Steel for making very large pipe molds

Details Steel for making very large pipe molds Steel for making very large pipe molds

1993-06-25

1994-07-19

Yee, Deborah

Alloys or metallic compositions

Ferrous

Chromium containing, but less than 9 percent

148335, C22C 3846, C22C 3844

Patent

active

053307070

ABSTRACT:
A ferritic alloy steel that may be used for making very large pipe molds with high ductility and high toughness for centrifugally casting pipe with an inside diameter that may exceed 40 inches, the steel consisting essentially of from about 0.12% to about 0.18% carbon, about 0.70% to about 0.95% manganese, about 0.008% maximum phosphorous, about 0.008% maximum sulphur, about 0.20% to about 0.35% silicon, about 1.05% to about 1.25% nickel, about 1.85% to about 2.25% chromium, about 0.60% to about 0.75% molybdenum, about 0.03% to about 0.08% vanadium, and balance essentially iron.

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