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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They were big machines with a measurably moving traverse to measure elongation. The substrate fixture that spray sstm 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. This site uses functional cookies and external scripts to improve your experience.

ASTM C633 Thermal Spray Adhesion Testing

A 25mm diameter steel cylinder end is sprayed with the required atm. Thermal spray coating materials include ceramics and metals. Data rate used to capture the maximum peak Fixtures in accordance with the standard Instron Solution: Different size blocks can be made to test the full dimensional range of specimens allowable by satm standard.

ASTM C ASTM C is a test method used in quality control, acceptance testing, developing thermal spray coatings and comparing adhesion or cohesion of adhesion thermal spray coating materials.

In some cases, a coating is formed of different spray materials, such as an oxide layer sprayed onto a sprayed metal-bonding layer.

How bad is it? 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. Email addresses can only contain letters, numbers and the following special characters: The substrate generally is a metal, but may be a ceramic, such as an oxide or graphite.

Work with us to find the right equipment for your ASTM standard. Because of residual stresses in thermal spray coatings, actual strength depends upon the shape of the particular coated part. Subscribe to Instron News! The strain in a thin coating cannot be sensibly measured so tensile rate in millimeters per minute is not relevant.


The purpose of this standard is to aid aastm testing bond strength of thermal spray coatings.

ASTM C Thermal Spray Coatings Adhesion Test Equipment and Solutions

Another cylinder with the same diameter is glued on top of this. So instead of controlling the distance the the dolly is traveling during pull testing the machine should be able to control the materials pull stress increase measured in MPa or psi per second.

An electromechanical universal test machine can be used to measure ashm strength of a coating. 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.

Link to Active This link will always route to the current Active version of the standard. Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. To spray-coat a cylinder end is not necessarily a good representation of spraying another surface; If a coating adhesion on a particular substrate is to be investigated special test cylinders of the same material need to be made; The test procedure is slow and cumbersome; Not everybody has access to a tensile testing machine, 6c33 they can be very expensive to purchase The Solution The PAT adhesion tester has addressed all these problems.

With PAT there is a choice. By means of our testing expertise and modular product design, we will help find the testing solution that is right for you. The entire ASTM C specification should be reviewed prior to performing the sstm to ensure correct substrate surface preparation, application of coatings and test speeds.

This is determined with a peel test. With The ASTM standard the rate of stress increase in the coating will depend on the thickness of the coating, which is another weakness of this standard: The maximum force is then normalized over the cross-sectional area to give adhesion or cohesion strength of the thermal spray.

The substrate with coating is then glued to another cylinder of equal diameter. The challenges of testing to this standard are: It is adapted particularly for testing coatings applied aetm thermal spray, which is defined to include the combustion flame, plasma arc, two-wire arc, high-velocity oxygen fuel, v633 detonation processes for spraying feedstock, which may be in the form of, wire, rod, or powder. The substrate is generally a metal but may be a ceramic.


You may change your settings at any time. After positioning this assembly into the tensile testing machine they were pulled apart. If failure occurs within the coating, the result is referred to as the cohesion strength. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications.

Description Literature Contact Us The ASTM C astk method is used to determine the adhesion or cohesion strength of a thermal spray by subjecting it to tension perpendicular to the surface.

The ASTM C testing standard was written to allow for coating adhesion in a tensile testing machine.

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

C363 Documents purchase separately The documents listed below are referenced within the subject standard but are not c63 as part of the standard. Cohesion strength of thermal spray is a measurement of tensile strength of the adhesive coating.

Also, in use, a coating may be stressed in a more complex manner than is practical for a standard test. Force range of 5 kN to kN 1, lbf tolbf Adjustable test space The most popular choice for static tension and compression tests Atsm dual column testers are available in both tabletop and floor standing models.

It is important to review ASTM C in order to fully understand the test setup, procedure, and results requirements. By continuing to use our site, you accept our cookie policy. 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.

Higher temperature testing is restricted by the need for a suitable adhesive bonding agent. Thermal c363 coating materials include ceramics, such as metal oxides or carbides, and metals.

Have a question about conducting the test for this standard?