Abstract: The invention provides a Fe—Cr alloy structure containing Cr of about 6% or more by mass but about 25% or less by mass, having a corrosion-resistant paint film containing metal powder having ionization tendencies greater than iron, with a content of the metal powder of about 20% or more by volume but about 60% or less by volume in a dry paint film, with a dry film thickness of about 5 ?m or more but about 100 ?m or less; and a manufacturing method thereof; whereby excellent corrosion resistance and excellent adhesion is provided.

Abstract: The invention provides a Fe—Cr alloy structure containing Cr of about 6% or more by mass but about 25% or less by mass, having a corrosion-resistant paint film containing metal powder having ionization tendencies greater than iron, with a content of the metal powder of about 20% or more by volume but about 60% or less by volume in a dry paint film, with a dry film thickness of about 5 &mgr;m or more but about 100 &mgr;m or less; and a manufacturing method thereof; whereby excellent corrosion resistance and excellent adhesion is provided.

Abstract: The present invention provides Cr-containing steel that has satisfactory levels in all of toughness, strength (hardness) and corrosion resistance of HAZ, and that is suitably used as parts for welded structures.

Abstract: The present invention provides a stainless steel being excellent in workability, corrosion resistance and antibacterial property. To be more specific, a stainless steel containing 10 wt % or more of Cr is rendered to contain 0.0001-1 wt % of Ag, or further one or more members selected from Sn: 0.0002-0.02 wt %, Zn: 0.0002-0.02 wt %, Pt: 0.0002-0.01 wt %, and, in addition, is rendered to dispersedly contain a total of 0.001 % or more in an area percentage of one or more members of a silver particle, a silver oxide and a silver sulphide each having a mean grain diameter of 500 &mgr;m or less. To disperse the silver particle, silver oxide and silver sulphide uniformly, the casting rate of continuous casting is preferably controlled to range from 0.8 to 1.6 m/min.

Abstract: The present invention provides a stainless steel having superior corrosion resistance, antibacterial properties, and durability, the antibacterial properties being maintained after surface treatments commonly performed including, for example, polishing. In particular, the stainless steel contains not less than 10 percent by weight of chromium, 0.001 to 0.30 percent by weight of silver, or further contains 0.001 to 1.0 percent by weight of vanadium. In addition, not less than 0.0005 weight percent of a silver oxide, the amount thereof being not more than 1.1 times that of the silver, is dispersed in the stainless steel. In order to homogeneously disperse the silver oxide in the stainless steel, when continuous casting of molten steel is performed, the casting rate for the continuous casting is preferably 0.8 to 1.6 m/min. A method for manufacturing the stainless steel is also disclosed.

Abstract: High Cr content, P added ferritic stainless steel containing, in % by weight, C: up to 0.02%, Si: up to 1.0%, Mn: up to 1.0%, S: up to 0.03%, Cr: from more than 20% to 40%, N: up to 0.015%, Al: up to 0.5%, and P: from more than 0.06% to 0.20%, the balance being Fe and incidental impurities, is improved in atmospheric corrosion resistance and rust prevention. The stainless steel may further contain at least one element selected from the following groups: (1) Mo: up to 4.0%; (2) one or more elements of Ti: up to 1.0%, Nb: up to 1.0%, Ta: up to 1.0%, V: up to 1.0%, W: up to 1.0%, Zr: up to 1.0%, and B: up to 0.01%; and (3) one or more elements of Cu: up to 1.0%, Ni: up to 5.0%, and Co: up to 1.0%.

Abstract: An Fe-Cr-Al alloy having excellent oxidation resistance and high temperature brittleness resistance comprises:Cr: 10 to 28 wt. %,Al: 1 to 10 wt. %, andB : 0.0003 to 0.010 wt. %,andLa: 0.01 to 0.20 wt. % andZr: 0.01 to 1.0 wt. %,while within the scope of Equation (1)0.1.ltoreq.[wt. % of Zr]/[wt. % of La].ltoreq.20 (1)and wherein elements of impurities are limited as follows:C: 0.05 wt. % or less,N: 0.02 wt. % or less,Si: 0.5 wt. % or less,Mn: 1.0 wt. % or lessTi: less than 0.05 wt. %and the balance consisting of Fe and incidental impurities.

Abstract: The method of producing steel pipe material for an oil well is characterized in that, as for the chemical composition of steel, B contained steel is adopted avoiding the addition of Ti which increases the values of non-metallic inclusions to decrease machinability, the value of N is limited to not more than 0.003% to be decreased in content of nitrides, coarse crystal grains due to the decreased content of N are prevented through austenizing of steel under rapid heating, so that such a steel pipe material for an oil well can be obtained that which has resistance to sulfide stress corrosion in addition to satisfactory strength and machinability.