GB 29743.3-2025 Motor vehicle coolant—Part 3: Fuel cell vehicle coolant English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 03.220.20
CCS R 16
People's Republic of China National Standard
GB 29743.3-2025
Motor Vehicle Coolant—Part 3: Fuel Cell Vehicle Coolant
Issued on August 29, 2025 Effective from March 1, 2026
Issued by the State Administration for Market Regulation and the Standardization Administration of China
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Product Classification
5 Technical Requirements and Test Methods
6 Inspection Rules
7 Marking, Packaging, Transportation and Storage
Annex A (Normative) Electroconductivity Test Method for Fuel Cell Coolants
Annex B (Normative) Thermodynamic Parameter Test Method for Fuel Cell Coolants
Annex C (Normative) Static Corrosion Test Method for Fuel Cell Coolants
Annex D (Normative) Bench Corrosion Test Method for Circulating Fuel Cell Coolants
Annex E (Normative) Compatibility Test Method with Plastic Materials
Annex F (Normative) Stability Test Method for Fuel Cell Coolants
1 Scope
This document specifies the product classification, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of fuel cell vehicle coolant.
It applies to the production, inspection, and use of fuel cell vehicle coolants prepared with ethylene glycol as the primary antifreeze agent for thermal management systems in fuel cell stacks.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the cited version applies; for undated references, the latest version (including amendments) applies.
GB/T 3190 Wrought Aluminum and Aluminum Alloy Chemical Compositions
GB/T 3620.1 Titanium and Titanium Alloy Designations and Chemical Compositions
GB/T 5231 Wrought Copper and Copper Alloy Designations and Chemical Compositions
GB/T 6682-2008 Water for Analytical Laboratory Use
GB/T 15115 Die-Cast Aluminum Alloys
GB/T 20878 Stainless Steel Designations and Chemical Compositions
GB 29743.2-2025 Motor Vehicle Coolant—Part 2: Electric Vehicle Coolant
GB/T 39937-2021 Plastic Products—Polypropylene (PP) Extruded Sheets
GB/T 40169-2021 Ultra-High Molecular Weight Polyethylene (PE-UHMW) and High-Density Polyethylene (PE-HD) Molded Sheets
JT/T 1230 Determination of Inorganic Anions in Engine Coolants by Ion Chromatography
NB/SH/T 0164 Packaging, Storage, and Delivery Acceptance Rules for Petroleum Products
NB/SH/T 0828 Determination of Silicon and Other Elements in Engine Coolants by ICP-AES
SH/T 0065 Sampling and Preparation of Aqueous Solutions for Coolant Testing
SH/T 0066 Foaming Tendency Test for Engine Coolants (Glassware Method)
SH/T 0067 Ash Content Determination for Engine Coolants
SH/T 0068 Density/Relative Density Test for Engine Coolants (Hydrometer Method)
SH/T 0069 pH Test for Engine Antifreeze, Rust Inhibitors, and Coolants
SH/T 0084 Organic Paint Compatibility Test for Coolant Solutions
SH/T 0086 Water Content Determination in Coolant Concentrates (Karl Fischer Method)
SH/T 0089 Boiling Point Test for Engine Coolants
SH/T 0090 Freezing Point Test for Engine Coolants
SH/T 0604 Density Test for Crude Oil and Petroleum Products (U-Tube Vibrational Method)
3 Terms and Definitions
3.1 Fuel Cell Vehicle Coolant
A functional liquid composed of antifreeze agents, corrosion inhibitors, etc., used in fuel cell stack thermal management systems for cooling, insulation, corrosion protection, and anti-freezing.
Note: Coolant directly extracted from original packaging may be referred to as "stock solution," which can be either concentrated or prediluted.
3.2 Fuel Cell Vehicle Coolant Concentrate
A coolant with ≤5% water content, diluted before use in fuel cell systems.
3.3 Fuel Cell Vehicle Coolant Predilute
A coolant with a specified freezing point, ready for direct use in fuel cell systems.
4 Product Classification
Fuel cell vehicle coolants (hereinafter "FCVC") shall be classified, coded, and modeled per Table 1.
5 Technical Requirements and Test Methods
5.1 General Requirements
FCVC shall comply with Table 2.
5.2 Physicochemical Properties
FCVC shall meet the requirements in Table 3.
5.3 Performance Requirements
FCVC shall comply with Table 4.
(Tables 1-4 are omitted here but would include detailed specifications for classification, general properties, physicochemical parameters, and performance tests.)
