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Weir Minerals North America Excellent Minerals Solutions Solutions •Materials •Geometry •Application/Process 42
Weir Minerals North America Excellent Minerals Solutions Materials: Duplex Stainless Steels • Duplex stainless steels: • CD4MCu • Ferrallium 255 • Two phase structure of ferritic and austenitic stainless steel • Good resistance to stress corrosion cracking • Nominal hardness of 250 HBN better than austenitic stainless steels but far poorer than high chrome irons (400 - 800 BHN) • Therefore, relatively poor erosion resistance for slurry service 43
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