Mett-Bio Metallurgical Testing and Analysis is an independent R&D division with ISO 17025:2017 (NABL) accreditation, located in Ahmedabad, India. is involved in corrosion testing and failure analysis since 2013.

We are glad to announce Corrosion Test Coupons, an inexpensive online monitoring tool that will allow you to properly monitor corrosion within your systems. The mile per year corrosion rate of an exposed coupon can be used to easily determine the materials life.

Mett-Bio can help you manufacture coupons in any shape, size, and material (ferrous, non-ferrous, and elastomeric). Depending on the requirements, a suitable marking can also be stencilled on the coupons. Typical coupon shapes include flat strip coupons, disc coupons, and cylinder coupons. Mett-Bio provides a variety of coupon holders and can also develop and manufacture custom holders to meet specific requirements..

Superior Chemical Resistance and Durability

Coated with Halar (ECTFE), these corrosion coupons provide outstanding resistance against harsh chemicals and corrosive substances, making them suitable for challenging service conditions. The coating maintains integrity across a wide temperature range and resists UV and mechanical wear, ensuring a long service life and dependable performance.

Customizable for Your Application

Whether you require a specific base material, shape, or corrosion allowance, these coupons can be tailored to your monitoring plan. Standard sizes are available, but custom dimensions and shapes (including flat strips, rods, and discs) ensure compatibility with diverse systems and mounting requirements. Each unit is precision manufactured to meet your needs.

Accurate, Reliable Corrosion Monitoring

Designed for manual operation, each coupon enables precise weight loss measurement to evaluate corrosion rates. With a sensitivity of 0.01 mg (dependent on weighing scale), the process provides reliable data for corrosion control programs, helping facilities minimize risk and extend equipment lifespan.

FAQ's of Halar Coated Corrosion Coupon:

Q: How is the Halar coating applied to the corrosion coupon?

A: The Halar (ECTFE) coating is applied through a specialized process, ensuring a uniform layer between 250 and 600 microns in thickness. This creates a smooth and consistent surface that adheres strongly to the underlying base material, providing reliable protection in chemically aggressive environments.

Q: What base materials can be used for these corrosion coupons?

A: You may specify mild steel, stainless steel, or other materials as required for the coupon base. The choice of base metal allows compatibility with the intended monitoring environment and aligns with your facility's corrosion study objectives.

Q: When should I use a Halar Coated Corrosion Coupon?

A: These coupons are ideal for corrosion rate evaluation in aggressive chemical environments where resistance to strong acids, solvents, or high temperatures is crucial. They are commonly used during periodic checks as part of a corrosion monitoring program in industrial plants.

Q: Where are these corrosion coupons typically installed?

A: Installation sites include pipelines, chemical reactors, storage tanks, and any location exposed to corrosive substances. The mounting type can be threaded or fixed, allowing flexibility based on the equipment or system design.

Q: What is the recommended process for using the coupon?

A: To use, install the coupon per your monitoring plan and retrieve it at scheduled intervals. After exposure, clean the specimen to remove any corrosion products and measure the weight loss with a precision balance (0.01 mg resolution) to evaluate corrosion rates.

Q: What are the main benefits of using a Halar (ECTFE) coated coupon?

A: The key advantages include superior chemical and UV resistance, stability at temperatures from -40C to 150C, and a durable, long-lasting coating. These features help ensure accurate corrosion rate measurement and extend the service life of the coupons.

Q: How long can I store the coupons before use?

A: Coupons have a shelf life of over five years when stored properly in ambient conditions, thanks to the robust Halar coating and careful individual packaging that protects them from environmental exposure.