Abstract: Joined connections between a metallic compact body made by melting metallurgy and a body made by powder metallurgy are prepared by providing a pre-formed, unsintered pressed body having at least one component which forms a liquid phase at the sintering temperature, placing the pre-formed body directly in contact with a metallic compact body without application of external pressure and subjecting the contacted bodies to a temperature sufficient to sinter the pressed body but below the liquidus temperature of the compact body.

Abstract: Described herein is a method for the manufacture of materials such as tools, machines or parts thereof composed of at least two sections joined together by composite sintering from sintered alloys with an iron, nickel or cobalt base wherein at least two powdered metallic mixtures having differing metal carbide contents are separately prepared and poured, one after the other, into a mold and then formed into a pressed body; the pressed body is then sintered at the lowest temperature sufficient to cause alloy formation in the mixture having the lowest sintering temperature, and then hot-pressed to complete alloy formation in the pressed body and achieve maximum density.

Abstract: A sintered steel alloy, particularly for hot-working tools, of the type comprising a hard metal compound such as titanium carbide and a matrix alloy of nickel martensitic steel containing at least a small amount of titanium, is featured by a substantially higher than usual molybdenum content providing an improvement in toughness and hardness when appropriately heat treated.

Abstract: A sintered hard-material alloy for use in tool parts and parts subject to wear having a coefficient of heat expansion approximately equal to that of tool steel. The hard material alloy consists essentially of 15 to 80% by weight of hard material, preferably titanium carbide, and 20 to 80% by weight of steel with:0.25 to 0.9% carbon;5 to 35% chromium;2 to 5.0% molybdenum;0 to 3.0% manganese;0 to 1.0% silicon;0 to 3.0% copper;0 to 1% vanadium0 to 6.0% cobalt;0 to 0.5% niobium;0 to 0.01% boron;0 to 1.8% nickel;0.5 to 1.8% aluminum; andRemainder iron.A tool part having a tool body member made of tool steel and an insert made of the above mentioned hard material alloy.

Abstract: A sinter steel alloy consisting essentially of 20 to 60% of titanium carbide and a completely ferritic steel alloy, matrix of defined composition has good corrosion resistance and enhanced abrasive wear.

Abstract: A sintered alloy comprising a carbide of preferably titanium and a steel matrix of an alloy steel containing chromium, molybdenum, copper and vanadium as alloying elements provide high temperature hardness and wear resistance. Preferred alloys contain 0.8 to 1.9% by weight of manganese and up to 80% by weight of carbide.