"# ZM Kaplama Teknolojisi\n\n> ZM (Zn-Al-Mg) coated steel for solar and construction \u2014 terminology, standards, corrosion, labs, comparison with HDG, documents and FAQ.\n\n_Canonical: https:\/\/isotec.com.tr\/eng\/zm-kaplama-teknolojisi\/_\n\n---\n\n## Getting Started\n\n### Overview\n\nZM (Zn-Al-Mg) coated steel technology; Magnelis\u00ae, PosMAC\u00ae, Shougang and HBIS producers; EN 10346 and ISO 8353:2024 standards.\n\n### Why ZM?\n\n50 \u00b5m single-side coating, >50 years C2 durability, 10\u00d7 edge protection, EN 10346 standard.\n\n## Terminology\n\n### ZM\n\nGeneral Zn-Al-Mg coating family per EN 10346. Al+Mg total 1.5\u20138%, Mg \u2265 0.2%.\n\n### Magnelis\u00ae\n\nArcelorMittal trademark. Zn-3.5%Al-3%Mg bath chemistry.\n\n### PosMAC\u00ae 3.0\n\nPOSCO trademark. Zn-3%Mg-2.5%Al bath chemistry. ISOTEC 3.1 certified supply.\n\n### Shougang\n\nShougang Group (China) Zn-Al-Mg line. Zn-3%Al-3%Mg. ISOTEC batch-verified supply.\n\n### HBIS\n\nHBIS Group (China \u2014 Hansteel \/ Laoting lines) Zn-Al-Mg line. Zn-3%Al-3%Mg. ISOTEC batch-verified supply.\n\n### HDG\n\nHot-Dip Galvanizing. Post-production immersion \u2014 different process and durability profile vs. ZM.\n\n## Corrosion Resistance\n\n### C1\u2013C5 classes\n\nDesign life tables for ZM310\/ZM430 across ISO 9223 atmospheric corrosion classes.\n\n## Standards & Tests\n\n### EN 10346\n\nProduct standard for continuously hot-dip coated steel. ZM310\/ZM430 classes.\n\n### ISO 8353:2024\n\nNew international product standard for ZM-coated steel (2024).\n\n### Test Methods\n\nXRF thickness (ISO 3497), OES chemistry (ASTM E415), ISO 9227 salt spray, EN 10346 Annex A.\n\n## Testing Labs\n\n### Lab Search\n\nZM testing lab search \u2014 filter by country and method.\n\n## Is It Genuine?\n\n### Checklist\n\nAl\/Mg ratio, 3.1 certificate, coating thickness \u2014 how to spot counterfeit ZM products.\n\n## HDG vs ZM\n\n### Comparison\n\nCut-edge behavior, design life, cost, and project-based selection criteria.\n\n### Material Savings\n\nZM430 with 3 mm steel vs HDG with 4 mm steel \u2014 25% weight, 28% zinc savings.\n\n## Copy Spec\n\n### Copy Text\n\nReady-made spec text by C2\u2013C5 class \u2014 one click copy, paste into tender.\n\n## Documents\n\n### Technical Library\n\nCustomer brochure, 5 technical reports and GES specification \u2014 download in TR\/EN\/DE.\n\n## FAQ\n\n### 10 Key Questions\n\nWhat is ZM, Magnelis\/PosMAC difference, ZM310\/ZM430, HDG comparison, warranty, GES field practice, ISOTEC supply, testing, soil contact.\n\n## Downloadable Documents\n\n| # | Title | Type | Available |\n|---|---|---|---|\n| 1 | Customer Brochure A3 | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/zm-hub-docs-en\/brosur-en.pdf |\n| 2 | Report 1 \u2014 ZM General Review | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/rapor-1-en-1.pdf |\n| 3 | Report 2 \u2014 Specification & Test Control | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/rapor-2-en.pdf |\n| 4 | Report 3 \u2014 C1\u2013C5 Corrosion Resistance | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/rapor-3-en.pdf |\n| 5 | Report 4 \u2014 Testing Laboratories | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/zm-hub-docs-en\/rapor-4-en.pdf |\n| 6 | Report 5 \u2014 HDG vs ZM Comparison | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/zm-hub-docs-en\/rapor-5-en.pdf |\n| 7 | Utility-Scale PV Technical Specification | PDF | https:\/\/isotec.com.tr\/wp-content\/uploads\/2026\/04\/zm-hub-docs-en\/sartname-ges-en.pdf |\n\n---\n\n_Source: ISOTEC \u2014 https:\/\/isotec.com.tr\/eng\/zm-kaplama-teknolojisi\/_"