Nippon Yakin Kogyo Co., Ltd.

Asahi Glass Company, Limited

Other

Shigeru Hirata

Kazuhiro Yamakawa

Yoshiyuki Sato

Yuji Ikegami

Hiroyuki Matsuoka

Tsutomu Anbo

Tsutomu Mizukami

Kun Wang

Takayuki Watanabe

Taizo Sato

Tsutomu Omori

Tatsuya Itoh

Hidekazu Todoroki

Fumiaki Kirihara

Kazuhito Takimoto

Toshio Miura

Jun Agari

Syun-ichi Morita

A highly corrosion-resistant Ni—Cr Mo—N alloy including in weight %, Ni: 22.0% or more, Cr: 22.0% or more, Mo: 5.0% or more, N: 0.180% or more, Si, Al, Mn, Fe as a remainder, and inevitable impurities, wherein the composition satisfies the following Formulas (1) to (3), and an area ratio of a sigma phase in a cross-sectional structure measured by EBSD after holding at 950° C. for 30 minutes is 1.0% or lessCr+3.3×Mo+16×N≥43.0  (1)7.3×Mo—Ni≤21.0  (2-1)1.3×Cr—Ni≤5.7  (2-2)1.6×Si+0.99×Mn+2.2×Al≤0.95  (3).

Highly corrosion-resistant Ni-Cr-Mo-N alloy having superior phase stability

Alloy compositions, structures, and production methods for an appropriate slit cut surface shape improve productivity by increasing welding speed and stabilizing quality during high speed welding in Ti-containing Fe—Ni—Cr alloy production. The Ti-containing Fe—Ni—Cr alloy contains, hereinafter in weight %, C: 0.001 to 0.03%, Si: 0.05 to 1.25%, Mn: 0.10 to 2.00%, P: 0.001 to 0.030%, S: 0.0001 to 0.0030%, Ni: 15 to 50%, Cr: 17 to 25%, Al: 0.10 to 0.80%, Ti: 0.10 to 1.5%, N: 0.003 to 0.025%, O: 0.0002 to 0.007%, Fe as a remainder, and inevitable impurities, and when the number and size of titanium nitrides contained in material are evaluated in a freely selected field of view of 5 mm2, the titanium nitrides having sizes of not more than 15 μm are not less than 99.3% of total of the titanium nitrides.

Ti-containing Fe—Ni—Cr alloy having superior quality on slit cut surface

Provided is an Fe&#x2014;Ni&#x2014;Cr alloy that has excellent surface characteristics and enables formation of a blackened coating having excellent blackening characteristics and peeling resistance. The Fe&#x2014;Ni&#x2014;Cr alloy has a chemical composition containing, by mass %, C, Si, Mn, P, S, Cr, Ni, Mo, Co, Cu, N, Ti, Al, O, and H, the balance being Fe and inevitable impurities, and satisfying formulae (1) to (4): (1) T1=11&#xd7;[% N]+0.1; (2) T2=&#x2212;39&#xd7;[% N]&#x2212;1.0; (3) A1=7.5&#xd7;[% N]+0.1; (4) A2=&#x2212;42.5&#xd7;[% N]+1.0, where [% M] represents content (mass %) of element M in the alloy, and T1, T2, A1, and A2 satisfy relationships T1&#x3c;[% Ti]&#x3c;T2 and A1&#x3c;[% A1]&#x3c;A2.

Fe-Ni-Cr alloy, Fe-Ni-Cr alloy strip, sheath heater, method of manufacturing Fe-Ni-Cr alloy, and method of manufacturing sheath heater

