Corrosion Coupon

This tool can greatly help in precise corrosion rate monitoring in any critical environment. It is beneficial in terms of:

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A corrosion coupon is a simple and very effective tool that gives a quantitative estimate of corrosion rates that take place within a specific operating system. These coupons also offer a visual signal of the corrosion type that may be occurring in the system under observation.

Corrosionpedia Explains Corrosion Coupon

Corrosion coupons provide a cost-effective means of monitoring that allows corrosivity measurement in a system in the most accurate manner. This is usually done through the observation of the corrosion rate in mils per year of a coupon exposed in the system. With this, valuable data can be extracted about the life expectancy of materials.

Coupons are pieces of metal that are available in varying shapes, sizes and materials. They are composed of the same chemical composition as the equipment to be monitored. Corrosion coupons are exposed to a corrosive solution similar to that in process facilities for a specified period of time, and can give visual signs of the corrosion rate and type.

Such coupons are usually stenciled with a unique serial number for easy identification.

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The three most common types of coupons are:

• Strip ¾ &#; This is the most widely used coupon for all corrosion evaluations.
• Strip ½ &#; This is widely used with narrow ports or low-pressure equipment.
• Disc &#; This coupon type is applied in multiple or stacked monitoring applications.

With the aid of these erosion and corrosion monitoring coupons, studies are successfully conducted to meet the highest level of standards.

Corrosion Coupons have copper and silver metal strips. These metals represent the sensitive electronic components you rely on when exposed to the air in your environment. Over the course of a 30-day installation period, any corrosive air present will cause build up on the surface of these metal strips. After 30 days, the coupon is sent back to our lab for analysis where our scientists work to determine the air quality classification of the environment. You will receive a detailed report and a results-based solution to help determine next steps.

Additionally, the Corrosion Coupon+ contains a temperature and relative humidity logger for evaluation of controls and limits. Temperature should be maintained consistent with electronic equipment warranty requirements or at the lowest level possible consistent with personal comfort, typically 72°F, 22°C (±2°F, ±1-2°C). Relative Humidity should be less than 50% with close control of deviations, no greater than 6% per hour.

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