Photomicrograph Database

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Artifact ID DK 0255B/0400
Negative Number NS249
Magnification 100x
Etchant Marshall's and 2% nital
Photo Date 7/25/2000


Alloy

iron

Structure

Metallographic Description

Carburized iron, with carbon contents up to 0.7%. The pearlite, found mostly in the center, is very dark. There is pure ferrite near the edges, so the content specimen runs the gamut from pure ferrite to 100% pearlite. There is heavy corrosion on the edges, leaving only islands of ferrite there. The few slag stringers present line up longitudinally.


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