by Inductively Coupled Plasma Atomic Emission System Spectroradiography

3 Terms and Definitions

The terms and definitions defined in GB/T 6611 and GB/T 45057, as well as the following terms and definitions, apply to this document.

4 Classification and Labeling