An alloy steel ferritic TO BE USED TO MOLD very long pipes with high ductility and high hardness FOR PIPES DRAIN CENTRIFUGALMENTE AN INTERIOR DIAMETER TO EXCEED 40 INCHES, STEEL consisting essentially of ON 0.12% SOBRE0, 18% carbon, ON 0.70% to 0.95% manganese, ON 0.008% phosphorus MAXIMO, ON 0.008% sulfur MAXIMO, ON 0.20% to 0.35% silicon, ON 1.05% 1.25% NICKEL ON TO 1.85% 2.25% CHROME ON 0.60% 0.75% molybdenum, 0.03% ON 0.08% vanadium, and essentially BALANCED iron.
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