High temperature fine-grained steel product

Details High temperature fine-grained steel product High temperature fine-grained steel product

1991-04-18

1992-05-05

Dean, R.

Metal treatment

Stock

Ferrous

148335, 148334, 420107, 420108, 420109, C22C 3800

Patent

active

051103796

ABSTRACT:
A low alloy hot work implement which retains its fine grain size at elevated working temperatures up to the range of 2,200 degrees F. to 2,250 degrees F. characterized in having a substantial content of N in the range of 75-150 ppm and, preferably, Co in the range of 0.01 to 0.1 the implement being further characterized by relatively narrow ranges of C, Mn, Si, Ni, Cr, Mo, and V, and substantial contents of Al which furnishes the basis for a substantial presence of aluminum nitrides in the final product.

REFERENCES:
patent: 3519499 (1970-07-01), Finkl et al.
patent: 4092178 (1978-05-01), Onoe et al.

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