GB/T 3429-2025 Wire rods for welding English, Anglais, Englisch, Inglés, えいご
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ICS 77.140.60 CCS H 44
People's Republic of China National Standard
GB/T 3429-2025 Replaces GB/T 3429-2015, GB/T 33958-2017, GB/T 33964-2017
Wire Rods for Welding
Issued: 2025-08-29
Implemented: 2026-03-01
Issued by:
State Administration for Market Regulation
Standardization Administration of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Designation System
5 Order Information
6 Manufacturing Process
7 Technical Requirements
8 Test Methods
9 Inspection Rules
10 Packaging, Marking and Quality Certificate
Appendix A (Normative) Mechanical Property Requirements for Certain Wire Rods
Appendix B (Informative) Cross-reference Table of Wire Rod Grades
References
1 Scope
This document specifies the designation system, order information, manufacturing process, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for welding steel wire rods.
It applies to steel wire rods (hereinafter referred to as wire rods) used for manufacturing welding materials such as stick electrodes, submerged arc welding, electroslag welding, gas-shielded welding, laser hybrid welding and additive manufacturing.
2 Normative References
The following documents contain provisions which, through reference in this text, constitute essential requirements:
GB/T 223 (All parts) Chemical analysis methods for iron, steel and alloys
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 2101 General provisions for acceptance, packaging, marking and quality certificate of section steel
GB/T 2975 Steel and steel products - Location and preparation of test pieces for mechanical testing
GB/T 4336 Carbon and low alloy steels - Determination of multi-element contents - Spark discharge atomic emission spectrometry (routine method)
GB/T 10561 Steel - Determination of non-metallic inclusion contents - Standard diagrams for microscopic assessment
GB/T 13298 Metallographic methods for microstructure examination
GB/T 14981-2009 Hot rolled round wire rods - Dimensions, shape, weight and tolerances
GB/T 20066 Steel and iron - Sampling and sample preparation for chemical analysis
GB/T 20123 Steel - Determination of total carbon and sulfur content - Infrared absorption method after combustion in a high-frequency furnace (routine method)
GB/T 20125 Low alloy steels - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometry
GB/T 20126 Non-alloy steels - Determination of low carbon content - Part 2: Infrared absorption method after combustion in an induction furnace (preheated)
GB/T 22368 Low alloy steels - Determination of multi-element contents - Glow discharge atomic emission spectrometry (routine method)
YB/T 081 Numerical rounding of metallurgical technical standards and judgment of test values
3 Terms and Definitions
This document contains no terms requiring definition.
4 Designation System
The grade designation of welding steel wire rods consists of four parts:
a) First part: Chinese phonetic initial H (capital) representing welding steel;
b) Second part: Carbon content (mass fraction);
c) Third part: Main alloying elements arranged in sequence of Mn, Si, Cr, Ni, Mo, Cu, V, Ti, B, Zr, Al. Unlisted elements are arranged in order of content after Al;
d) Fourth part: Steel metallurgical quality. Advanced high-quality steel and special high-quality steel are denoted by A and E respectively, while high-quality steel is unmarked.
