ISO 10619-2-2021 PDF

Full title and description

ISO 10619-2:2021 — Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2: Bending tests at sub-ambient temperatures. This International Standard specifies test methods for determining the flexibility and stiffness of rubber and plastics hoses and tubing when bent to a defined radius under sub-ambient (below lab) temperature conditions; the standard is published as an electronic PDF by ISO and by national standards bodies.

Abstract

ISO 10619-2:2021 specifies two methods for measuring stiffness and one method for assessing flexibility of rubber and plastics hoses and tubing at sub-ambient temperatures. Method A is intended for non-collapsible hoses/tubing with bore up to 25 mm and measures stiffness while temperature is reduced from standard laboratory temperature. Method B is applicable to hoses/tubing with a bore up to 100 mm and assesses flexibility when bent around a mandrel at a specified sub-ambient temperature (also suitable for routine quality control). Method C is for non-collapsible hoses/tubing with bore 100 mm and greater and measures stiffness at sub-ambient temperatures.

General information

• Status: Published.
• Publication date: June 2021 (2021-06).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 23.040.70 (Hoses and hose assemblies / Rubber and plastics hoses and tubing).
• Edition / version: Edition 3 (2021).
• Number of pages: 10 pages.

Scope

This part of ISO 10619 provides standardized bending-test procedures for determining stiffness and flexibility of rubber and plastics hoses and tubing at temperatures below standard laboratory conditions. It defines three test methods (A, B and C) intended for different internal diameter ranges and for both routine quality-control and more detailed stiffness measurement. The procedures cover specimen preparation, test apparatus, temperature conditioning, test execution and reporting of results. Users wishing to assess hose performance in cold-service conditions or to perform comparative product testing use this part in conjunction with the ambient-temperature Part 1.

Key topics and requirements

• Definition of three bending-test methods for sub-ambient temperatures: Method A (stiffness, non-collapsible, bore ≤ 25 mm), Method B (flexibility, bore ≤ 100 mm, mandrel bend), Method C (stiffness, non-collapsible, bore ≥ 100 mm).
• Temperature conditioning and control requirements to reach specified sub-ambient test temperatures before bending tests.
• Specifications for test apparatus (mandrels, fixtures, force measurement where required) and detailed test procedures for reproducible measurement.
• Reporting format and required result parameters (e.g., stiffness value, flexibility assessment, test temperature and specimen geometry).
• Guidance on applicability by bore/diameter and on suitability for routine QC versus laboratory evaluation.

Typical use and users

Manufacturers of rubber and plastics hoses and tubing, independent test laboratories, quality assurance engineers, product development teams and purchasers who need to verify cold‑temperature performance or compare materials/constructions use this standard. It is used for type testing, material selection, acceptance testing, and routine quality control when cold flexibility or stiffness is relevant to product performance.

Related standards

ISO 10619 is a multi‑part series. Part 1 (ISO 10619-1) specifies bending tests at ambient temperature and is commonly used together with Part 2 when assessing hose performance across temperature ranges. National/adopted versions (EN ISO 10619-2, etc.) may also be available. Technical committee: ISO/TC 45/SC 1 (Hoses and hose assemblies).

Keywords

rubber hoses, plastic hoses, tubing, flexibility, stiffness, bending test, sub-ambient temperature, cold testing, mandrel bend, quality control, ISO 10619-2, hose testing.

FAQ

Q: What is this standard?

A: ISO 10619-2:2021 is an International Standard that defines bending-test methods for measuring flexibility and stiffness of rubber and plastics hoses and tubing at sub-ambient temperatures.

Q: What does it cover?

A: It covers three test methods (A, B and C) for different bore sizes and applications: two methods for stiffness measurement and one for flexibility assessment when hoses/tubing are bent to specified radii at temperatures below standard laboratory temperature. It specifies apparatus, conditioning, procedures and reporting.

Q: Who typically uses it?

A: Hose and tubing manufacturers, independent testing laboratories, QA/QC and R&D engineers, procurement/specifiers and regulatory bodies evaluating cold-performance or ensuring product conformity.

Q: Is it current or superseded?

A: ISO 10619-2:2021 is the published (current) edition of Part 2, published in June 2021; it replaces earlier editions of the part. A formal periodic review is part of ISO lifecycle practice. Check with ISO or your national standards body for the very latest status or national adoptions.

Q: Is it part of a series?

A: Yes — ISO 10619 is a multi-part standard on measurement of flexibility and stiffness of hoses and tubing. Part 1 covers ambient-temperature bending tests (ISO 10619-1) and Part 2 covers sub-ambient tests; other parts or national/adopted variants exist.

Q: What are the key keywords?

A: flexibility, stiffness, bending test, sub-ambient temperature, hoses, tubing, mandrel, quality control, ISO 10619-2.