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1. 发明授权

US06458318B1 Heat resistant nickel base alloy 有权
标题翻译：耐热镍基合金
公开(公告)号：US06458318B1
公开(公告)日：2002-10-01
申请号：US09606151
申请日：2000-06-29
申请人： Yoshitaka Nishiyama , Toshiro Anraku , Yoshiatsu Sawaragi , Kazuhiro Ogawa , Hirokazu Okada
发明人： Yoshitaka Nishiyama , Toshiro Anraku , Yoshiatsu Sawaragi , Kazuhiro Ogawa , Hirokazu Okada
IPC分类号： C22C1905
CPC分类号： C22C19/055 , C22C19/056
摘要： A heat resistant Ni base alloy comprises, on a mass% basis, 0.1% or less C, 2% or less Si, 2% or less Mn, 0.005% or less S, 10 to 25% Cr, 2.1 to less than 4.5% Al, 0.08% or less N, 0.001 to 1% in total of one or more elements of B: 0.03% or less, Zr: 0.2% or less and Hf: 0.8% or less, and 2.5 to 15% in total of one or more elements of Mo: 0.01 to 15% and W: 0.01 to 9%. The alloy is suitable as a material for a pipe used in ethylene cracking furnace.
摘要翻译：耐热Ni基合金以质量％计含有0.1％以下的C，2％以下的Si，2％以下的Mn，0.005％以下的S，10〜25％的Cr，2.1以上且小于4.5％ Al，0.08％以下N，B：0.03％以下的一种以上的元素的总计为0.001〜1％，Zr：0.2％以下，Hf：0.8％以下，总计2.5〜15％或更多的Mo元素：0.01〜15％，W：0.01〜9％。该合金适用于乙烯裂解炉用管材料。

2. 发明授权

US06702906B2 Ni-base heat resistant alloy and welded joint thereof 有权
标题翻译：镍基耐热合金及其焊接接头
公开(公告)号：US06702906B2
公开(公告)日：2004-03-09
申请号：US10192607
申请日：2002-07-11
申请人： Kazuhiro Ogawa , Kazuyuki Kitamura , Hirokazu Okada , Yoshitaka Nishiyama
发明人： Kazuhiro Ogawa , Kazuyuki Kitamura , Hirokazu Okada , Yoshitaka Nishiyama
IPC分类号： C22C1905
CPC分类号： C22C19/056 , B23K35/304 , C22C19/055
摘要： A Ni-base heat resistant alloy excellent in weldability and strength at elevated temperatures and suited for use in manufacturing cracking furnace tubes and reformer furnace tubes to be used in ethylene plants as well as a welded joint therefor is provided. The alloy of the invention is a Ni-base heat-resistant alloy, which comprises C: not more than 0.1%, Si: not more than 2%, Mn: not more than 2%, P: not more than 0.025%, S: not more than 0.005%, N: not more than 0.04%, Cr: 10 to 30%, Al: 2.1 to less than 4.5%, and Mo: 2.5 to 15% or W: 2.5 to 9% or Mo and W: 2.5 to 15% in total, and satisfies the relation (1) given below: (104Si+1980P+1980S+9Al+15Ti+11Nb+1.8W+11600B)≦{1.1(240−20000S−1900P−30Al−10Ti−9W+17000B) (1) In the welded joint of the invention, both of the base metal and weld metal are made of the alloy having the above composition, and the ST value of the weld metal as calculated according to the following formula (2) or (3) is larger by not less than 3 than the ST value of the base metal: in the case of Ti≦4C; ST=Mo+1.5W+100Ti (2) in the case of Ti>4C; ST=Mo+1.5W+400C (3).
摘要翻译：提供了一种耐高温焊接性和强度优异的镍基耐热合金，适用于制造用于乙烯装置的裂解炉管和重整炉管以及其焊接接头。本发明的合金是Ni基耐热合金，其包含C：不大于0.1％，Si：不大于2％，Mn：不大于2％，P：不大于0.025％，S ：不大于0.005％，N：不大于0.04％，Cr：10〜30％，Al：2.1〜小于4.5％，Mo：2.5〜15％或W：2.5〜9％或Mo和W： 2.5〜15％，满足下述关系式（1）：在本发明的焊接接头中，基体金属和焊接金属均由具有上述成分的合金构成，焊接的ST值根据下式（2）或（3）计算的金属比贱金属的ST值大3以上：

3. 发明授权

US10233523B2 Carburization resistant metal material 有权
公开(公告)号：US10233523B2
公开(公告)日：2019-03-19
申请号：US14129137
申请日：2012-05-29
申请人： Yoshitaka Nishiyama , Hirokazu Okada , Takahiro Osuki , Etsuo Dan
发明人： Yoshitaka Nishiyama , Hirokazu Okada , Takahiro Osuki , Etsuo Dan
IPC分类号： C22C38/02 , C22C38/42 , C22C38/58 , C22C30/02 , C22C38/00 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C21D6/00 , C22C38/34 , C22C38/46 , F28F21/08
摘要： There is provided a carburization resistant metal material suitable as a raw material for cracking furnaces, reforming furnaces, heating furnaces, heat exchangers, etc. in petroleum and gas refining, chemical plants, and the like. This metal material consists of, by mass %, C: 0.03 to 0.075%, Si: 0.6 to 2.0%, Mn: 0.05 to 2.5%, P: 0.04% or less, S: 0.015% or less, Cr: higher than 16.0% and less than 20.0%, Ni: 20.0% or higher and less than 30.0%, Cu: 0.5 to 10.0%, Al: 0.15% or less, Ti: 0.15% or less, N: 0.005 to 0.20%, and O (oxygen): 0.02% or less, the balance being Fe and impurities. The metal material may further contain one kind or more kinds of Co, Mo, W, Ta, B, V, Zr, Nb, Hf, Mg, Ca, Y, La, Ce and Nd.