An austenitic Fe&#x2014;Ni&#x2014;Cr alloy comprises C: 0.005&#x2dc;0.03 mass %, Si: 0.17&#x2dc;1.0 mass %, Mn: not more than 2.0 mass %, P: not more than 0.030 mass %, S: not more than 0.0015 mass %, Cr: 18&#x2dc;28 mass %, Ni: 21.5&#x2dc;32 mass %, Mo: 0.10&#x2dc;2.8 mass %, Co: 0.05&#x2dc;2.0 mass %, Cu: less than 0.25 mass %, N: not more than 0.018 mass %, Al: 0.10&#x2dc;1.0 mass %, Ti: 0.10&#x2dc;1.0 mass %, Zr: 0.01&#x2dc;0.5 mass %, and the balance being Fe and inevitable impurities; wherein Cr, Mo, N and Cu satisfy PRE=Cr+3.3&#xd7;Mo+16&#xd7;N&#x2267;20.0 and PREH=411-13.2&#xd7;Cr-5.8&#xd7;Mo+0.1&#xd7;Mo+1.2&#xd7;Cu&#x2266;145.0 and wherein Al, Ti, and Zr satisfy 0.5&#x2266;Al+Ti+1.5&#xd7;Zr&#x2266;1.5, and has an excellent corrosion resistance in air or under a wet environment even at a surface state having an oxide film formed by an intermediate heat treatment.

Austenitic Fe&#x2014;Ni&#x2014;Cr alloy

High-Mn austenitic stainless steels having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.0028 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass % with the balance being Fe and inevitable impurities, provided that these components are contained so that &#x3b4; cal represented by the following equation is not more than 5.5%: &#x3b4; cal (mass %)=(Cr+0.48Si)&#x2212;(Ni+0.11Mn&#x2212;0.0101Mn+26.4C+20.1N)&#x2212;4.7, wherein each element symbol in the equation is a content of the respective element (mass %), and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.

High-Mn austenitic stainless steel and a producing method of high-Mn austenitic stainless steel sheet

As a stainless steel for a metal part for clothing ornament capable of working into a complicated form part and having such nonmagnetic properties that the worked part can cope with the detection through needle detecting device is provided a high-Mn austenitic stainless steel having a chemical composition comprising C: 0.02-0.12 mass %, Si: 0.05-1.5 mass %, Mn: 10.0-22.0 mass %, S: not more than 0.03 mass %, Ni: 4.0-12.0 mass %, Cr: 14.0-25.0 mass % and N: 0.07-0.17 mass %, provided that these components are contained so that &#x3b4; cal (mass %) represented by the following equation (1) is not more than 5.5 mass %:&#x3b4; cal (mass %)=(Cr+0.48Si+1.21Mo+2.2(V+Ti)+0.15Nb)&#x2212;(Ni+0.47Cu+0.11Mn&#x2212;0.0101Mn+26.4C+20.1N)&#x2212;4.7&#x2003;&#x2003;(1)and having a magnetic permeability of not more than 1.003 under a magnetic field of 200 kA/m.

Clothing ornament made from a high-Mn austenitic stainless steel

A holding toolfor use in producing of laminated glass includes a frame, a bag memberand a supporting memberfor suspending the bag memberfrom the frame. The bag memberis made of a film with flexibility and airtightness, is provided with a sealable opening and has evacuating portsandin the vicinity of an periphery of a flat shape thereof having the periphery sealed. The framehas a first frame memberand a second frame memberopposing each other and disposed outside the periphery of the bag member, and the bag memberis suspended by the supporting membermovably against the frameon a holding face formed at least by the first frame memberand the second frame memberinside an area formed by connecting ends of these frame members.

Bag member for compression prebonding, holding tool for producing laminated glass, and device of producing laminated glass and method of producing the same

The present invention aims at providing a sophisticated segregation reducing technique which a conventional technique cannot achieve by finding the relationship between the casting structure and the segregation of components at the time of solidification and the heat treatment conditions. That is, the present invention aims at providing material for shadow masks which exhibits excellent quality with respect to streaks. A material for a shadow mask of the present invention is formed of a casting slab for preparing the shadow mask which comprises an Ni&mdash;Fe alloy containing 30 to 45% of Ni. The casting slab has a cast structure comprising a columnar crystal and/or a chill crystal in an amount of 99% or more. In particular, it is preferred that the casting slab contains no equiaxed crystal. To this end, such casting slab is prepared by a continuous casting method in which casting operation is carried out with no electromagnetic stirring and with maintaining a melt temperature of the non-solidificated part in the slab at a temperature equal to or more than the liquidus thereof. Further, the resultant slab is subjected to a heat treatment at a temperature for a time such that the K value becomes 150 &mgr;m or more, to thereby diffuse the segregation of Ni.

Growing community of inventors

Kanagawa, Japan

Shigeru Hirata