ISO 3303:1990 covers determination of bursting strength for rubber- or plastics-coated fabrics. It is commonly referenced when coated textiles must resist localized “push-through” damage that can lead to rupture in service.
This document is withdrawn, but it is still encountered in legacy specifications and drawings. If you need help mapping a customer callout to an appropriate current method or test setup, talk with our team.
ISO 3303:1990 — Rubber- or plastics-coated fabrics — Determination of bursting strength
ISO 3303 describes laboratory procedures used to determine the bursting strength of coated fabrics. The intent is to characterize resistance to rupture under a concentrated, out-of-plane force applied to a clamped specimen.
In practice, results are often used for product qualification, supplier approval, and batch-to-batch comparison of coated textile materials used in demanding mechanical environments.
Quick Definition
What it is: A bursting strength determination for rubber- or plastics-coated fabrics.
What it measures: The force at rupture under a standardized clamping and loading arrangement (burst/puncture-style loading).
Status note: ISO 3303:1990 is withdrawn; many users now reference later split parts (e.g., steel-ball and diaphragm methods) instead of this legacy document.
What This Standard Covers
ISO 3303:1990 lays down two approaches for determining bursting strength of rubber- or plastics-coated fabrics:
- A method using a tensile testing machine with a ring clamp and a steel ball.
- A method using a diaphragm bursting tester operated by hydraulic pressure.
Because the standard is withdrawn and many procurement documents cite it inconsistently, always confirm the exact method expectations (steel-ball vs. diaphragm) with the governing customer or product specification.
Why This Standard Matters in Testing
Bursting strength is a practical durability indicator for coated fabrics where point loading, snagging, or localized deformation can initiate a rupture. It is especially useful when a simple uniaxial tensile value does not represent how the material fails in real use.
For QA/QC teams, the test is often used to compare incoming rolls or lots against an internal baseline and to document conformance when a purchase contract calls out bursting strength.
Common Materials, Product Types, or Applications Covered
ISO 3303 applies to textiles with rubber or plastic coatings and laminations where the coated structure is expected to carry mechanical loads without puncture-like rupture.
Common examples: Coated industrial fabrics used in flexible connectors, protective covers, curtains, bellows, inflatable or flexible containment components, and other coated textile products where localized loading can occur.
Common Test or Verification Workflow
A typical ISO 3303 workflow is centered on sampling a coated fabric, conditioning (as required by the governing specification), clamping a test piece, applying load via the selected bursting approach, and recording the force at rupture.
Common workflow use cases: Incoming inspection, supplier comparisons, product qualification testing, and investigation of field failures involving puncture/burst-type rupture.
Equipment Commonly Used for This Standard
Equipment selection depends on which of the two approaches is required by the controlling document set.
Steel-ball method path: A universal testing machine (or comparable force frame) paired with a bursting attachment that includes a ring clamp and a polished steel ball to load the specimen until rupture.
Diaphragm method path: A diaphragm bursting tester that applies hydraulic pressure to a membrane/diaphragm system until the specimen ruptures.
When quoting equipment, the most important practical details are the clamping geometry, force capacity, method control/drive requirements, and how results are recorded (force at rupture and any additional required outputs).
How to Read This Designation or Revision
Designation: ISO 3303:1990 refers to the 1990 edition (Edition 2) of ISO 3303.
Revision sensitivity: ISO 3303:1990 is withdrawn, and many organizations now cite later split standards for bursting strength of coated fabrics. If your drawing or customer spec says “ISO 3303” without a year or method, the required setup (steel-ball vs. diaphragm) may be ambiguous.
Related Standards, Methods, or Frameworks
ISO has issued later documents that separate bursting strength approaches into method-specific parts (commonly cited as steel-ball and diaphragm bursting methods). If your requirement is performance-based but method-unclear, aligning on the exact referenced part is usually the fastest way to avoid mismatched results.
Get help selecting a bursting strength setup
If you are matching a legacy ISO 3303 callout to a steel-ball fixture, ring clamp, or a diaphragm bursting tester configuration, you can request a detailed quote for an equipment package aligned to your lab workflow and reporting needs.