Abstract: A non-magnetic steel composition suitable for use in various steel and concrete structures, particularly magnetic floating high-speed railways, nuclear fusion facilities and marine structures and appliances where non-magnetic property is required. The steel composition containsC: 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%Cr: more than 1.0 to 5.5%P: not more than 0.015%S: not more than 0.005%and may further contain at least one of Ti, V, Nb, W, Mo, and B in an amount ranging from 0.01 to 0.5%, in total, 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%, in total.

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: Concrete reinforcing steel bars or wires useful for reinforcing concrete structures, such as concrete structures built on seashores and marine concrete structures, and concrete bridges, which are exposed to sea salt particles and sea-water splashes, and very excellent in preventing deteriorations or decays of these concrete structures. The steel bars or wires have the following composition,C: not more than 1.0%Si: not more than 0.25%Mn: not more than 2.0%Al: 10.0 to 20.0%CR: 0.5 to 5.5%P: not more than 0.015%S: not more than 0.005%Balance: iron and unavoidable impurities.The steel bars or wires may further contain at least one element selected from Ti, V, Nb, W, Mo or B in such amounts that the total weight range for elements other than B is 0.01 to 0.5% and in amounts ranging from 0.0001 to 0.0005% for B. The bar or wire also may optionally contain Cu and/or Ni in total amounts ranging from 0.1 to 5.5%.

Abstract: A corrosion-resistant amorphous surface alloy is disclosed which is 150 .mu.m or less thick and bonded onto a substrate crystalline metal or alloy and processed by irradiation of high energy density beam, such alloy being composed of 8-19 at % Cr, 17-22 at % in the sum of P and 2-7 at % B, and the remainder being Ni, Ni--Co containing Co in an atomoic ratio of Co/Ni of 2/3 or less, or Ni--Fe or Ni--Co--Fe containing Fe in an atomic ratio of Fe/Ni or Fe/Ni+Co of 1/5 or less. Also disclosed is a process for producing such alloy.

Abstract: About ten weight percent nickel is added to a Fe-base alloy which has a ferrite microstructure to improve the high temperature castability and crack resistance while about 0.2 weight percent zirconium is added for improved high temperature cyclic oxidation and corrosion resistance. The basic material is a high temperature FeCrAl heater alloy, and the addition provides a material suitable for burner rig nozzles.

Abstract: An ultrahigh carbon steel having a composition of carbon in an amount of from about 0.8 weight percent up to the maximum solubility limit of carbon in austenite, aluminum in an amount of from about 0.5 to about 10 weight percent, an effective amount of a stabilizing element acting to stabilize iron carbide against graphitization, and the balance iron. Preferably, the aluminum is present in an amount of from about 0.5 to about 6.4 weight percent and the stabilizing element is chromium. The steel has excellent ductility and is readily hot, warm and cold worked without cracking. It is particularly useful in superplastic forming operations, and may be processed to a suitable microstructure by any technique which reduces its grain size to about 10 microns or less, and preferably to about 1 micron. Such a very fine grain size is readily acheived with the steel, and the aluminum and stabilizing additions act to retain the fine grain size during superplastic processing.

Abstract: Disclosed is a magnetic head core material having very high corrosion resistance even under severe conditions and a method for preparing the same. The material consists of 3 to 6 wt % of aluminum, 7 to 12 wt % of silicon, not more than 3 wt % of chromium and the substantial balance being iron.

Abstract: A highly corrosion resistant amorphous iron-base alloy having the formula Fe.sub.a Cr.sub.b Al.sub.c P.sub.d (B,C).sub.e where, in a/o:a=100-(b+c+d+e)b=4 to 6c=7.5 to 13d=12 to 14e=1 to 8, and provided further thate+d=15 to 22, ande+d+c=27 to 35.The alloy has excellent corrosion resistance and is easy to pulverize, thus, making it ideal as a metallic pigment in paints, plasma spray coating powders, and as a filler for plastics.