NF EN ISO 4404-2

Petroleum and related products - Determination of the corrosion resistance of fire-resistant hydraulic fluids - Part 2 : non-aqueous fluids

ISO 4404-2:2010 specifies a procedure for the determination of the corrosion-inhibiting properties of non-aqueous hydraulic fluids within the category HFD, as classified in ISO 6743?4.

It provides a qualitative assessment of corrosion of five of the most common metals used in the construction of hydraulic systems, but other metals and/or alloys could be added or substituted for these metals for particular installations.

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