NEW Datum Fine Grain is a precision cold rolled full hard stainless steel with fine grain structure and superior stress relief annealing properties that is specifically designed for high density patterns and to remain flat post processing when laser cut or etched. The micro grain structure of 2 to 3 microns ensures super smooth aperture walls post cutting. The enhanced annealing properties ensure flatness is maintained following both laser cutting, step etching / milling and through etching.

The NEW Datum FG is produced with the tightest thickness tolerance on the market, the same as our Datum PhD, and is available in gauges from 0.08mm to 0.25mm from stock and widths up to 610mm and any sheet length or coil.

Datum FG is perfectly suited to laser cutting and chemical etching. The fine grain structure of this material ensures that cut edges are clean and precise, with a wall finish that is smoother than standard 304 Stainless material.

The below images show the effect of different annealing process when the material is half etched.

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