Cast White Iron
Duracast® DC17
Overview
Duracast® DC17 is a white cast iron commonly used in mining applications that experience severe wear. This product combines the abrasion resistance of alloyed white iron with the ability to cast custom shapes to form a unique wear solution for varied applications.
Duracast® DC17 Cast White Iron
Manufacture
The Duracast® DC17 castings are produced by Bradken’s in-house foundries. An automated moulding machine allows for high volume, low-cost manufacturing. Custom shapes can be cast to solve complex wear problems and to allow for attachment methods such as fish-tail liner bolts. A heat treatment process is used to maximise its wear resistance.
Composition
Duracast DC17 is a enhanced white iron alloy based on ISO21988/JN/HBW555Cr16. The major alloying elements, Chromium, Carbon and Molybdenum, give this material its superior abrasion resistant properties.
A typical chemical composition is provided below:
Carbon
2.4%-3.6%
Silicon
0.2%-1.0%
Manganese
0.5%-1.5%
Chromium
14.0%-18.0%
Molybdenum
1.2%-3.4%
Microstructure
The microstructure of Duracast DC17 is crucial in providing superior wear performance. The heat treatment cycle transforms the softer as-cast microstructure into hard, wear-resistant material. This microstructure consists of a network of interconnected eutectic M7C3 carbides in a martensitic matrix.
Typical Properties
Bulk Hardness
600–750 HV50
Carbide Hardness
≥1200 HV0.5
Volume Fraction of Carbides
25%–30%
Density
7500 kg/m3
Duracast® DC17 Cast White Iron
Duracast® DC17 Casting
Duracast® DC17 Microstructure
