1 Scope
This European Standard defines the grades of abrasion resistant white cast irons.
It specifies the grades in terms of:
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— chemical composition;
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— hardness.
The types of abrasion resistant white cast irons covered by this standard are:
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a) unalloyed or low alloy cast irons;
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b) nickel-chromium cast irons covering two general types:
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— 4 % Ni 2 % Cr cast irons;
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— 9 % Cr 5 % Ni cast irons;
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c) high chromium cast irons covering four ranges of chromium content:
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— 11 % < Cr ≤ 14 %;
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— 14 % < Cr ≤ 18 %;
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— 18 % < Cr ≤ 23 %;
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— 23 % < Cr ≤ 30 %.
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This European Standard does not define the abrasion resistant grades of ausferritic
spheroidal graphite cast irons which are subject of EN 1564.