Q-Lab’s CX series of standard corrosion test coupons are consistent, clean, convenient, and cost-effective. They are specifically designed to meet the stringent standards specified in modern corrosion test methods, such as GMW 14872, GM 9540P, SAE J2334, SAE J2721, ASTM B117, ISO 9227, and VDA-233-102.

What are corrosion coupons?

Corrosion coupons (also known as mass-loss coupons) are standardized steel panels that serve as reference specimens in corrosion testing. They help a user verify the rate of corrosion in corrosion chambers and serve as independent test monitoring devices.

Q-PANEL corrosion test coupons

For over 60 years, Q-PANEL test substrates have been recognized as the world standard for a consistent and uniform test surface for paints, plating, adhesives, sealants, rust inhibitors, and other coatings. This consistency and uniformity is now available through Q-Lab’s CX-series corrosion test coupons.

Q-PANEL corrosion test coupons ensure repeatability and reproducibility when performing laboratory corrosion testing. With the corrosion coupons you can independently monitor the test conditions in the chamber, by measuring the mass loss of the coupons as the test progresses.

All Q-PANEL CX series corrosion coupons include a Certificate of Analysis and come pre-cleaned and ready to use right out of the package. This allows the user to simply measure the panels and place them in the tester, saving time and effort. And best of all, CX corrosion coupons are often half the price of competitors’ coupons.

Q-Lab CX corrosion coupon features

  • Consistent – Surface inconsistencies, such as variations in steel roller condition, carbon dust impurity, rust caused by handling errors, and long storage times can affect the consistency of corrosion mass-loss. As a result, ordinary steel is unsuitable for many corrosion tests. Q-Lab’s CX series steel corrosion coupons minimize metal variability as a source of bias in critical corrosion tests, due to three key factors:
    – Volume metal purchasing from select mills
    – Automated production on a high-speed line
    – Rigorous inspection at several processing stages.
  • Clean – The Q-Lab CX corrosion coupon production process thoroughly cleans panels and removes any oil from the surface. Special handling assures all panels are completely clean when packaged. Corrosion coupons are packed in plastic bags with vapor phase rust inhibitor, preserving the high degree of surface quality for a long shelf life.
  • Convenient – For your safety and ease of handling, all Q-PANEL corrosion coupons have deburred edges, and some versions have rounded edges (depending on the requirements of the appropriate standard). Corrosion coupons are supplied pre-cleaned – in fact, Q-Lab’s cleaning and packaging quality allow you to use CX corrosion coupons right out of the package, without compromising test consistency. Furthermore, CX corrosion coupons are tailored to meet the requirements of major national, international, and manufacturer corrosion test standards without any modification.
  • Cost-effective – Because of high-volume production and Q-Lab’s decades-long history as the leader in standardized test substrates, CX corrosion coupons cost much less than you might expect – often half the price of competitors. Purchasing pre-cleaned corrosion coupons reduces the time lab personnel must spend cleaning and handling panels, saving further costs.

More information

Product brochure: Q-PANEL – The World's Standard Test Substrate


Watch Q-Lab's video about Q-PANEL


Manufacturer: Q-Lab