GB/T 6109.23-2025Enamelled round winding wire - Part 23: Solderable polyurethane enamelled round copper wire, class 180 (English PDF)
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Issued by
State Administration for Market Regulation
Level / Type
National · Recommended
Issue date
October 5, 2025
Implementation date
May 1, 2026
Scope
GB/T 6109.23-2025 (Enamelled round winding wire - Part 23: Solderable polyurethane enamelled round copper wire, class 180) is available as an English-translated PDF.
GB/T 6109.23-2025 — This document specifies the requirements for 180-grade direct-soldering enameled copper round wire with a single coating based on polyurethane resin.
If the original resin can be preserved... If the resin has chemical properties that meet all the requirements specified for the enameled wire, then the resin can be modified.
Note. Modified resin is a resin that has undergone chemical changes or contains one or more additives to improve its certain properties or performance characteristics.
The nominal diameter range of conductors specified in this document is. ---Level 1.0.018mm and above to 1.000mm and below; ---Level 2.0.020mm and above to 1.000mm and below.
The nominal diameter of the conductor shall conform to the provisions of Chapter 4 of GB/T 6109.1-2025.
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Document preview — GB/T 6109.23-2025
National Standard of the People's Republic of China
- ICS
- 29.060.01
- Classification
- K 12
- Replacing
- GB/T 6109.23-2008
Issued by: State Administration for Market Regulation
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative References
- 3 Terms, Definitions, General Rules, and Appearance
- 3.1 Terms and Definitions
- 3.2 General Rules
- 3.3 Appearance
- 4 Dimensions
- 5 Resistors
- 6 Elongation
- 7 Resilience
- 8 Flexibility and adhesion
- 9 Thermal shock
- 10 Softening and Breakdown
- 11 Scratch resistance (conductor nominal diameter 0.250mm and above to 1.000mm and below)
- 12 Solvent resistant
- 13 Breakdown voltage
- 14 Coating film continuity
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 is Part 23 of GB/T 6109 "Enamelled Round Winding Wire". GB/T 6109 has already published the following parts.
---Part 1: General Provisions;
---Part 2: Grade 155 Polyester Enameled Copper Round Wire;
---Part 3: Grade 120 acetal enameled copper round wire;
---Part 4: Grade 130 direct-welding polyurethane enameled copper round wire;
---Part 5: Grade 180 Polyesterimide Enameled Copper Round Wire;
---Part 6: Grade 220 polyimide enameled copper round wire;
---Part 7.130L grade polyester enameled copper round wire;
---Part 9: Grade 130 Polyamide Composite Direct Soldering Polyurethane Enameled Copper Round Wire;
---Part 10: Grade 155 direct-welding polyurethane enameled copper round wire;
---Part 11: Grade 155 Polyamide Composite Direct Soldering Polyurethane Enameled Copper Round Wire;
---Part 12: Grade 180 polyamide composite polyester or polyesterimide enameled copper round wire;
---Part 13: Grade 180 direct-welding polyesterimide enameled copper round wire;
---Part 14: Grade.200 polyamide-imide enameled copper round wire;
---Part 15: Grade 130 self-adhesive direct-soldering polyurethane enameled copper round wire;
---Part 16: Grade 155 self-adhesive direct-soldering polyurethane enameled copper round wire;
---Part 17: Grade 180 self-adhesive direct-soldering polyesterimide enameled copper round wire;
---Part 18: Grade 180 self-adhesive polyesterimide enameled copper round wire;
---Part 19: Grade.200 self-adhesive polyamide-imide composite polyester or polyesterimide enameled copper round wire;
---Part 20: Grade.200 polyamide-imide composite polyester or polyesterimide enameled copper round wire;
---Part 21: Grade.200 Polyester-Amide-Imine Enameled Copper Round Wire;
---Part 22: Grade 240 Aromatic Polyimide Enameled Copper Round Wire;
---Part 23: Grade 180 direct-welding polyurethane enameled copper round wire.
This document replaces GB/T 6109.23-2008 "Enamelled Round Winding Wire Part 23: Grade 180 Straight-Welded Polyurethane Enamelled Copper Round Wire", and is consistent with...
Compared with GB/T 6109.23-2008, apart from structural adjustments and editorial changes, the main technical changes are as follows.
---Added the "Method for Representing Winding Wire Products" to the general rules (see 3.2.2);
---The nominal conductor diameter range and maximum immersion time in "Straight Solderability" have been changed (see Chapter 17, Chapter 17 in the 2008 edition);
---A "General Guidelines for Direct Weldability Testing" has been added (see 17.1);
---The requirements for the "pinhole test" have been changed (see Chapter 23, Chapter 23 of the 2008 edition).
