This standard is issued under the fixed designation C; the number 1 This test method is under the jurisdiction of ASTM Committee B08 on Metallic. ASTM C determines the bonding strength of thermal spray coatings. ASTM Standard C, “Standard Test Method for Adhesion or Cohesive Strength of Flame-Sprayed Coatings,” is widely used in industry and research for .

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ASTM C – DFD® Instruments

The ASTM C test method is used to determine the adhesion or cohesion strength of a thermal spray by subjecting it to tension perpendicular to the surface. The substrate fixture that spray coating is applied to is most commonly a cylinder made of the same metal that would be used as the substrate of the coating in its actual use.

A similar, but uncoated, fixture is then glued to the surface of the coating with a suitable adhesive bonding agent. The adhesive bonding agent should not be the “weakest link”, but should be at least as strong as the minimum required adhesion or cohesion strength of the coating.


ASTM C633 Adhesion or Cohesion Strength of Thermal Spray Coatings

To ensure the direction of force application is perpendicular to the coated surfaces, ASTM C specifies to use a self-aligning load fixture to attach these substrate cylinders to the test frame.

The assembly is pulled at a constant speed between 0. The maximum force is then normalized over the cross-sectional area to give adhesion or cohesion strength of the thermal spray.

If failure is entirely at the coating-substrate interface, then the result is referred to as the adhesion strength. If failure asstm within the coating, the result is referred to as the cohesion strength. It is important to review ASTM C in order to fully understand the test setup, procedure, and results requirements.

They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. Sistemas Universais de Ensaios.


Sistemas para Ensaios Automatizados. Bluehill LE for Basic Testing. Concreto, asfalto e rocha.


ASTM C Adhesion or Cohesion Strength of Thermal Spray Coatings – Instron

Fadiga de de alto ciclo. Descolamento, rasgo e atrito. Inscreva-se para os folhetos informativos. The challenges of testing to this standard are: Data rate used to capture the maximum peak Fixtures in accordance with the standard Instron Solution: In addition to this, we find it extremely useful to incorporate an axial slack coupling into the design of the loading fixture as it greatly improves setup time.

Different size blocks can be made to test the full dimensional range of specimens allowable by the standard.