HP

HovoyPetro

Corrosion monitoring, chemical injection & well completion

Corrosion Monitoring

Corrosion Coupons

Precision metal samples for quantitative corrosion rate measurement in pipelines, vessels, and process systems.

Overview

Corrosion coupons are small, pre-weighed metal specimens inserted into a process stream to measure corrosion rate over time. After a defined exposure period, coupons are retrieved, cleaned per ASTM G1, and re-weighed to calculate metal loss — providing a direct, quantitative measure of corrosion severity. HovoyPetro manufactures corrosion coupons in all standard types and materials, with full ASTM G1 compliance and mill test reports.

Key Features

  • Full range: weight loss, strip, disc (flush), cylindrical, and erosion coupons
  • Materials: carbon steel, SS304, SS316L, duplex 2205, Hastelloy C276, Alloy 20, Monel 400, and custom alloys
  • Surface finish options: 120-grit standard, up to 600-grit for precision applications
  • Identification: stamped serial numbers for traceability
  • Supplied with mill test report (MTC) per EN 10204 3.1
  • Custom dimensions, hole patterns, and special geometries available

Technical Specifications

Coupon TypesWeight loss (flat/strip), disc (flush), cylindrical, erosion, biofilm
Standard DimensionsStrip: 75×12×1.5 mm / 3"×0.5"×0.06". Disc: 25 mm dia. Custom on request.
Surface Finish120-grit (standard), 240, 320, 600-grit
Temperature RangeUp to 300 °C (depending on material)
IdentificationStamped serial number or laser engraved
PackagingVCI anti-corrosion paper, individually wrapped

Available Materials

Carbon Steel (A36 / 1018 / 1020)
Stainless Steel 304 / 316 / 316L
Duplex 2205
Hastelloy C276
Alloy 20
Monel 400
Inconel 625
Custom alloys on request

Applicable Standards

  • ASTM G1 — Preparing, Cleaning, and Evaluating Corrosion Test Specimens
  • ASTM G4 — Applying Statistics to Analysis of Corrosion Data
  • NACE SP0775 — Preparation, Installation, Analysis, and Interpretation of Corrosion Coupons
  • NACE TM0169 / ASTM G31 — Laboratory Immersion Corrosion Testing

Applications

  • Oil and gas production pipelines
  • Water injection and disposal systems
  • Refinery process units
  • Water treatment and desalination plants
  • Chemical processing plants
  • Power generation cooling water circuits

Related Products

Access Fittings

Pressure-rated fittings that allow safe installation and retrieval of corrosion coupons and probes without shutting down the process.

Coupon Holders & Racks

Holders and racks that securely position corrosion coupons in the process flow for accurate, repeatable corrosion measurement.

Retrieval Tools

Purpose-built tools for safe insertion and retrieval of coupon holders and probes through access fittings without process shutdown.

Need more information about this product?

Contact our technical team to discuss specifications, materials, or custom requirements.

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