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Correlation of salt spray method and humidity test

Electro zinc plated with yellow passivation are applied to mild steel screws. If the salt spray test for corrosion resist for example 100 hours, how many hours it will resist for corrosion in humidity test. Can we relate/compare both salt spray and humidity test approximately.

Mr. Singh
forged fasteners - Mumbai, Maharashtra, India
2005

They are two separate tests, because the item passes 100 hrs salt spray does not mean it will pass a humidity test,there is no real correlation.

A Wagstaff
- Lincoln, UK
2005

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