Abstract: An electromagnetic stainless steel consists essentially of not more than 0.015 wt % of C, not more than 3.0 wt % of Si, not more than 0.5 wt % of Mn, not more than 0.030 wt % of P, not more than 0.030 wt % of S, 4-20 wt % of Cr, 0.2-7.0 wt % of Al, 0.02-0.50 wt % of Bi and the remainder being Fe and inevitable impurity and has excellent magnetic properties, electric resistance, cold forgeability and machinability.

Abstract: The weldable austenitic stainless steel having a high machinability and an improved cold deformation has the following composition by weight: C less than 0.1%; Si less than 2%; Mn less than 2%; S less than 0.03%; Ni between 8 and 10%; Cr between 15 and 25%; P less than or equal to 0.04%; Mo less than 0.5%; Cu between 1 and 5%; N between 0.02 and 0.07%; Ca more than 30.10.sup.31 4 %; 0 more than 70.10.sup.-4 %; Al less than 50.10.sup.-4 %; the ratio Ca/O being between 0.3 and 0.6.

Abstract: A process for forming contact material of an electrode comprises the steps of preparing chromium of which oxygen content is substantially reduced, forming a molten mixture of the chromium and copper, atomizing the molten mixture into fine particles to obtain Cu-Cr alloyed powder, compacting Cu-Cr alloyed powder under desired pressure, and sintering the compacted alloyed powder. The oxygen content of the chromium may be reduced until less than 0.1 wt %. In a course of the process, a metal having melting point lower then copper may be blended. The metal may be blended in Cu-Cr alloyed powder, or blended in the molten mixture of copper and chromium. Alternatively, the process further includes the steps of forming a second molten mixture of copper and a metal having melting point lower than copper, atomizing the second molten mixture into fine particles to obtain alloyed powder of copper and the metal, and blending Cu-Cr alloyed powder with the alloyed powder of copper and the metal.

Abstract: A high purity martensitic stainless steel alloy containing only critically limited amounts of minor elements including manganese, silicon, tin, phosphorus, aluminum, antimony and arsenic has high strength and toughness and unique resistance to both reversible and irreversible embrittlement.

Abstract: Alloys are provided which consist essentially by weight percentages of from about 10.5% to about 28% Ni, from about 14.8% to about 23% Cr, from about 3% to about 6.6% Si, up to about 4% Al, from about 3% to about 6.6% total content of Si plus Al, from about 0.2% to about 4% Mn, from about 0.15% to about 1.6% Mo, from about 0.25% to about 1.25% W, from about 0.10% to about 0.75% Cb, from about 0.12% to about 1.2% C, from about 0.05% to about 0.45% Ti, and the balance essentially iron and the usual impurities. The alloys may optionally contain up to about 0.1% Ca, up to about 0.25% Zr, up to about 0.15% B, up to about 0.3% N and up to about 0.15% of rare earth components.

Abstract: A material for electric heater element sheathing, which has good weldability, is oxidation- and corrosion-resistant, and forms an eye-pleasing dark gray or black surface oxide, consists essentially of, by weight, from about 8.75-15.5% nickel, about 19.5-21.0% chromium, about 0.30-0.50 manganese, about 0.50-2.0% silicon, about 0.25-0.60% aluminum, about 0.25-1.0% titanium, up to about 0.05% carbon, up to about 0.005% sulfur, up to about 0.75% copper, up to about 1.0% cobalt, up to about 1.0% molybdenum, up to about 0.02% phosphorus, about 0.001-0.015% calcium plus magnesium and remainder essentially iron, wherein the Ferrite Number is between 1 and 15.

Abstract: A high cold-forging electromagnetic stainless steel comprises not more than 0.02 wt. % of C, not more than 0.50 wt. % of Si, not more than 0.50 wt. % of Mn, 10.0-18.0 wt. % of Cr, 0.30-1.50 wt. % of Mo, 0.05-0.50 wt. % of Ti, 0.30-2.00 wt. % of Al, 0.0005-0.05 wt. % of B, not more than 0.05 wt. % of N and the balance being substantially Fe. This steel may further contain a given amount of at least one of Nb, V, Pb, Ca, Se, S and REM. Such stainless steel is used as a material of parts in an electronically controlled fuel injection system.

