Technical Articles
Technical content published for the HDG community — written for practitioners, by practitioners.
Corrosion Protection for Steel: Every Method Compared to Hot-Dip Galvanizing
Paint, zinc-rich paint, electroplating, mechanical plating, sherardizing, thermal spray metallizing, hot-dip aluminizing, duplex, weathering steel, stainless and cathodic protection — mechanism, standard, service life and cost, and when each one beats HDG instead of losing to it.
Read the article → Bath ChemistryThe Kleingarn Curve in HDG Pickling Bath Management
In an HCl pickling bath, pickling speed is set by the balance between free acid and dissolved iron — not by acid alone. How the Kleingarn relationship lets you read it and plan bath life.
Read the article → StandardsASTM A123 & ISO 1461 — New Editions: What Changed
Both standards were revised — ASTM in 2024, ISO in 2022. Renovation rules tightened, ultra-low-reactivity steels finally got a rule, and material categories became the thing that actually moves your zinc. Corrected 2026-08-15: the coating grade for structural shapes did not change.
Read the article → Plant OperationsZinc Consumption KPIs: How to Measure Plant Efficiency
Revision 2.0, revised after technical review. Industry figures as a ceiling, an expert's field range as the aim point, and 30,510 tonnes of my own 2025 production as a case study — with the ash number that does not flatter me.
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