IN-519 cast chromium- nickel-niobium heat-resisting steel

taining 1.0 to 1.3 per cent silicon. To ensure low susceptibility to sigma-phase formation it is desirable, therefore, to conform to the upper limit of 1.0 per cent silicon given in Table 1 and to maintain the nickel/chromium ratio at unity or above. The preferred maximum of 0.8 per cent silicon mentioned in Table 1 for the ................
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