Abstract: A material for electric heater element sheathing, which has good weldability, is oxidation- and corrosion-resistant, and forms an eye-pleasing dark gray or black surface oxide, consists essentially of, by weight, from about 8.75-15.5% nickel, about 19.5-21.0% chromium, about 0.30-0.50 manganese, about 0.50-2.0% silicon, about 0.25-0.60% aluminum, about 0.25-1.0% titanium, up to about 0.05% carbon, up to about 0.005% sulfur, up to about 0.75% copper, up to about 1.0% cobalt, up to about 1.0% molybdenum, up to about 0.02% phosphorus, about 0.001-0.015% calcium plus magnesium and remainder essentially iron, wherein the Ferrite Number is between 3 and 15.

Abstract: Resulphurized austenitic stainless steel with improved machinability, characterized in that its weight composition is the following:carbon lower than or equal to 0.15%silicon lower than or equal to 2%manganese lower than or equal to 2%molybdenum lower than or equal to 3%nickel between 7 and 12%chromium between 15 and 25%sulphur between 0.10 and 0.40%calcium higher than or equal to 30.times.10.sup.-4 %oxygen higher than or equal to 70.times.10.sup.-4 %the ratio of the calcium content and of the oxygen content Ca/O being between 0.2 and 0.6.

Abstract: This invention relates to iron-base alloy compositions, nickel containing austenitic ferrous alloy compositions (especially low nickel compositions) and dopants added to low nickel austenitic alloys as a means of improving the elevated temperature oxidation resistance of the resultant material.

Abstract: Soft magnetic stainless steel having good cold forgeability comprising, by weight, less than 0.015% of C, less than 0.20% of Si, less than 0.35% of Mn, less than 0.010% of S, 8 to 13% of Cr, less than 0.020% of Al, less than 0.0070% of O, less than 0.0100% of N and the balance of Fe and inevitable impurities, with a proviso that C+N content is less than 0.020%. The stainless steel can be incorporated additionally at least one of 0.03 to 0.20% of Ti, 0.002 to 0.02% of Ca, less than 0.30% of Bi, less than 0.040% of Se, 0.002% to 0.040% of Te, 0.02 to 0.15% of Zr, less than 2.5% of Mo, less than 0.50% of Cu, less than 0.50% of Ni, less than 0.20% of Nb and less than 0.20% of V. The stainless steel is suitable as magnetic core materials for use in electronic fuel injection devices, electromagnetic valves, magnetic sensors, etc.

Abstract: The present invention relates to a soft magnetic steel improved in electric resistance, coercive force, magnetic flux density, magnetic response, cold forgeability, machinability, and corrosion resistance, which is characterized by the composition containing by weight, 0.015% or lower C+N, 0.20% or lower Si, 0.20% or lower Mn, 7 to 13% Cr, 2 to 5% Al, and balance of Fe with impurities, which is applicable to core materials of electronic fuel injection systems, solenoid valves, electromagnetic sensors, etc.

Abstract: A non-magnetic steel material suitable for use in various steel and concrete structures such as magnetic floating high-speed railways, nuclear fusion facilities and marine structrures and appliances where non-magnetic properties are required. The steel composition contain (by weight):C: not more than 1.0%Si: not more than 0.25%Mn: not more than 2.0%Al: more than 20.0 to 37.3%P: not more than 0.015%S: not more than 0.005%Cr: more than 5.5 to 15.0%and may further contain at least one of Ti, V, Nb, W, Co, Mo and B in an amount ranging from 0.01 to 0.5% for the elements other than B, and in an amount ranging from 0.0001 to 0.005% for B, and at least one of Cu and Ni in an amount ranging from 0.1 to 5.5%.

