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Asp 2052 HSS Pm390/S390 Powder Metallurgy High Speed Steel. High Performance Alloy: Optimal high cobalt (8%), high vanadium, and high tungsten (10%) alloyed steel. Superior Hardness: Heat treatable to HRC 67-69 with abrasion resistance comparable to T15. Excellent Red Hardness: Red hardness superior to M42, suitable for high-temperature cutting. Ideal for Tough Materials: Suitable for machining nickel-base and titanium alloys under extreme stress. Versatile Tool Applications: Perfect for gear hobs, shapers, milling cutters, twist drills, and taps. Customizable Dimensions: Length can be customized within the range of 2500-5500mm. OEM Support Available: OEM service available for customized gear hob usage requirements.