ASTM D4627

ASTM D4627 – Standard Test Method for Iron Chip Corrosion for Water–Miscible Metalworking Fluids

Description:

Significance and Use

5.1 The results obtained by this test are a useful guideline in determining the ability of water-miscible metalworking fluids to prevent or minimize rust under specific conditions. There is usually a relationship between the results of this test and a similar ability of the subject coolant to prevent rust on nested parts or in drilled holes containing chips, etc. It must be understood, however, that conditions, metal types, etc. found in practice will not correlate quantitatively with these controlled laboratory conditions. The procedure may not be able to differentiate between two products with poor rust control due to the wide spacing between test dilutions.

Scope

1.1 This test method covers evaluation of the ferrous corrosion control characteristics of water–miscible metalworking fluids.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.2.1 Exception—Note 1 contains inch-pound units since the drill sizes and feed rates do not have readily available metric equivalents.

1.2.2 Exception—U.S. Standard sieve sizes include mesh values.