This document is equivalent to IEC 60317-51:2014 "Special winding wire product standard Part 51: Grade 180 direct solder polyurethane enameled copper".
Circular line.
The following minimal editorial changes have been made to this document.
---To harmonize with existing standards, the standard name has been changed to "Enameled Circular Winding Wire Part 23: Grade 180 Direct-Solder Polyurethane Enameled Copper".
Circular line.
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 Electrical Equipment Industry Association.
This document is under the jurisdiction of the National Technical Committee on Standardization of Wires and Cables (SAC/TC213).
Introduction
Enamelled round winding wire is a major supporting raw material in the fields of power, motors, electrical appliances, home appliances, electronics, communications, transportation, power grids, and aviation.
First, it has a wide range of applications and covers many fields, and has become an important mechanical industrial product.
GB/T 6109 "Enamelled Round Winding Wire" is the basic standard for enamelled round winding wire products, and it is proposed to consist of the following 22 parts.
---Part 1: General Requirements. This section specifies the performance requirements for self-adhesive or non-self-adhesive enameled copper round windings.
---Part 2: Grade 155 Polyester Enameled Copper Round Wire. The purpose is to specify Grade 155 enameled copper wire with a single enamel layer based on polyester resin.
Performance requirements for circular wires.
---Part 3: Grade 120 Acetal Enameled Copper Round Wire. The purpose is to specify Grade 120 for single-layer enamel coatings based on polyvinyl acetal resin.
Performance requirements for enameled copper round wire.
---Part 4: Grade 130 direct-soldering polyurethane enameled copper round wire. The purpose is to specify Grade 130 single-layer polyurethane resin-based enamel coatings.
Performance requirements for direct-welded enameled copper round wire.
---Part 5: Grade 180 Polyesterimide Enameled Copper Round Wire. The purpose is to specify Grade 180 for single-layer polyesterimide enamel coatings.
Performance requirements for enameled copper round wire.
---Part 6: Grade 220 Polyimide Enameled Copper Round Wire. The purpose is to specify Grade 220 for single-layer polyimide enamel coatings.
Performance requirements for enameled copper round wire.
---Part 7.130L Grade Polyester Enameled Copper Round Wire. The purpose is to specify 130L grade enameled wire with a single enamel coating based on polyester resin.
Performance requirements for copper round wire.
---Part 9: Grade 130 Polyamide Composite Direct Soldering Polyurethane Enameled Copper Round Wire. The purpose is to specify the Grade 130 direct soldering enamel wire with a double-layer coating.
The performance requirements for copper-clad round wires include a primer layer based on polyurethane resin and a topcoat layer based on polyamide resin.
---Part 10: Grade 155 direct-soldering polyurethane enameled copper round wire. The purpose is to specify Grade 155 single-coat polyurethane resin-based wires.
Performance requirements for direct-welded enameled copper round wire.
---Part 11: Grade 155 Polyamide Composite Direct Soldering Polyurethane Enameled Copper Round Wire. The purpose is to specify the grade 155 direct soldering enamel wire with a double-layer coating.
The performance requirements for copper-clad round wires include a primer layer based on polyurethane resin and a topcoat layer based on polyamide resin.
---Part 12: Grade 180 polyamide composite polyester or polyesterimide enameled copper round wire. The purpose is to specify a Grade 180 enameled wire with double coatings.
The performance requirements for copper-clad round wires include a primer layer based on polyester or polyesterimide resin and a topcoat layer based on polyamide resin.
---Part 13: Grade 180 direct-soldering polyesterimide enameled copper round wire. The purpose is to specify a single-layer enamel coating based on polyesterimide resin.
Performance requirements for Grade 180 direct-welding enameled copper round wire.
---Part 14: Grade.200 polyamide-imide enameled copper round wire. The purpose is to specify single-component polyamide-imide resin-based...
Performance requirements for.200-grade enameled copper round wire.
---Part 15: Grade 130 Self-adhesive Direct Soldering Polyurethane Enamelled Copper Round Wire. The purpose is to specify Grade 130 self-adhesive direct soldering wire with double coating.
The performance requirements for enameled copper round wires include a primer layer based on polyurethane resin and a topcoat layer based on thermoplastic resin, which is a self-adhesive layer.
