JP2018009214A5 - - Google Patents

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JP2018009214A5
JP2018009214A5 JP2016138416A JP2016138416A JP2018009214A5 JP 2018009214 A5 JP2018009214 A5 JP 2018009214A5 JP 2016138416 A JP2016138416 A JP 2016138416A JP 2016138416 A JP2016138416 A JP 2016138416A JP 2018009214 A5 JP2018009214 A5 JP 2018009214A5
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JP6725191B2 (en
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上記の課題を解決するための手段では、開発鋼１の手段は、質量％で、Ｃ：０．４０〜０．８５％、Ｓｉ：０．５０〜２．００％、Ｍｎ：０．１０〜２．００％、Ｐ：≦０．０３０％、Ｎｉ：０．１０〜２．００％、Ｃｒ：１６．００〜２３．５０％、Ｏ：≦０．００８０％、Ｎ：≦０．０６００％を有し、およびＦｅ並びに不可避不純物を有し、シャルピー衝撃値による靱性：５．０Ｊ／ｃｍ2 以上、粒界被覆率指数Ｗ値の１６．３［％Ｃ］＋１５．４×［％Ｎｉ］＋３．３×［％Ｃｒ］：≦１０４であることを特徴とするＮｉ含有高Ｃマルテンサイト系耐熱鋼である。 In the means for solving the above problems, the means of the developed steel 1 is, by mass%, C: 0.40 to 0.85%, Si: 0.50 to 2.00%, Mn: 0.10 to 2.00%, P: ≦ 0.030%, Ni: 0.10 to 2.00%, Cr: 16.00 to 23.50%, O: ≦ 0.0080%, N: ≦ 0.0600% And Fe and inevitable impurities, and toughness by Charpy impact value: 5.0 J / cm 2 or more , grain boundary coverage index W value 16.3 [% C] +1 5.4 x [% Ni] Ni-containing high-C martensitic heat-resistant steel characterized in that + 3.3 × [% Cr]: ≦ 104.

開発鋼２の手段は、質量％で、Ｃ：０．４０〜０．８５％、Ｓｉ：０．５０〜２．００％、Ｍｎ：０．１０〜２．００％、Ｐ：≦０．０３０％、Ｎｉ：０．１０〜２．００％、Ｃｒ：１６．００〜２３．５０％、Ｏ：≦０．００８０％、Ｎ：≦０．０６００％を有し、さらに、Ｍｏ：≦１．００％、Ｔｉ：≦０．２０％、Ｖ：≦０．３０％、Ｎｂ≦０．５０％、Ｗ：≦１．００％、Ｂ：≦０．０２００％のいずれか１種または２種以上を含有し、さらにＦｅおよび不可避不純物を有し、シャルピー衝撃値による靱性：５．０Ｊ／ｃｍ2 以上、粒界被覆率指数Ｗ値の１６．３［％Ｃ］＋１５．４×［％Ｎｉ］＋３．３×［％Ｃｒ］：≦１０４、さらにＡ値の［％Ｍｏ］＋１／２×［％Ｗ］：≦１．０、およびＢ値の５×［％Ｔｉ］＋２×［％Ｎｂ］：≦１．５であることを特徴とする開発鋼１の手段のＮｉ含有高Ｃマルテンサイト系耐熱鋼である。 The means of the developed steel 2 is, by mass%, C: 0.40 to 0.85%, Si: 0.50 to 2.00%, Mn: 0.10 to 2.00%, P: ≦ 0.030 %, Ni: 0.10 to 2.00%, Cr: 16.00 to 23.50%, O: ≦ 0.0080%, N: ≦ 0.0600%, and further, Mo: ≦ 1. 00%, Ti: ≦ 0.20%, V: ≦ 0.30%, Nb ≦ 0.50%, W: ≦ 1.00%, B: ≦ 0.0200% Any one or more of them And further contains Fe and unavoidable impurities, toughness by Charpy impact value: 5.0 J / cm 2 or more , grain boundary coverage index W value 16.3 [% C] +1 5.4 x [% Ni] + 3.3 × [% Cr]: ≦ 104, and further, A value [% Mo] + 1⁄2 × [% W]: ≦ 1.0, and B value 5 × [% Ti] + 2 × [% Nb] A Ni-containing high C martensitic heat resisting steel means developed steel 1, characterized in that ≦ 1.5.

