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GB/T 45983.1-2025Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding (English PDF)

稀土化学热处理　第1部分：渗碳及碳氮共渗

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 1, 2025

Implementation date

February 1, 2026

Scope

GB/T 45983.1-2025 is the English-translated version of 稀土化学热处理　第1部分：渗碳及碳氮共渗.

GB/T 45983.1-2025 is the Chinese standard "Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding".

Its scope clause reads: This document specifies the process code, workpiece to be treated, rare earth penetrant, equipment, process and process control, quality inspection, etc. Requirements for testing, safety, health and environmental protection, energy consumption and product reporting.

This document applies to gas carburizing and carbonitriding heat treatment of steel parts using methanol or nitrogen-methanol as carrier gas.

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Document preview — GB/T 45983.1-2025

National Standard of the People's Republic of China

ICS: 25.200
Classification: J 36

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Process code
5 Workpieces to be processed
6 Rare earth penetrant
7 devices
8 Technology and process control
9 Quality Inspection
10 Safety, Health and Environmental Protection
11 Energy consumption
12 Product Report
Appendix A (Informative) Physical and Chemical Properties of Main Rare Earth Salts

1 Scope

This document specifies the process code, workpiece to be treated, rare earth penetrant, equipment, process and process control, quality inspection, etc.

Requirements for testing, safety, health and environmental protection, energy consumption and product reporting.

This document applies to gas carburizing and carbonitriding heat treatment of steel parts using methanol or nitrogen-methanol as carrier gas.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 224 Determination of the depth of decarburization of steel

GB/T 230.1 Rockwell hardness test for metallic materials - Part 1.Test method

GB/T 4340.1 Metallic materials Vickers hardness test Part 1.Test method

GB/T 6394 Determination of average grain size of metals

GB/T 7232 Terminology for Metal Heat Treatment

GB/T 8121 Terminology of heat treatment process materials

GB/T 9450 Determination and verification of the depth of carburized and quenched hardened layer on steel parts

GB/T 9452 Determination of effective heating area of heat treatment furnace

GB/T 12603 Classification and codes of metal heat treatment processes

GB/T 13324 Terminology of heat treatment equipment

GB/T 15676 Rare Earth Terminology

GB 15735 Safety and hygiene requirements for metal heat treatment production processes

GB/T 15822.1 Non-destructive testing - Magnetic particle testing - Part 1.General principles

GB/T 16924 Quenching and tempering of steel parts

GB/T 17358 Calculation and determination methods for power consumption in heat treatment production

GB/T 19944 Calculation and determination methods for fuel consumption in heat treatment production

GB/T 25744 Metallographic examination of steel parts after carburizing, quenching and tempering

GB/T 30822 Technical requirements for heat treatment environmental protection

GB/T 30825 Heat treatment temperature measurement

GB/T 34889 Carburizing and carbonitriding quenching and tempering of steel parts

GB/T 37885 Classification of Chemical Reagents

GB 39176 Packaging, labeling, transportation and storage of rare earth products

JB/T 9218 Nondestructive Testing Penetrant Testing Method

JB/T 10312 Steel foil carbon potential method

GB/T 38720 | GB/T 38770 | GB/T 39191 | GB/T 30583 | GB/T 11354 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 45983.1

Edition	Title	Revision	Status
GB/T 45983.1-2025	Rare earths thermo-chemical treatment - Part 1: Carburizing and carbonitriding	current edition	Current

This page sells the current edition, GB/T 45983.1-2025. Earlier editions are listed for reference only.

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