ISO 12192:2011 is an International Standard for determining the edgewise compressive strength of paper and paperboard using the ring crush method (often referred to as RCT).
It is commonly used to compare board furnish and production conditions, support packaging material qualification, and monitor strength consistency for converting and shipping-container applications. If you need help determining whether ring crush is the right metric for your product or what fixture configuration is typically used, talk with our team.
ISO 12192:2011 — Paper and board — Determination of compressive strength — Ring crush method
ISO 12192:2011 describes a laboratory method for measuring ring crush resistance, reported as edgewise compressive strength, on paper and paperboard formed into a ring and compressed to failure.
The standard is intended for paper and paperboard within a defined thickness range and is frequently cited for packaging grades used to produce fibreboard shipping containers.
Quick Definition
What it is: A compressive-strength test method for paper and paperboard using a ring-shaped specimen.
What it measures: Edgewise compressive strength (ring crush resistance) under controlled compression loading.
Why it is used: To compare materials and monitor manufacturing consistency for packaging-related performance needs.
What This Standard Covers
ISO 12192 focuses on how to prepare a paper/board strip, form it into a ring using a dedicated holder, and compress the ring to determine the maximum force (and related strength metric) associated with edgewise compression.
The method is designed to be repeatable for quality control and material comparisons, while recognizing that thinner materials can show a mix of buckling and compression behavior.
Why This Standard Matters in Testing
Ring crush testing is a practical way to track how changes in fibre blend, refining, basis weight, calendering, moisture, and other process variables influence edgewise compression performance.
For packaging and converting operations, it can be part of a broader material-qualification or supplier-approval process where consistent strength properties are required across lots and production shifts.
Common Materials, Product Types, or Applications Covered
ISO 12192 is used for paper and paperboard products where edgewise compressive strength is a key control property.
Common applications: Packaging papers and boards used in the manufacture of fibreboard shipping containers and related converting operations.
Common Test or Verification Workflow
Most labs use ISO 12192 as part of routine incoming inspection, production QC, or R&D benchmarking for paper/board grades.
- Condition specimens per the lab’s standard conditioning practice for paper and board testing.
- Cut strips and prepare ring specimens using the specified ring holder approach.
- Apply compressive loading to the ring using a suitable compression test frame.
- Record the peak force and calculate/report the ring crush resistance/edgewise compressive strength per the standard’s reporting requirements.
Equipment Commonly Used for This Standard
ISO 12192 typically points to a controlled compression test setup paired with a ring crush fixture that forms and supports the specimen as a ring during loading.
Common equipment: Compression tester (or universal testing machine configured for compression), ring crush (RCT) fixture/holder set, compression platens, and an appropriate force-measurement range for the expected peak loads.
Common supporting tools: Specimen cutting tools suitable for paper/board strips and thickness measurement tools used for material characterization and setup checks.
If you are comparing frame capacity, fixture style, or automation options for paper/board compression work, you can request a detailed quote for a configuration matched to your sample thickness range and throughput.
How to Read This Designation or Revision
ISO standards are commonly cited using the standard number plus the publication year (for example, ISO 12192:2011). The year matters because fixture details, applicability ranges, and reporting requirements can change between editions.
ISO 12192:2011 (Edition 2) is the current published edition, and the earlier ISO 12192:2002 edition has been withdrawn.
Related Standards, Methods, or Frameworks
Ring crush is often used alongside other paper and paperboard strength and stiffness measurements when building a packaging material property profile. The exact combination depends on product type and the performance questions being answered.
When aligning test programs across suppliers or sites, it is important to keep the cited standard editions consistent and document the conditioning practice used for all compared results.
Get help selecting an ISO 12192 test setup
If you share your material type, thickness range, and whether you need QC throughput or R&D flexibility, we can recommend a practical equipment path (compression frame capacity, ring crush fixture options, and data/reporting needs). Contact our team to discuss your application.