Information on the most widely used ASTM standards within the materials testing industry
ISO 11339
ISO 11339 180 degree T peel test grip used to measure the adhesion strength of sealing material, this test is particularly important in assessing the performance of adhesive bonds in various products and materials.
General introduction
ISO 11339 180 degree T peel test grip used to measure the adhesion strength of sealing material, this test is particularly important in assessing the performance of adhesive bonds in various products and materials.
What is Peel Testing?
Peel testing, also known as adhesion testing, is a method used in materials science and engineering to measure the bond strength between two materials. This test is particularly important in assessing the performance of adhesive bonds in various products and materials.
The process involves applying a force to separate two bonded surfaces. This is typically done using a machine that applies a controlled force to peel away the adhesive or bonded material. The force exerted and the rate at which the material is peeled off provide critical data about the adhesive strength and quality of the material.
There are different types of peel tests, including the 90-degree, 180-degree, and T-peel tests.
The choice of test depends on the materials involved and the specific information required. For example, the 90-degree peel test is often used for rigid adherends and involves peeling the adhesive material at a right angle. The 180-degree peel test is typically used for flexible adherends and involves peeling the material back onto itself.
The results of a peel test can provide valuable insights into the performance of a material under stress, helping engineers and material scientists make informed decisions about material selection and product design. It is a crucial tool in industries such as packaging, electronics, automotive, and biomedical, where the integrity of adhesive bonds is critical for product performance and safety.
Types of Peel Testing
Peel testing is a critical method used to measure the adhesive strength between two materials. There are several types of peel tests, each designed to assess different aspects of a material’s adhesive properties. Here are the three primary types of peel tests:
T-Peel Test: This test is designed to measure the force required to separate two flexible materials that have been bonded together. The assembly is pulled apart in a ‘T’ configuration, thus the name. This type of test is commonly used to evaluate flexible-to-flexible adhesive bonds, such as those found.

Specification
Clip dimensions: 80x40MM
Holding thickness: 30MM
Connecting thread: internal M12
Overall dimensions: 170x160x80MM
Net weight: 5KG
Standard
ASTM F2824 Standard Test Method for Mechanical Seal Strength Testing for Round Cups and Bowl Containers with Flexible Peelable Lids
ASTM F2824 defines how to measure the mechanical force needed to peel the entire flexible lid/cover/membrane off a rigid or semi‑rigid round cup or bowl. It records continuous force vs. displacement so you can evaluate average strength, peak/maximum strength, and work (energy) across the whole seal perimeter—not just a strip.
ISO 11339 Adhesives — T-peel test for flexible-to-flexible bonded assemblies.
It specifies a T‑peel test for the determination of the peel resistance of an adhesive by measuring the peeling force of a T‑shaped bonded assembly of two flexible adherends. The ISO 11339 test method is suitable for self-adhesive tapes that are prepared under the relevant guidelines within this test standard. For a T-peel test for a flexible-to-flexible assembly, the force is applied to the unbonded ends of the specimen . The angle between the bond line and the direction of the applied force is not fixed.
ASTM D903 — Standard Test Method for Peel or Stripping Strength of Adhesive Bonds
ASTM D903 evaluates 180° peel strength of structural adhesive bonds formed by permanent liquid adhesives, not pressure-sensitive (PSA) tapes. quantifies comparative stripping force required to separate a flexible substrate from a bonded rigid/flexible counter substrate, under standardized bonding, conditioning, and tensile test conditions.
Key concept: D903 measures the average load per unit width of bond line required to progressively separate one member from another at approximately 180° and at a separation rate of 152 mm (6 in.)/min. Results are expressed in kg/mm (lb/in) of width.
ISO 36 defines the standardized 180° peel adhesion test to quantify bonding strength between vulcanized/thermoplastic rubber and textile fabrics via stripping separation force measurement. Tells you how strongly the rubber is glued/chemically bonded to the fabric.
ASTM D3330 Standard Test Method for Peel Adhesion of Pressure-Sensitive Tape
ASTM D3330 for measuring peel adhesion of all types of pressure-sensitive adhesive (PSA) tapes, unifies six distinct test geometries to characterize interfacial bonding strength between PSA tape and substrates, tape backings, release liners, and transfer adhesive films, covering both 180° and 90° peel angles.
ISO 8510-2: Adhesives — Peel test for a flexible-bonded-to-rigid test specimen assembly Part 2: 180° peel.
ISO 8510-2 specifies a 180° peel test for determining the peel resistance of a bonded assembly where one adherend is flexible and the other is rigid. Measures the peel resistance of structural liquid adhesive bonds where one adherend is flexible and the other rigid. It only applies to cured structural adhesives (epoxy, PU, wood glue, contact adhesives) – not pressure-sensitive adhesive tapes. It provides repeatable comparative peel force data for R&D, factory quality control, supplier qualification and commercial dispute resolution.
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