Abstract: An austenitic stainless steel having improved free cutting properties is disclosed, which consists essentially of, on a weight ratio, C.ltoreq.0.2%. Si.ltoreq.2.0%, Mn.ltoreq.2.0%, 7.5%.ltoreq.Cr.ltoreq.30.0%, Ni.ltoreq.40.0%, 0.005%.ltoreq.Bi.ltoreq.0.50%, 0.0003%.ltoreq.B.ltoreq.0.10%, 0.002%.ltoreq.S.ltoreq.0.40%, P.ltoreq.0.02%, N.ltoreq.0.05% and/or O.ltoreq.0.005% and the balance being Fe.

Abstract: A nickel-chromium stainless steel having improved corrosion resistances and machinability, comprising less than 0.08 wt. % of C, less than 1.0 wt. % of Si, less than 0.7 wt. % of Mn, less than 0.04 wt. % of P, less than 0.005 wt. % of S, 8.0 to 12.0 wt. % of Ni, 17.0 to 20.0 wt. % of Cr, 0.40 to 0.80 wt. % of Mo, less than 0.3 wt. % of Cu, 0.03 to 0.5 wt. % of Sn and the balance of Fe.In another embodiment of the present invention, 0.03 to 0.1 wt. % of Bi is added to the above-described composition to further improve the machinability of the stainless steel.

Abstract: A soft magnetic stainless steel consists essentially of, by weight, up to 0.03% of C, 0.40 to 1.10% of Si, up to 0.50% of Mn, 9.0 to 19.0% of Cr, 0.31 to 0.60% of Al, 0.01 to 0.03% of S, 0.10 to 0.30% of Pb, 0.02 to 0.25% of Ti, 0.02 to 0.10% of Zr, and up to 0.03% of N, and the balance of Fe and inevitable impurities, with a proviso that the C+N content is not more than 0.04% and the Si+Al content is not more than 1.35%. The steel has a magnetic flux density of 13,000 G or more and a coercive force of 1.2 Oe or less as magnetic properties, and a tensile strength of 41 kgf/mm.sup.2 or less and a critical compressibility of 50% or more as formability in cold forging. The steel is suitable for manufacturing, by cold forging, parts with complex shapes such as cores of solenoid operated valves and electromagnetic clutches, and bodies of electronic fuel injection apparatuses for internal combustion engines.

Abstract: A soft magnetic stainless steel consisting essentially of, by weight, up to 0.03% of C, 2.0 to 3.0% of Si, up to 0.40% of Mn, 0.015 to 0.050% of S, 10 to 13% of Cr, 0.05 to 0.20% of Ti, up to 0.03% of N, up to 0.010% of Al, and the balance of Fe and inevitable impurities, with a proviso that the C+N content is not more than 0.05%. The steel has a maximum permeability of not less than 4400 and a magnetic flux density of not less than 12,000 G as magnetic properties, together with a fatigue strength after welding of not lower than 120 kgf cm.sup.2, retains the magnetic properties even after annealing at a high temperature of 920.degree. C., and is excellent in electrical resistance, corrosion resistance, mechanical properties and machinability.

Abstract: A method of adding a low-melting point metal (e.g. Pb or Bi) to liquid steel for producing a free-cutting steel in a consistent manner and in high yield of addition is disclosed. In accordance with the method, at least one member selected from said low-melting point metal and an oxide thereof, and at least one member selected from the group consisting of quick lime and a carbonaceous material are mixed in specified optimum proportions and the mixture is blown into the liquid steel through an injection lance. The liquid steel may be agitated while the mixture is added, and the appropriate conditions for the agitation of the steel are also specified.

Abstract: Amorphous alloys containing zirconium as an amorphous forming metal and having teh formula X.sub..alpha. Z.sub..gamma. wherein X is at least one of Fe, Co and Ni, .alpha. is 80 to 92 atomic %, Z is zirconium, .gamma. is 8 to 20 atomic % and the sum of .alpha. and .gamma. is 100 atomic %, cause little variation of properties during aging and embrittlement because they contain no metalloid as the amorphous forming element, and they further have excellent strength, hardness, corrosion resistance and heat resistance and maintain superior magnetic properties which are characteristic of iron group elements.