Corrosion resistance
When determining the corrosion resistance, hardware parts/components are tested for their resistance to corrosion (rusting) in a corrosion chamber under defined conditions.
Test:
The neutral salt spray test (NSS test) is carried out in a corrosion chamber in a controlled
environment. A 5% sodium chloride solution is sprayed in a defined quantity and distribution in the
corrosion chamber.
Usual test durations are 24 h / 48 h / 96 h / 240 h and 480 h.
The corrosiveness of the test samples is assessed on the basis of different criteria depending on the test duration:
– Appearance after the test
– Appearance after removal of superficial corrosion products
– Time period until the first signs of corrosion appear
– Changes in mechanical properties
Building elements / standards
The following building elements can be classified and tested:
| Building element | Test according to | Classification according to |
| Window fittings, hinges, strike plates, locks, handles, door shields, rosettes and protective fittings | DIN EN ISO 9227 – Corrosion tests in artificial atmospheres – Salt spray test
DIN EN 1670 locks |
DIN EN ISO 9227 and/or DIN EN 1627 |
Excerpt from relevant standards:
DIN EN ISO 9227
corrosion tests in artificial atmospheres – salt spray test
DIN EN 1670
Locks and building hardware – Corrosion resistance
Requirements and test methods
Please do not hesitate to contact us for further technical verification based on
other normative principles.
Minimum requirements in Germany:
| Requirements according to | class/limit values |
| no requirements | no requirements |
