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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COFRAC 1-1322 Oraison, FR
DIN EN ISO 21149 DIN EN ISO 10993-5 BS EN 12697-12:2018 ISO 10993-12 BS EN 12697-13:2017 + 3 more
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COFRAC 1-1720 Val-De-Reuil, FR
BS ISO 9227:2022
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COFRAC 1-0036 Cergy, FR
DIN EN ISO 6508-1 DIN EN 2002-002 ASTM E 21 DIN EN 10045-1 ASTM E 92 + 3 more
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COFRAC 1-5703 Bron Cedex, FR
NF T 30-074 NF T 30-094 NF T 34-550 NF P 98-620 NF T 30-012 + 3 more
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COFRAC 1-0064 Saint-Marcel, FR
DIN EN 1254-2 DIN EN 1254-3 DIN EN 1254-5 DIN EN 12101-10 BS EN 50291-1:2018 + 3 more
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COFRAC 1-1648 Nogent, FR
(BS EN ISO 6892-1: 2019) DIN EN ISO 643 EN ISO 12624 ISO 4967 ASTM E8/8M + 3 more
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COFRAC 1-1542 Saint Martin D'Heres, FR
DIN EN 1279-2 DIN EN 1279-5 DIN EN 12094-10 EN 1279-6 – Méthode de référence DIN EN 14449 + 3 more
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COFRAC 1-0912 Colomiers, FR
ASTM E8/E 8M DIN EN ISO 10523 2012-04 ASTM E 21 ASTM B557/B557M ASTM E 139 + 3 more
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COFRAC 1-1793 Saint Apollinaire, FR
ISO 13320 BS ISO 9277:2010 DIN EN ISO 643 ASTM E 112 ISO 10993-18 + 3 more
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GINGER CEBTP

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COFRAC 1-0002 Elancourt, FR
DIN EN 1097-1 DIN EN ISO 10140-2 DIN EN 933-3 DIN EN 1097-2 DIN EN ISO 10140-4 + 3 more
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COFRAC 1-7322 Ostwald Cedex, FR
(BS EN ISO 6892-1: 2019) ASTM E8/E 8M DIN EN 10002-1 ASTM E8 et E8M DIN EN 2002-001 + 3 more
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COFRAC 1-1021 Saint Beauzire, FR
ISO 14698-1 DIN EN ISO 17141 DIN EN 12469 DIN EN ISO 11138-2 DIN EN ISO 11737-2 + 3 more
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COFRAC 1-1847 Lyon 7Eme, FR
DIN EN 10002-1 BS ISO 9227:2022 DIN EN ISO 643 EN ISO 12624 DIN EN 10045-1 + 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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COFRAC 1-6910 Muret, FR
ASTM B 117 BS ISO 9227:2022
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COFRAC 1-6323 Rochefort, FR
ISO 604 BS ISO 9227:2022 DIN EN 2563 DIN EN 2561 DIN ISO 14256-2 + 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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