GB/T 14996-2025Wrought superalloy — Cold-rolled sheets and strips (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 supersedes GB/T 14996-2010 "High Temperature Alloy Cold Rolled Sheet" and GB/T 25827-2010 "General Purpose of High Temperature Alloy Sheet (Strip) Materials".

Technical Requirements. This document is based on GB/T 14996-2010 and incorporates content from GB/T 25827-2010.This document and...

Compared with GB/T 14996-2010, apart from structural adjustments and editorial changes, the main technical changes are as follows.

a) Added GH1140, GH2132, GH3030, GH3039, GH3044, GH3536, GH3625, GH4145, and GH4169.

and 10 high-temperature alloy grades of cold-rolled strip, including GH5188, and related technical requirements (see Chapter 6);

b) The recommended lower limit of the heat treatment temperature for solution treatment delivery of GH3128 alloy plates has been changed (see 6.2, Table 5 of the 2010 edition);

c) The technical requirements for dimensions and shape have been changed (see 6.8, Chapter 4 of the 2010 edition);

d) The test methods for chemical components have been changed (see 7.1, Table 10 of the 2010 edition);

e) The judgment and re-verification rules have been changed (see 8.4, 7.4 in the 2010 version).

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Iron and Steel Association.

This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183).

This document was drafted by: Fushun Special Steel Co., Ltd., Beijing Beiye Functional Materials Co., Ltd., and Antai Technology Co., Ltd.

Beijing Steel Research Institute Gaona Technology Co., Ltd., Haiyan Zhongda Metal Electronic Materials Co., Ltd., and Panzhihua Iron & Steel Group Jiangyou Great Wall Special Steel Co., Ltd.

Company, Metallurgical Industry Information and Standardization Research Institute, Beijing University of Science and Technology.

The main drafters of this document are: Chen Qingxin, Zhang Peng, Niu Yongji, Song Yanli, Xu Guohua, Zhang Yunheng, Xia Changlin, Wang Lin, Gu Qiang, and Deng Rui.

Liu Shuangjuan, Yan Chengming, Gu Yu, Yang Liang, Yao Zhihao, Feng Weifeng, Wei Yujun.

The release history of this document and the document it replaces is as follows.

— First published in 1982 as GB n180-19821, first revised in 1994 as GB/T 14996-1994, and in 2010 Second revision;

— This is the third revision and it has been incorporated into GB/T 25827-2010.

1 Scope

This document specifies the ordering details, manufacturing process, technical requirements, and inspection procedures for cold-rolled sheets and strips of wrought high-temperature alloys (hereinafter referred to as alloys).

The test rules, packaging, markings, and quality certificates describe the corresponding test methods.

This document applies to high-temperature alloy cold-rolled sheets (hereinafter referred to as sheets) with a nominal thickness of 0.50mm to 4.00mm and a nominal thickness of...

High-temperature alloy cold-rolled strip with a thickness of 0.10mm~1.30mm (of which GH4145, GH4169 and GH5188 alloy strips have a nominal thickness of...).

0.10mm~0.80mm (hereinafter referred to as strip).

2 Normative references

GB/T 222

GB/T 223

GB/T 228.1

GB/T 228.2

GB/T 230.1

GB/T 232

GB/T 235

GB/T 247

GB/T 708-2019

GB/T 2039

GB/T 4340.1

GB/T 6394

GB/T 8651

GB/T 11170

GB/T 14992

GB/T 14999.1

GB/T 20066

GB/T 20123

GB/T 20124

GB/T 20127

GB/T 38939

3 Terms and Definitions

The terms and definitions defined in GB/T 14992 apply to this document.

4 Order details

Contracts or orders placed in accordance with this document should include the following.

a) This document number;

b) Product Name;

c) Alloy grade;

d) Weight (or quantity);

e) Smelting methods (see 5.1);

f) Delivery status (see 5.2);

g) Size specifications;

h) Strip dimensional tolerance group (see 6.8.2.1);

i) Standard and multiple lengths (please specify if required);

j) Surface quality group of the sheet material (see 6.7.1.2);

k) Items or specifications to be negotiated by both the supplier and the buyer and specified in the contract (if not specified, the supplier shall select them);

l) Other special requirements.

5 Manufacturing process