Abstract: Composition and continuous casting method for producing a low-sulphur, free-machining steel, substantially free of lead and including in weight percent about 0.05-0.40 copper, 0.005-0.040 tellurium, 0.002-0.15 bismuth, 0.002-0.05 tin, up to 0.55 carbon, and less than 0.25 sulphur, traces (up to about 0.005 weight percent) of barium, and the balance being iron. The elements bismuth, tellurium and tin are added as a molten alloy to the molten steel and uniformly distributed therethrough. The elements copper and barium can be added separately into the steel stream ahead of the molten addition inflow. The mass is then cooled to provide a solid metal casting substantially free of blemishes and relatively free of surface checking and tearing. The casting is characterized by enhanced machining properties.

Abstract: Disclosed herein is spindle ferromagnetic alloy particles having the aspect ratio (major:minor) of less than 3:1 and the coercive force of 500 to 100 Oe, and containing 0.1 to 13 atomic % of Si to Fe, and a process for producing the same.

Abstract: A cold drawn free-machining steel bar having a composition consisting essentially of, in weight percent, C up to 0.15; Mn 0.7 to 1.3; P 0.03 to 0.09; S 0.30 to 0.50; Bi 0.05 to 0.25; the sum of Ni, Cr, Mo and Cu up to 0.15 and the balance iron. The ratio % Mn / %S is from 1.7 to 3.0 and the %Mn-1.62.times.%S is from 0.05 to 0.40. The ratio %Bi /(%Ni+%Cu) is at least 2.0. The yield strength of the steel bar is further determined by the draft in cold drawing the bar from the hot rolled state and the cross section of the bar prior to draft.

Abstract: A continuous-cast low-carbon resulfurized free-cutting steel which consists in weight percentage ofC: 0.05-0.15,Mn: 0.5-1.5,P: 0.05-0.10,S: 0.15-0.40,O: 0.010-0.020,one or more of Pb, Bi, and Te as accompanying elements for improving machinability at a following content:Pb: 0.05-0.40,Bi: 0.05-0.40, andTe: 0.003-0.10,Si: 0.003 or less,Al; 0.0009 or less, andthe remainder consisting of Fe and unavoidable impurities, and contains a manganese sulfide-base inclusion with the provision that:a mean sectional area of the manganese sulfide-base inclusion present in a sectional area of 1 mm.sup.2 in the rolling direction of the steel is not less than 30 .mu.m.sup.2 ; anda rate of the number of a manganese sulfide-base inclusions not in the form of a complex with oxide is not less than 80% of the total amount of manganese sulfide-base inclusion.

Abstract: Manganese-iron base and manganese-chromium-iron base austenitic alloys designed to have resistance to neutron irradiation induced swelling and low activation have the following compositions (in weight percent): 20 to 40 Mn; up to about 15 Cr; about 0.4 to about 3.0 Si; an austenite stabilizing element selected from C and N, alone or in combination with each other, and in an amount effective to substantially stabilize the austenite phase, but less than about 0.7 C, and less than about 0.3 N; up to about 2.5 V; up to about 0.1 P; up to about 0.01 B; up to about 3.0 Al; up to about 0.5 Ni; up to about 2.0 W; up to about 1.0 Ti; up to about 1.0 Ta; and with the remainder of the alloy being essentially iron.