4. 发明授权

US07951469B2 Welding material and welded joint structure 有权
标题翻译：焊接材料和焊接接头结构
公开(公告)号：US07951469B2
公开(公告)日：2011-05-31
申请号：US12691859
申请日：2010-01-22
申请人： Takahiro Osuki , Kazuhiro Ogawa , Hirokazu Okada
发明人： Takahiro Osuki , Kazuhiro Ogawa , Hirokazu Okada
IPC分类号： B32B15/18 , C22C38/56
CPC分类号： C22C19/05 , B23K35/004 , B23K35/0261 , B23K35/30 , B23K35/304 , B23K35/3066 , B23K35/3086 , B23K35/40 , C21D8/065 , C21D9/525 , C21D2211/001 , C22C19/058 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/48 , C22C38/50 , Y10T428/12111 , Y10T428/12222 , Y10T428/12493 , Y10T428/12847 , Y10T428/12937 , Y10T428/12944 , Y10T428/12951 , Y10T428/12958 , Y10T428/12965 , Y10T428/12979
摘要： A welding material, to be used for welding a base metal made of an austenitic alloy comprising C≦2.0%, Si≦4.0%, Mn: 0.01 to 3.0%, P: more than 0.03% to not more 0.3%, S≦0.03%, Cr: 12 to 35%, Ni: 6 to 80%, sol. Al: 0.001 to 1% and N≦0.3%, with the balance being Fe and impurities to a base metal made of another austenitic alloy, which comprises C: more than 0.3% to 3.0%, Si≦4.0%, Mn≦3.0%, P≦0.03%, S≦0.03%, Cr: more than 22% to 55%, Ni: more than 30% to not more than 70%, sol. Al: 0.001 to 1% and N≦0.3%, with the balance being Fe and impurities can suppress the weld solidification cracking which occurs in an austenitic alloy having a high P content and showing fully austenitic solidification. Therefore, the said welding material can be widely used in such fields where a welding fabrication is required. The said welding material may contain a specific amount or amounts of one or more elements selected from Cu, Mo, W, V, Nb, Ti, Ta, Zr, Hf, Co, B, Ca, Mg and REM.
摘要翻译：一种焊接材料，用于焊接由奥氏体合金制成的贱金属，其包含2.0％，Si＆NlE; 4.0％，Mn：0.01至3.0％，P：大于0.03％至不大于0.3％的S＆NlE; 0.03 ％，Cr：12〜35％，Ni：6〜80％，sol。 Al：0.001〜1％，N＆lt; ll; 0.3％，余量为Fe和杂质，由另一种奥氏体合金制成的贱金属，其中C：大于0.3％至3.0％，Si＆NlE; 4.0％，Mn＆NlE; 3.0％，P＆lt; L，0.03％，S＆N，E，0.03％，Cr：大于22％至55％，Ni：大于30％至不大于70％ Al：0.001〜1％，N＆lt; ll; 0.3％，余量为Fe和杂质可以抑制在具有高P含量的奥氏体合金中发生的完全奥氏体凝固的焊接凝固裂纹。因此，所述焊接材料可以广泛地用于需要焊接加工的领域。所述焊接材料可以含有一定量或数量的选自Cu，Mo，W，V，Nb，Ti，Ta，Zr，Hf，Co，B，Ca，Mg和REM中的一种或多种元素。