---Part 16: Grade 155 Self-Adhesive Straight Soldering Polyurethane Enameled Copper Round Wire. The purpose is to specify Grade 155 self-adhesive straight soldering wire with double coating.
The performance requirements for enameled copper round wires include a primer layer based on polyurethane resin and a topcoat layer based on thermoplastic resin, which is a self-adhesive layer.
---Part 17: Grade 180 Self-adhesive Straight Solderable Polyesterimide Enameled Copper Round Wire. The purpose is to specify Grade 180 self-adhesive straight solderable wire with double coating.
The performance requirements for soldering enameled copper round wires, wherein the primer layer is based on polyesterimide resin and the topcoat layer is based on thermoplastic resin.
Adhesive layer.
---Part 18: Grade 180 self-adhesive polyesterimide enameled copper round wire. The purpose is to specify the grade 180 self-adhesive enameled copper wire with double coating.
The performance requirements for round wires include a primer layer based on polyesterimide resin and a topcoat layer based on thermoplastic resin, which is a self-adhesive layer.
---Part 19: Grade.200 self-adhesive polyamide-imide composite polyester or polyesterimide enameled copper round wire. The purpose is to specify the three-layer coating.
The performance requirements for grade.200 enameled copper round wires include a primer layer based on polyester or polyesterimide resin, and an intermediate layer based on polyamide.
A self-adhesive layer with an imide resin base and a topcoat layer based on a thermoplastic or thermosetting resin.
---Part 20: Grade.200 polyamide-imide composite polyester or polyesterimide enameled copper round wire. The purpose is to specify double-layer enameling.
The performance requirements for Grade.200 enameled copper round wire include a primer layer based on polyester or polyesterimide resin, and a topcoat layer based on polyamide-imide resin.
It is based on amine resin.
---Part 21: Grade.200 Polyester-Amide-Imine Enameled Copper Round Wire. The purpose is to specify the type of polyester-amide-imide resin-based...
Performance requirements for a single-layer,.200-grade enameled copper round wire.
---Part 22: Grade 240 Aromatic Polyimide Enameled Copper Round Wire. The purpose is to specify single-component aromatic polyimide resin-based...
Performance requirements for 240-grade enameled copper round wire.
---Part 23: Grade 180 direct-soldering polyurethane enameled copper round wire. The purpose is to specify Grade 180 for single-layer polyurethane resin-based enamel coatings.
Performance requirements for direct-welded enameled copper round wire.
This document needs to be used in conjunction with GB/T 6109.1-2025.
Enameled round winding wire Part 23: Grade 180 Straight Welding Polyurethane enameled copper round wire
1 Scope
This document specifies the requirements for 180-grade direct-soldering enameled copper round wire with a single coating based on polyurethane resin. If the original resin can be preserved...
If the resin has chemical properties that meet all the requirements specified for the enameled wire, then the resin can be modified.
Note. Modified resin is a resin that has undergone chemical changes or contains one or more additives to improve its certain properties or performance characteristics.
The nominal diameter range of conductors specified in this document is.
---Level 1.0.018mm and above to 1.000mm and below;
---Level 2.0.020mm and above to 1.000mm and below.
The nominal diameter of the conductor shall conform to the provisions of Chapter 4 of GB/T 6109.1-2025.
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 6109.1-2025 Enamelled round windings – Part 1: General requirements (IEC 60317-0-1:2019, IDT) Note. The content referenced in GB/T 6109.1-2025 is not technically different from the content referenced in IEC 60317-0-1:2013.
3 Terms, Definitions, General Rules and Appearance
3.1 Terms and Definitions
The terms and definitions defined in GB/T 6109.1-2025 apply to this document.
3.2 General Rules
3.2.1 Test Methods
If there is any conflict between GB/T 6109.1-2025 and this document, this document shall prevail.
3.2.2 Method for representing winding wire products
Class 180 indicates the thermal class, which requires a minimum temperature index of 180 and a thermal shock temperature of at least.200°C.
The Celsius temperature corresponding to the temperature index is not necessarily the recommended operating temperature for enameled wire, as this depends on factors including the type of equipment used.
Many internal factors.
3.3 Appearance
Section 3.3 of GB/T 6109.1-2025 applies.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 12 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 6109.1-2025 — Enamelled round winding wire - Part 1: General requirements
GB/T 6109.10-2008 — Enamelled round winding wire -- Part 10: Solderable polyurethane enamelled round copper wire, class 155
GB/T 6109.11-2025 — Enamelled round winding wire - Part 11: Solderable polyurethane enamelled round copper wireovercoated with polyamide, class 155
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