Duracast® N460 is cast material produced by Bradken foundries with an automated moulding machine allowing high volume, low cost manufacturing. After casting Duracast® N460 is heat treated to maximise its wear and impact resistance.
Duracast® N460 conforms to the white iron alloy designated by ISO21988/JN/HBW555Cr9;
commonly referred to as NiHard 4. The major alloying elements, Chromium, Nickel
and Silicon, help to give this material its superior properties. A typical chemical composition is provided below:
The microstructure of Duracast® N460 is particularly important in providing good wear performance. After casting Duracast® N460 into the desired shape, a heat treatment cycle is used to transform the softer as-cast microstructure into the hard, long-lasting material needed in abrasive applications. This microstructure consists of eutectic M7C3 carbides in a predominately martensitic matrix.
Volume Fraction of Carbides