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GB/T 46428.1-2025Metallic materials - Miniature specimens of plate and rod - Part 1: Fatigue test method (English PDF)

金属材料　板状、棒状微型试样　第1部分：疲劳试验方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 46428.1-2025 is the English-translated version of 金属材料　板状、棒状微型试样　第1部分：疲劳试验方法.

GB/T 46428.1-2025 is the Chinese standard "Metallic materials - Miniature specimens of plate and rod - Part 1: Fatigue test method". Its scope clause reads: This document describes fatigue testing methods for plate-shaped and rod-shaped micro-samples of metallic materials, specifying the principles, samples, and testing apparatus of the test method.

The contents of the test setup, test procedures, data processing, and test report. This document applies to funnel-shaped homogeneous, isotropic metallic materials with a stress-strain relationship exhibiting a power law, and a thickness ranging from 0.6 mm to 2 mm.

Low-cycle fatigue test of plate-shaped specimens with constant amplitude. Low-cycle fatigue test of rod-shaped specimens shall be conducted in accordance with GB/T 26077. Its clauses include terms and definitions.

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Document preview — GB/T 46428.1-2025

National Standard of the People's Republic of China

ICS: 77.040.10
Classification: H 22

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

Preface
Introduction
1.Scope
2 Normative References
3.Terms and Definitions
4 Symbols
5.Principle
6 Sample
7.Experimental Apparatus
8.Test Procedure
9 Data Processing
10 Test Reports
Appendix A (Informative) Recommended Samples and Fixtures

1 Scope

This document describes fatigue testing methods for plate-shaped and rod-shaped micro-samples of metallic materials, specifying the principles, samples, and testing apparatus of the test method.

The contents of the test setup, test procedures, data processing, and test report.

This document applies to funnel-shaped homogeneous, isotropic metallic materials with a stress-strain relationship exhibiting a power law, and a thickness ranging from 0.6 mm to 2 mm.

Low-cycle fatigue test of plate-shaped specimens with constant amplitude. Low-cycle fatigue test of rod-shaped specimens shall be conducted in accordance with GB/T 26077.

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.

This document.

GB/T 10623 Terminology for Testing Mechanical Properties of Metallic Materials

GB/T 12160 Calibration of extensometer systems for uniaxial testing of metallic materials

GB/T 16825.1 Inspection and calibration of static uniaxial testing machines for metallic materials - Part 1.Measurement of tensile and/or compressive stresses by these machines

Inspection and calibration of force systems

GB/T 25917.1 Uniaxial fatigue testing systems - Part 1.Dynamic force calibration

JJG556 Verification Procedure for Axial Force Fatigue Testing Machine

3 Terms and Definitions

The terms and definitions defined in GB/T 10623 and the following terms and definitions apply to this document.

3.1

The curve showing the relationship between force and gauge length displacement in a single cycle of the experiment.

Note. The displacement of the gauge length segment is the product of the extensometer gauge length and the nominal strain. A typical force-displacement hysteresis loop is shown in Figure 1.

Figure 1.Typical force-displacement hysteresis loop

GB/T 46591.1 | GB/T 44030 | GB/T 43115 | GB/T 12443 | GB/T 10128 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46428.1

Edition	Title	Revision	Status
GB/T 46428.1-2025	Metallic materials - Miniature specimens of plate and rod - Part 1: Fatigue test method	current edition	Current

This page sells the current edition, GB/T 46428.1-2025. Earlier editions are listed for reference only.

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