ISO 16750-5-2023 PDF

Full title and description

St ISO 16750-5-2023 — Road vehicles — Environmental conditions and testing for electrical and electronic equipment — Part 5: Chemical loads. This international standard describes chemical agents and their effects on electrical and electronic systems and components mounted on/in road vehicles and specifies recommended tests and requirements for evaluating resistance and compatibility with those chemical loads.

Abstract

This part of ISO 16750 applies to electric and electronic systems and components for road vehicles (including electric propulsion systems within voltage class B). It identifies potential chemical stresses (fuels, lubricants, coolants, cleaning agents, de-icing fluids, battery and electrolyte-related substances, hydraulic fluids, etc.), and sets out test conditions, exposure procedures and evaluation guidance. It is not intended for continuous-immersion applications or for motorcycles and mopeds; continuous contact conditions are to be specified by agreement or by other standards where appropriate. Edition: 3 (2023).

General information

• Status: Published.
• Publication date: 13 July 2023.
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.040.10 (Electrical and electronic equipment for road vehicles).
• Edition / version: Edition 3 (2023).
• Number of pages: 9 pages (ISO published document).

Scope

ISO 16750-5:2023 specifies chemical loads relevant to electrical and electronic systems and components mounted on/in road vehicles and recommends tests and requirements appropriate to the mounting location. The scope covers identification of chemical agents likely to contact vehicle electronics, test exposures (concentration, temperature, duration, application method), and pass/fail evaluation methods for short‑term and intermittent contacts. It excludes motorcycle/moped systems and continuous immersion scenarios unless specifically agreed between supplier and customer or covered by other standards.

Key topics and requirements

• Identification and classification of chemical agents encountered in vehicle environments (fuels, engine/coolant fluids, lubricants, cleaning agents, salt solutions and de‑icing products, battery electrolytes, hydraulic fluids, adhesives, corrosion inhibitors, etc.).
• Guidance on test methods for chemical exposure: application method (spray/splash/immersion), concentrations, temperatures and exposure durations appropriate to mounting location and expected use.
• Material compatibility and selection criteria to reduce degradation (seals, coatings, connectors, housings, potting compounds).
• Pass/fail criteria and inspection procedures after exposure (electrical function, visual inspection, mechanical integrity, insulation resistance where applicable).
• Notes on exclusions and agreements: continuous contact/immersion conditions to be handled by specific agreements or other standards; consideration for electric propulsion and voltage class B equipment.
• Recommendation to select tests based on specific mounting location and vehicle application rather than applying all tests universally.

Typical use and users

ISO 16750-5:2023 is used by automotive OEMs, Tier 1/2 suppliers, design and materials engineers, environmental/test laboratories, quality and reliability teams, and certification bodies to define and run chemical‑resistance tests, select compatible materials and validate component designs for typical vehicle chemical exposures.

Related standards

ISO 16750-5 is part of the ISO 16750 series of environmental test standards for road-vehicle electrical/electronic equipment and is published alongside revised parts such as ISO 16750-1 (General), ISO 16750-2 (Electrical loads), ISO 16750-3 (Mechanical loads) and ISO 16750-4 (Climatic loads). ISO 16750-5:2023 supersedes ISO 16750-5:2010 (previous edition). For specialized drive-system EV requirements see related standards in the ISO automotive environmental testing family.

Keywords

Chemical loads; environmental testing; automotive electronics; chemical resistance; material compatibility; ISO 16750; road vehicles; electrical/electronic equipment; components testing; edition 2023.

FAQ

Q: What is this standard?

A: ISO 16750-5:2023 is Part 5 of the ISO 16750 series and specifies chemical loads and related test recommendations for electrical and electronic systems and components used in road vehicles.

Q: What does it cover?

A: It covers identification of chemical agents likely to contact vehicle electronics, recommended exposure/test conditions (method, concentration, temperature, duration), evaluation criteria and guidance on material selection and protection. It excludes continuous immersion unless otherwise agreed or specified by other standards, and does not apply to motorcycles/mopeds.

Q: Who typically uses it?

A: Automotive OEMs, suppliers (Tier 1/2), test laboratories, design/materials engineers, reliability and quality teams, and regulatory/certification bodies use it to define testing programs and validate component resistance to chemical exposure.

Q: Is it current or superseded?

A: ISO 16750-5:2023 (published 13 July 2023, edition 3) is the current edition and supersedes ISO 16750-5:2010.

Q: Is it part of a series?

A: Yes — it is Part 5 of the ISO 16750 series (Parts 1–4 cover general requirements, electrical, mechanical and climatic loads respectively). The series provides an overall framework for environmental conditions and testing of vehicle electrical/electronic equipment.

Q: What are the key keywords?

A: Chemical loads, environmental testing, automotive electronics, material compatibility, ISO 16750-5:2023, road vehicles, chemical resistance testing.