ISO 9227

Salt Spray Corrosion Testing

Salt spray testing subjects coated or treated metallic specimens to a controlled saline fog environment to assess corrosion resistance and coating adhesion. ISO 9227 defines three variants: neutral salt spray (NSS), acetic acid salt spray (AASS), and copper-accelerated acetic acid salt spray (CASS). Results guide coating selection for automotive, marine, and outdoor applications.

What it measures

  • Time to first visible corrosion (hours)
  • Coating adhesion after salt-fog exposure
  • Creep corrosion from a scribe line
  • Overall corrosion rating per ISO 10289 / ISO 4628
🇩🇪 DIN EN ISO 9227 🇬🇧 BS EN ISO 9227 🇫🇷 NF EN ISO 9227 🇮🇹 UNI EN ISO 9227 🇪🇸 UNE EN ISO 9227 🇳🇱 NEN EN ISO 9227 🇩🇪 DIN EN ISO 10289 🇬🇧 BS EN ISO 10289 🇫🇷 NF EN ISO 10289 🇮🇹 UNI EN ISO 10289 🇪🇸 UNE EN ISO 10289 🇳🇱 NEN EN ISO 10289
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ENAC LE130 Madrid, ES
DIN EN 60335-2-51 DIN EN 60335-2-43 IEC 62054-21 IEC 60335-2-51 DIN EN 60335-2-99 + 3 more
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ACCREDIA 01279 Crema, IT
BS ISO 9227:2022 ASTM E 415 21 ASTM E1086-22 ASTM A 262-15
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ENAC LE2199 Vitoria-Gasteiz, ES
UNE-EN ISO 6270-2 UNE-EN ISO 9227 UNE-EN ISO 11997-1 UNE-EN IEC 60068-2-11 UNE-EN ISO 22479 + 3 more
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ACCREDIA 01268 Campi Bisenzio, IT
DIN CEN ISO/TS 16179 DIN EN 12472 ISO 16181-1 DIN EN ISO 20344 ISO 17706 + 3 more
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ENAC LE894 Bellaterra, ES
UNE-EN 12015 UNE-EN 50065-1 UNE-EN IEC 61000-6-4 UNE-EN IEC 61000-6-3 UNE-EN 61000-6-3 + 3 more
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COFRAC 1-6493 Marignane, FR
ISO 2409 ISO 2808 BS ISO 9227:2022 ASTM D3330 ISO 8510-2 + 1 more
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ACCREDIA 01291 Orbassano, IT
BS ISO 9227:2022 DIN EN 50525-2-71 ASTM B117-19 ISO 3795 ISO 527-2 + 3 more
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DAkkS D-PL-17740-02-01 Adorf, DE
DIN EN ISO 5667-1 (A 4) DIN 38402-A 11 DIN ISO 5667-5 (A 14) DIN 38402-A 18 DIN EN ISO 5667-3 (A 21) + 3 more
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MATE SRL

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ACCREDIA 01525 Torrita di Siena, IT
DIN EN 60068-2-67 ISO 4628-3 DIN EN IEC 60068-2-52 DIN EN 60068-2-30 IEC 60068-2-80 + 3 more
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MATED

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ACCREDIA 01130 Trento, IT
DIN EN 13180 ISO 11357-1 DIN EN IEC 62631-3-1 DIN EN IEC 62631-3-2 DIN EN IEC 60068-2-11 + 3 more
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COFRAC 1-6910 Muret, FR
ASTM B 117 BS ISO 9227:2022
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ACCREDIA 01118 Ronchi dei Legionari, IT
ASTM E 415 21 ASTM E45-25 DIN EN ISO 6506-1 DIN EN ISO 18203 DIN EN ISO 2639 + 3 more
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METAL-TEST

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ENAC LE2431 Montmeló, ES
UNE-EN ISO 4136 ASTM E290 UNE-EN ISO 5178 ASTM E 112 ASTM A 370 + 3 more
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MTC

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ACCREDIA 00581 Rosta, IT
ASTM E 415 21 DIN EN ISO 6506-1 DIN EN ISO 3887 DIN EN ISO 9015-1 DIN EN ISO 6507-1 + 3 more
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DAkkS D-K-15048-01-01 Allmersbach im Tal, DE
Parallelendmaße * 0,5 mm DIN EN ISO 3650:1999 Parallelendmaße > 100 mm Messschieber für Außen-, 0 mm + 3 more
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DAkkS D-K-19120-01-01 Gießen, DE
Flüssigkeitsvolumen * Kolbenhubpipetten Manuell betätigte spritzen Mehrfachdispenser + 3 more
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DAkkS D-K-15086-01-01 Wedel, DE
- Gleichspannung Messverstärker > 120 mV > 1 V > 12 V > 1000 V + 3 more
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DAkkS D-K-20451-01-00 Bovenden, DE
Konventioneller Wägewert/ Massenormale Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO + 3 more
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DAkkS D-K-18097-01-01 Glindenberg, DE
Railway brake — magnetic track brakes (U auch Vor-Ort Kalibrierung Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32)
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ACCREDIA 01404 Ferrara, IT
DIN EN 50155 DIN EN 55014-1: 2018 IEC 61000-4-16: 2015 DIN EN IEC 60068-2-52 IEC 61326-1: 2012 + 3 more
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DAkkS D-K-20080-01-01 Wüstenrot, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO elektronische Waagen
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ACCREDIA 01498 Civitanova Marche, IT
DIN EN 12720 BS ISO 9227:2022 DIN EN 14382 DIN EN ISO 2808 DIN EN 12721 + 3 more
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DAkkS D-PL-21530-01-01 Sand am Main, DE
DIN EN IEC 60068-2-38 DIN EN IEC 60068-2-11 BS ISO 9227:2022 DIN EN 60068-2-14 IEC 60068-2-60 + 3 more
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Pontlab Srl

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ACCREDIA 00913 Pontedera, IT
DIN EN ISO 6508-1 ASTM E407-23 (2023) BS EN 1711 DIN EN ISO 11644 ASTM B117-19 + 3 more
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Industries

Automotive Marine Construction Coatings Electronics

Related Standards

  • ISO 9227 Corrosion tests in artificial atmospheres -- Salt spray tests
  • ISO 10289 Methods for corrosion testing of metallic and other inorganic coatings
  • ASTM B117 Standard Practice for Operating Salt Spray (Fog) Apparatus
  • ISO 4628-3 Paints and varnishes -- Rusting assessment

Regulatory Context

This test method is referenced by:

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