ISO 19690-2:2018/Amd 1:2025

Overview

ISO 19690-2:2018/Amd 1:2025 is an important amendment to the international standard governing disc springs, specifically addressing the technical specifications related to their durability. Published by the International Organization for Standardization (ISO), this amendment introduces an updated durability chart for not shot peened springs, categorized as group 3 springs. This technical update enhances the guidance for manufacturers, engineers, and quality control specialists working with disc springs to ensure reliability and performance over their expected lifespan.

Key Topics

• Disc Springs Technical Specifications
  This amendment builds on ISO 19690-2:2018 by providing refined technical data critical to disc spring design and application.

• Durability Chart Update
  The core of this amendment is a revised durability chart that specifies the fatigue life of not shot peened disc springs (group 3). The chart correlates maximum and minimum fatigue stresses (measured in N/mm²) with the number of cycles for fatigue life, enhancing accuracy in anticipating spring performance and wear.

• Fatigue Life Parameters
  The amendment clarifies fatigue life in terms of cycles:

  • a) 1 × 10^5 cycles
  • b) 5 × 10^5 cycles
  • c) 2 × 10^6 cycles
    These precise figures assist in durability testing protocols and quality assurance processes.

• Compliance and Implementation
  This document aligns with ISO/IEC Directives ensuring global harmonization of standards, with considerations for patent rights and intellectual property within the implementation framework.

Applications

• Mechanical Engineering
  Engineers can utilize the updated durability data to optimize the design and material selection of disc springs, minimizing failure risks under cyclic loading.

• Automotive and Aerospace Industries
  The improved fatigue life chart assists designers in selecting appropriate not shot peened springs ensuring safety and performance in critical applications subject to repetitive stress.

• Manufacturing and Quality Control
  Manufacturers benefit from standardized fatigue testing criteria, leading to consistent production quality. This amendment helps in establishing clear benchmarks for spring fatigue testing and lifecycle assessment for group 3 springs.

• Maintenance and Reliability Engineering
  Technical personnel responsible for maintenance can better predict spring lifespan and schedule preemptive replacements, thus reducing downtime and enhancing system reliability.

Related Standards

• ISO 19690-1:2018 – Disc Springs – Part 1: Terminology and dimensions
  Provides the foundational terminology and dimension standards complementing the technical specifications in Part 2.

• ISO/IEC Directives, Part 1 and Part 2 – Guidelines for the development and maintenance of ISO standards ensuring consistent editorial rules and procedural compliance.

• Other ISO TC 227 Standards on Springs
  The ISO Technical Committee 227 oversees standards related to springs, providing a comprehensive framework for various spring types and applications.

The ISO 19690-2:2018/Amd 1:2025 amendment is essential for stakeholders involved in the lifecycle management of disc springs-facilitating improved prediction of fatigue performance, enhancing safety, and supporting the global harmonization of spring durability standards. For engineers and manufacturers committed to quality and durability in mechanical spring components, adherence to this updated standard is crucial.

For more details and access to the full documents, visit the ISO official website.