Resources
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Industry Standards
ISO 2178:2016: Magnetic Measurement of Non-Magnetic Coatings on Magnetic Substrates
ISO 2178:2016 specifies the magnetic method for measuring the thickness of non-magnetic coatings (paint, galvanizing, powder, enamel, etc.) on magnetic substrates (steel, iron); the…
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Industry Standards
The 80/20 Rule Explained: Coating Thickness Acceptance with a Worked Example
The 80/20 rule is the shared acceptance method of SSPC-PA 2 and ISO 19840: the area mean ≥ nominal thickness, fewer than 20% of…
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Industry Standards
SSPC-PA 2-2022 Explained: Spot Count, Acceptance Rules and 11 Annexes
SSPC-PA 2-2022 is the US painting acceptance procedure. It specifies the number of spots by coated area, the reading requirement per spot, and pass/fail…
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Industry Standards
ASTM D7091-22 Explained: Operating Procedure for Magnetic and Eddy-Current Coating Thickness Gauges
ASTM D7091-22 is a Standard Practice that specifies calibration, verification, adjustment and measurement for magnetic and eddy-current coating thickness gauges. It supplements rather than…
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Industry Applications
Coating on Concrete, Wood and Plastic: Field Solutions for Non-Metallic Substrates
Floor coatings, wood finishes and plastic-part painting share one trait: the substrate is neither magnetic nor conductive, so magnetic and eddy current methods both…
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Industry Applications
Hull and Yacht Thickness Survey: The Typical Case for Echo-Echo No-Grind Measurement
Hull, yacht and offshore structure thickness surveys share one problem: the surface already has a full anti-corrosion coating, and grinding means repair. Echo-Echo through-coating…
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Industry Applications
Pipe, Boiler and Pressure Vessel Wall Thickness: The Routine Step in Corrosion Monitoring
Wall thickness of pipes, boilers and pressure vessels is measured by ultrasonic pulse-echo: from outside the equipment, the round-trip sound time is converted to…
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Industry Applications
Intumescent Fireproofing Coating Thickness Verification: Why You Need a Wide-Range Gauge
Intumescent fireproofing on steel structures runs from several hundred micrometres to several millimetres, far beyond ordinary painting, so a wide-range magnetic gauge is the…
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Industry Applications
Anodized Aluminum Oxide Layer Thickness: The Standard Eddy Current Application of ISO 2360
The anodic oxide layer is an insulating oxide grown in place on the aluminium surface, with a clean interface and no primer interference —…
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Industry Applications
PCB Conformal Coating Thickness: Why Eddy Current Is the Only Option
The conformal coating on a printed circuit board sits over copper traces and glass-fibre substrate; copper is a non-magnetic conductive metal and the coating…
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Industry Applications
Hot-Dip Galvanizing Coating Weight: The Logic From μm to g/m2
The hot-dip galvanizing industry expresses coating mass as "weight g/m2", while a gauge gives a length unit; the two convert by zinc density (about…
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Industry Applications
US Window Tint VLT: 50-State Law Differences and the Net VLT Trap
The US has no federal tint standard; front-side-window visible light transmittance (VLT) is set by each state, most commonly 35%, strictest 70%; because factory…