GB 29743.3-2025 Motor vehicle coolant—Part 3: Fuel cell vehicle coolant English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing thorugh draft translation, self-check, revision and varification) will be delivered upon being ordered.
ICS 03.220.20
CCS R 16
People's Republic of China National Standard
GB 29743.3-2025
Motor Vehicle Coolant—Part 3: Fuel Cell Vehicle Coolant
Issued on August 29, 2025 Effective from March 1, 2026
Issued by the State Administration for Market Regulation and the Standardization Administration of China
Contents
Foreword
Introduction
1 Scope
2 Normative References
3 Terms and Definitions
4 Product Classification
5 Technical Requirements and Test Methods
6 Inspection Rules
7 Marking, Packaging, Transportation and Storage
Annex A (Normative) Electroconductivity Test Method for Fuel Cell Coolants
Annex B (Normative) Thermodynamic Parameter Test Method for Fuel Cell Coolants
Annex C (Normative) Static Corrosion Test Method for Fuel Cell Coolants
Annex D (Normative) Bench Corrosion Test Method for Circulating Fuel Cell Coolants
Annex E (Normative) Compatibility Test Method with Plastic Materials
Annex F (Normative) Stability Test Method for Fuel Cell Coolants
1 Scope
This document specifies the product classification, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of fuel cell vehicle coolant.
It applies to the production, inspection, and use of fuel cell vehicle coolants prepared with ethylene glycol as the primary antifreeze agent for thermal management systems in fuel cell stacks.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the cited version applies; for undated references, the latest version (including amendments) applies.
GB/T 3190 Wrought Aluminum and Aluminum Alloy Chemical Compositions
GB/T 3620.1 Titanium and Titanium Alloy Designations and Chemical Compositions
GB/T 5231 Wrought Copper and Copper Alloy Designations and Chemical Compositions
GB/T 6682-2008 Water for Analytical Laboratory Use
GB/T 15115 Die-Cast Aluminum Alloys
GB/T 20878 Stainless Steel Designations and Chemical Compositions
GB 29743.2-2025 Motor Vehicle Coolant—Part 2: Electric Vehicle Coolant
GB/T 39937-2021 Plastic Products—Polypropylene (PP) Extruded Sheets
GB/T 40169-2021 Ultra-High Molecular Weight Polyethylene (PE-UHMW) and High-Density Polyethylene (PE-HD) Molded Sheets
JT/T 1230 Determination of Inorganic Anions in Engine Coolants by Ion Chromatography
NB/SH/T 0164 Packaging, Storage, and Delivery Acceptance Rules for Petroleum Products
NB/SH/T 0828 Determination of Silicon and Other Elements in Engine Coolants by ICP-AES
SH/T 0065 Sampling and Preparation of Aqueous Solutions for Coolant Testing
SH/T 0066 Foaming Tendency Test for Engine Coolants (Glassware Method)
SH/T 0067 Ash Content Determination for Engine Coolants
SH/T 0068 Density/Relative Density Test for Engine Coolants (Hydrometer Method)
SH/T 0069 pH Test for Engine Antifreeze, Rust Inhibitors, and Coolants
SH/T 0084 Organic Paint Compatibility Test for Coolant Solutions
SH/T 0086 Water Content Determination in Coolant Concentrates (Karl Fischer Method)
SH/T 0089 Boiling Point Test for Engine Coolants
SH/T 0090 Freezing Point Test for Engine Coolants
SH/T 0604 Density Test for Crude Oil and Petroleum Products (U-Tube Vibrational Method)
3 Terms and Definitions
3.1 Fuel Cell Vehicle Coolant
A functional liquid composed of antifreeze agents, corrosion inhibitors, etc., used in fuel cell stack thermal management systems for cooling, insulation, corrosion protection, and anti-freezing.
Note: Coolant directly extracted from original packaging may be referred to as "stock solution," which can be either concentrated or prediluted.
3.2 Fuel Cell Vehicle Coolant Concentrate
A coolant with ≤5% water content, diluted before use in fuel cell systems.
3.3 Fuel Cell Vehicle Coolant Predilute
A coolant with a specified freezing point, ready for direct use in fuel cell systems.
4 Product Classification
Fuel cell vehicle coolants (hereinafter "FCVC") shall be classified, coded, and modeled per Table 1.
5 Technical Requirements and Test Methods
5.1 General Requirements
FCVC shall comply with Table 2.
5.2 Physicochemical Properties
FCVC shall meet the requirements in Table 3.
5.3 Performance Requirements
FCVC shall comply with Table 4.
(Tables 1-4 are omitted here but would include detailed specifications for classification, general properties, physicochemical parameters, and performance tests.)
