ISO 1827 is an ISO rubber testing standard for determining shear modulus and/or the bond strength (adhesion) of rubber to rigid plates using a quadruple-shear test piece configuration.
If you need help matching ISO 1827 to your sample geometry, bonding approach, or machine/fixture capability, talk with our team about your application before finalizing a test setup.
ISO 1827 — Rubber, vulcanized or thermoplastic — Determination of shear modulus and adhesion to rigid plates — Quadruple-shear methods
ISO 1827 specifies quadruple-shear methods that use rubber bonded between four parallel rigid plates to generate shear loading in the rubber layer.
The standard includes an approach for determining shear modulus (Method A) and an approach for determining bond strength to rigid plates (Method B), depending on the objective of the test program.
Quick Definition
Document type: Test method (International Standard).
What it measures: Shear modulus of vulcanized or thermoplastic rubber and/or the strength of rubber-to-rigid-plate bonds in a quadruple-shear configuration.
Typical use: Compound development, process control, and evaluation of bonded shear units where shear stiffness and bond performance are critical.
What This Standard Covers
ISO 1827 is centered on a bonded assembly test piece: rubber is bonded between rigid plates and loaded so the rubber experiences shear.
It is used to generate comparable, repeatable data for rubber shear stiffness (modulus in shear) and for the integrity/strength of the rubber-to-substrate bond under the defined loading arrangement.
Why This Standard Matters in Testing
Shear stiffness is a key performance attribute for many elastomer components used for isolation, mounting, and compliance control. ISO 1827 provides a standardized way to compare shear behavior across compounds, suppliers, and manufacturing conditions.
When the objective is a bonded product (rubber-to-metal or rubber-to-rigid-substrate), the adhesion portion of ISO 1827 helps teams evaluate whether bonding systems and manufacturing controls are delivering consistent bond strength for the intended design.
Common Materials, Product Types, or Applications Covered
This standard is primarily applied to vulcanized rubber and thermoplastic rubber materials evaluated in a bonded shear configuration.
Common examples: Rubber compounds under development, rubber-to-metal (or rubber-to-rigid-substrate) bonded assemblies, and bonded shear units where shear modulus and bond strength are used as engineering or quality metrics.
Common Test or Verification Workflow
ISO 1827 is typically used in R&D and QA/QC programs where a lab-prepared bonded test piece is evaluated to quantify either shear modulus (Method A) or bond strength (Method B).
Common workflow pattern: define whether the goal is stiffness (shear modulus) or bonding performance (bond strength), prepare bonded test pieces representative of the intended materials/process, run the method using a suitable shear fixture and force/displacement measurement, and report results for comparison and control.
Equipment Commonly Used for This Standard
ISO 1827 is fixture-driven: the key requirement is the ability to apply controlled shear loading to a rubber layer bonded between rigid plates, while accurately measuring force and the relevant displacement/strain response.
Common equipment families: Universal testing machines (electromechanical) or servo-hydraulic test frames with an appropriate quadruple-shear fixture, a properly sized load cell, and displacement measurement suitable for shear stiffness and/or bond strength evaluation.
If you are selecting a frame capacity, fixture size, or data/controls package for ISO 1827 work, you can request a detailed quote for a configuration matched to your specimen size and expected force range.
How to Read This Designation or Revision
ISO standards are commonly cited as “ISO 1827” (standard number) and, when needed, “ISO 1827:YYYY” to identify the publication year of the edition being used.
ISO 1827:2022 is a published edition, and ISO notes that ISO 1827:2016 is withdrawn. For purchasing, quoting, or internal compliance documentation, it is a good practice to cite the full designation including the year so the intended edition is unambiguous.
Related Standards, Methods, or Frameworks
ISO 1827 is specific to a quadruple-shear configuration for shear modulus and/or adhesion to rigid plates. In many rubber testing programs, it is managed alongside other elastomer physical-property methods (e.g., tensile, hardness, tear, aging, or additional adhesion approaches) depending on product requirements.
When you are building a multi-test plan, edition alignment matters—ensure every cited method matches the intended material type, specimen configuration, and acceptance criteria used by your customer or internal specification.
Get help specifying an ISO 1827 test setup
For help selecting a quadruple-shear fixture, right-sizing force capacity, or planning a repeatable rubber-to-rigid-plate test workflow, contact our team with your material type, bonded plate geometry, and target outputs (shear modulus vs. bond strength).