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Ensuring Coating Durability

  • Writer: Rohit Bafna
    Rohit Bafna
  • Aug 6
  • 2 min read

At TCR Engineering's material testing laboratory in India, we are committed to delivering excellence in materials testing and validation. Our suite of surface durability and adhesion tests ensures that protective coatings and finishes perform reliably under real-world conditions.


Ensuring Coating Durability – TCR Engineering’s Surface Testing Capabilities
Ensuring Coating Durability – TCR Engineering’s Surface Testing Capabilities

Here are four key surface evaluation tests we conduct in accordance with international standards:


1. Salt Spray Test – 120 Hours (ISO 9227 / ASTM B117)

This accelerated corrosion test evaluates the resistance of coatings to a highly saline environment over 120 hours. It simulates long-term environmental exposure and is critical for assessing the lifespan of protective finishes on metals.


2. Peel Test (Adhesive Method) – ISO 2819

This test measures how well a coating adheres to its substrate. By using a standardized adhesive method, we can evaluate the bond strength and identify potential points of failure under stress or environmental change.


3. Scribe and Grid Test – ISO 2819

This test assesses the adhesion of coatings after they are intentionally scratched or scribed. A grid pattern is cut into the coating, followed by tape removal to observe any detachment. It’s a quick and effective method to evaluate coating resilience.


4. Bending Test – ISO 2819

Used to evaluate flexibility and adhesion, the bending test involves deforming the coated metal substrate to check for cracking, flaking, or peeling. It’s essential for applications where coated components may be subject to bending or shaping in use.


These tests are indispensable for validating the integrity of surface coatings across industries such as automotive, aerospace, construction, and electronics. With precise execution and adherence to global standards, TCR Engineering ensures your materials stand up to the elements and time.

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