開発鋼３の手段は、質量％で、Ｃ：０．４０〜０．８５％、Ｓｉ：０．５０〜２．００％、Ｍｎ：０．１０〜２．００％、Ｐ：≦０．０３０％、Ｎｉ：０．１０〜２．００％、Ｃｒ：１６．００〜２３．５０％、Ｏ：≦０．００８０％、Ｎ：≦０．０６００％を有し、さらに、Ｍｏ：≦１．００％、Ｔｉ：≦０．２０％、Ｖ：≦０．３０％、Ｎｂ≦０．５０％、Ｗ：≦１．００％、Ｂ：≦０．０２００％のいずれか１種または２種以上を含有し、さらに、Ｓ：０より大きく０．１５０％以下であり、さらにＦｅおよび不可避不純物を有し、シャルピー衝撃値による靱性：５．０Ｊ／ｃｍ2 以上、粒界被覆率指数Ｗ値の１６．３［％Ｃ］＋１５．４×［％Ｎｉ］＋３．３×［％Ｃｒ］：≦１０４、さらにＡ値の［％Ｍｏ］＋１／２×［％Ｗ］：≦１．０、およびＢ値の５×［％Ｔｉ］＋２×［％Ｎｂ］：≦１．５であることを特徴とする開発鋼１または２の手段のＮｉ含有高Ｃマルテンサイト系耐熱鋼である。 The means of the developed steel 3 is, by mass%, C: 0.40 to 0.85%, Si: 0.50 to 2.00%, Mn: 0.10 to 2.00%, P: ≦ 0.030 %, Ni: 0.10 to 2.00%, Cr: 16.00 to 23.50%, O: ≦ 0.0080%, N: ≦ 0.0600%, and further, Mo: ≦ 1. 00%, Ti: ≦ 0.20%, V: ≦ 0.30%, Nb ≦ 0.50%, W: ≦ 1.00%, B: ≦ 0.0200% Any one or more of them And further contains Fe and unavoidable impurities, and toughness by Charpy impact value: 5.0 J / cm 2 or more , grain boundary coverage index W value 16.3 [% C] + 15.4 × [% Ni] + 3.3 × [% Cr]: ≦ 104, and further, A value [% Mo] + 1⁄2 × [% W]: ≦ Ni-containing high-C martensitic heat-resistant steel of means of developed steel 1 or 2 characterized in that .0, and 5 × [% Ti] + 2 × [% Nb] of B value: ≦ 1.5 .

Claims (3)

