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Flathead 10, 10 cm2 Steel Coupon by Farwest Corrosion

Cathodic protection coupons are a simple, size-specific piece of metal with one or more wires attached and are used for evaluating corrosion control or cathodic protection systems protecting a structure, typically a steel pipeline.  These measurments includes: Native or unprotected structure-to-soil potentials Structure-to-soil potentials with the CP system energized Structure-to-soil potentials with the CP system interrupted To emulate an “Off” structure-to-soil potential without interrupting CP current, typically referred to as a “Coupon Interrupt” reading. For magnitude measurements of AC current density on a structure with known induced AC issues. Use as an isolated coupon to evaluate native or unprotected potentials. Flathead-10 Coupon The "Flathead-10" steel coupon is a 10 cm2 coupon made from 1018 alloy steel.  The steel coupon is flush mounted inside a durable PVC housing. 

Created by: Pipeline Corrosion Control

Last updated 11/2025

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Description

Cathodic protection coupons are a simple, size-specific piece of metal with one or more wires attached and are used for evaluating corrosion control or cathodic protection systems protecting a structure, typically a steel pipeline.  These measurments includes: Native or unprotected structure-to-soil potentials Structure-to-soil potentials with the CP system energized Structure-to-soil potentials with the CP system interrupted To emulate an “Off” structure-to-soil potential without interrupting CP current, typically referred to as a “Coupon Interrupt” reading. For magnitude measurements of AC current density on a structure with known induced AC issues. Use as an isolated coupon to evaluate native or unprotected potentials. Flathead-10 Coupon The "Flathead-10" steel coupon is a 10 cm2 coupon made from 1018 alloy steel.  The steel coupon is flush mounted inside a durable PVC housing. 
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