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4330 UNS G43300

4330 is a heat treatable high strength steel alloy containing chromium, nickel and molybdenum. Carbon content is in the 0.30% range and in the heat treated condition the alloy has good toughness and fatigue strength. Applications are those that require a good combination of strength and impact resistance, such as gears, aircraft landing gear, axles or shafts for power transmission.

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