質量％で、Ｃ：０．４０〜０．８５％、Ｓｉ：０．５０〜２．００％、Ｍｎ：０．１０〜２．００％、Ｐ：≦０．０３０％、Ｎｉ：０．１０〜２．００％、Ｃｒ：１６．００〜２３．５０％、Ｏ：≦０．００８０％、Ｎ：≦０．０６００％を有し、およびＦｅ並びに不可避不純物を有し、シャルピー衝撃値による靱性：５．０Ｊ／ｃｍ2 以上、粒界被覆率指数Ｗ値の１６．３［％Ｃ］＋１５．４×［％Ｎｉ］＋３．３×［％Ｃｒ］：≦１０４であることを特徴とするＮｉ含有高Ｃマルテンサイト系耐熱鋼。 C: 0.40 to 0.85%, Si: 0.50 to 2.00%, Mn: 0.10 to 2.00%, P: ≦ 0.030%, Ni: 0.10 by mass% 2.00 2.00%, Cr: 16.00 to 23.50%, O: 0.00 0.0080%, N: 0.0 0.0600%, and having Fe and unavoidable impurities, toughness according to Charpy impact value It is characterized by being: 5.0 J / cm 2 or more , 16.3 [% C] of grain boundary coverage index W value, 15.4 × [% Ni] + 3.3 × [% Cr]: ≦ 104 Ni-containing high-C martensitic heat-resistant steel. 質量％で、Ｃ：０．４０〜０．８５％、Ｓｉ：０．５０〜２．００％、Ｍｎ：０．１０〜２．００％、Ｐ：≦０．０３０％、Ｎｉ：０．１０〜２．００％、Ｃｒ：１６．００〜２３．５０％、Ｏ：≦０．００８０％、Ｎ：≦０．０６００％を含有し、さらに、Ｍｏ：≦１．００％、Ｔｉ：≦０．２０％、Ｖ：≦０．３０％、Ｎｂ≦０．５０％、Ｗ：≦１．００％、Ｂ：≦０．０２００％のいずれか１種または２種以上を含有し、さらにＦｅおよび不可避不純物を有し、シャルピー衝撃値による靱性：５．０Ｊ／ｃｍ2 以上、粒界被覆率指数Ｗ値の１６．３［％Ｃ］＋１５．４×［％Ｎｉ］＋３．３×［％Ｃｒ］：≦１０４、さらにＡ値の［％Ｍｏ］＋１／２×［％Ｗ］：≦１．０、およびＢ値の５×［％Ｔｉ］＋２×［％Ｎｂ］：≦１．５であることを特徴とする請求項１に記載のＮｉ含有高Ｃマルテンサイト系耐熱鋼。 C: 0.40 to 0.85%, Si: 0.50 to 2.00%, Mn: 0.10 to 2.00%, P: ≦ 0.030%, Ni: 0.10 by mass% 2.00 2.00%, Cr: 16.00 to 23.50%, O: 0.00 0.0080%, N: 0.0 0.0600%, further, Mo:% 1.00%, Ti: 0 0 And 20%, V: ≦ 0.30%, Nb ≦ 0.50%, W: ≦ 1.00%, B: ≦ 0.0200% and any one or more of Fe and With inevitable impurities, toughness by Charpy impact value: 5.0 J / cm 2 or more , grain boundary coverage index W value 16.3 [% C] + 15.4 x [% Ni] + 3.3 x [% Cr ]: ≦ 104, furthermore, [% Mo] + 1⁄2 × [% W] of 値 value: ≦ 1.0, and 5 × [% Ti] + 2 × [% Nb] of B value: ≦ 1.5 Ni-containing high C martensitic heat resisting steel according to claim 1, wherein the door. 質量％で、Ｃ：０．４０〜０．８５％、Ｓｉ：０．５０〜２．００％、Ｍｎ：０．１０〜２．００％、Ｐ：≦０．０３０％、Ｎｉ：０．１０〜２．００％、Ｃｒ：１６．００〜２３．５０％、Ｏ：≦０．００８０％、Ｎ：≦０．０６００％を有し、さらに、Ｍｏ：≦１．００％、Ｔｉ：≦０．２０％、Ｖ：≦０．３０％、Ｎｂ≦０．５０％、Ｗ：≦１．００％、Ｂ：≦０．０２００％のいずれか１種または２種以上を含有し、さらに、Ｓ：０より大きく０．１５０％以下であり、さらにＦｅおよび不可避不純物を有し、シャルピー衝撃値による靱性：５．０Ｊ／ｃｍ2 以上、粒界被覆率指数Ｗ値の１６．３［％Ｃ］＋１５．４×［％Ｎｉ］＋３．３×［％Ｃｒ］：≦１０４、さらにＡ値の［％Ｍｏ］＋１／２×［％Ｗ］：≦１．０、およびＢ値の５×［％Ｔｉ］＋２×［％Ｎｂ］：≦１．５であることを特徴とする請求項１または２に記載のＮｉ含有高Ｃマルテンサイト系耐熱鋼。 C: 0.40 to 0.85%, Si: 0.50 to 2.00%, Mn: 0.10 to 2.00%, P: ≦ 0.030%, Ni: 0.10 by mass% 2.00%, Cr: 16.00 to 23.50%, O: ≦ 0.0080%, N: ≦ 0.0600%, and further, Mo: ≦ 1.00%, Ti: ≦ 0 And 20%, V: ≦ 0.30%, Nb ≦ 0.50%, W: ≦ 1.00%, B: ≦ 0.0200% and any one or more selected from the group consisting of S : Greater than 0: 0.150% or less, and further Fe and unavoidable impurities, toughness by Charpy impact value: 5.0 J / cm 2 or more , grain boundary coverage index W value 16.3 [% C] + 15.4 × [% Ni] + 3.3 × [% Cr]: ≦ 104, and further, [% Mo] + 1⁄2 × [% W] of A value: ≦ 1.0, and B value 5 × [% Ti] + 2 × [% Nb]: Ni-containing high C martensitic heat resisting steel according to claim 1 or 2, characterized in that a ≦ 1.5.
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