5. 发明申请

US20140017111A1 HIGH-STRENGTH AUSTENITIC STAINLESS STEEL FOR HIGH-PRESSURE HYDROGEN GAS 审中-公开
标题翻译：用于高压氢气的高强度奥氏体不锈钢
公开(公告)号：US20140017111A1
公开(公告)日：2014-01-16
申请号：US14007992
申请日：2012-03-19
申请人： Tomohiko Omura , Jun Nakamura , Hirokazu Okada , Hiroyuki Semba , Yusabu Tomio , Hiroyuki Hirata , Masaaki Igarashi , Kazuhiro Ogawa , Masaaki Terunuma
发明人： Tomohiko Omura , Jun Nakamura , Hirokazu Okada , Hiroyuki Semba , Yusabu Tomio , Hiroyuki Hirata , Masaaki Igarashi , Kazuhiro Ogawa , Masaaki Terunuma
IPC分类号： C22C38/58 , C22C38/52 , C22C38/50 , C22C38/00 , C22C38/44 , C22C38/42 , C22C38/02 , C22C38/54 , C22C38/48
CPC分类号： C21D9/46 , C21D1/26 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D2211/001 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , F16L9/02
摘要： There is provided an austenitic stainless steel for high-pressure hydrogen gas consisting, by mass percent, of C: 0.10% or less, Si: 1.0% or less, Mn: 3% or more to less than 7%, Cr: 15 to 30%, Ni: 10% or more to less than 17%, Al: 0.10% or less, N: 0.10 to 0.50%, and at least one kind of V: 0.01 to 1.0% and Nb: 0.01 to 0.50%, the balance being Fe and impurities, wherein in the impurities, the P content is 0.050% or less and the S content is 0.050% or less, the tensile strength is 800 MPa or higher, the grain size number (ASTM E112) is No. 8 or higher, and alloy carbo-nitrides having a maximum diameter of 50 to 1000 nm are contained in the number of 0.4/μm2 or larger in cross section observation.
摘要翻译：提供了一种用于高压氢气的奥氏体不锈钢，其质量百分比为C：0.10％以下，Si：1.0％以下，Mn：3％以上至小于7％，Cr：15〜 30％，Ni：10％以上至小于17％，Al：0.10％以下，N：0.10〜0.50％，V：0.01〜1.0％，Nb：0.01〜0.50％中的至少一种，余量为Fe和杂质，其中在杂质中，P含量为0.050％以下，S含量为0.050％以下，拉伸强度为800MPa以上，粒径数（ASTM E112）为8 以上，截面观察中最大直径为50〜1000nm的合金碳氮化物的含量为0.4 / m 2以上。

6. 发明授权

US08137613B2 Austenitic stainless steel welded joint and austenitic stainless steel welding material 有权
标题翻译：奥氏体不锈钢焊接接头和奥氏体不锈钢焊接材料
公开(公告)号：US08137613B2
公开(公告)日：2012-03-20
申请号：US12458507
申请日：2009-07-14
申请人： Takahiro Osuki , Kazuhiro Ogawa , Hirokazu Okada , Masaaki Igarashi
发明人： Takahiro Osuki , Kazuhiro Ogawa , Hirokazu Okada , Masaaki Igarashi
IPC分类号： C22C38/40 , C22C38/44 , C22C38/50 , C22C38/42 , C22C19/03 , C22C30/00
CPC分类号： B23K35/3053 , C22C38/005 , C22C38/04 , C22C38/06 , C22C38/40 , Y10T428/12944 , Y10T428/12965 , Y10T428/12979
摘要： An austenitic stainless steel welded joint, whose base metal and weld metal each comprises, by mass percent, C: not more than 0.3%, Si: not more than 2%, Mn: 0.01 to 3.0%, P: more than 0.04% to not more than 0.3%, S: not more than 0.03%, Cr: 12 to 30%, Ni: 6 to 55%, rare earth metal(s): more than 0.2% to not more than 0.6%, sol. Al: 0.001 to 3% and N: not more than 0.3%, with the balance being Fe and impurities, and satisfies the formula of (Cr+1.5×Si+2×P)/(Ni+0.31×Mn+22×C+14.2×N+5×P)
摘要翻译：一种奥氏体不锈钢焊接接头，其基体金属和焊接金属以质量％计含有C：0.3％以下，Si：2％以下，Mn：0.01〜3.0％，P：0.04％以上不大于0.3％，S：0.03％以下，Cr：12〜30％，Ni：6〜55％，稀土金属：0.2％以上0.6％以下。 Al：0.001〜3％，N：0.3以下，余量为Fe和杂质，满足式（Cr + 1.5×Si + 2×P）/（Ni + 0.31×Mn + 22×C + 14.2×N + 5×P）<1.388，尽管具有高P含量并显示完全奥氏体凝固，但具有优异的耐焊接凝固裂纹性。因此，所述奥氏体不锈钢焊接接头可广泛用于需要焊接加工的领域。上述公式中的每个元素符号表示相关元素的质量百分比含量。

7. 发明申请

US20100136361A1 WELDING MATERIAL AND WELDED JOINT STRUCTURE 有权
标题翻译：焊接材料和焊接接头结构
公开(公告)号：US20100136361A1
公开(公告)日：2010-06-03
申请号：US12691859
申请日：2010-01-22
申请人： Takahiro Osuki , Kazuhiro Ogawa , Hirokazu Okada
发明人： Takahiro Osuki , Kazuhiro Ogawa , Hirokazu Okada
IPC分类号： B23K35/02 , B32B15/01 , B23K35/22
CPC分类号： C22C19/05 , B23K35/004 , B23K35/0261 , B23K35/30 , B23K35/304 , B23K35/3066 , B23K35/3086 , B23K35/40 , C21D8/065 , C21D9/525 , C21D2211/001 , C22C19/058 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/48 , C22C38/50 , Y10T428/12111 , Y10T428/12222 , Y10T428/12493 , Y10T428/12847 , Y10T428/12937 , Y10T428/12944 , Y10T428/12951 , Y10T428/12958 , Y10T428/12965 , Y10T428/12979
摘要： A welding material, to be used for welding a base metal made of an austenitic alloy comprising C≦2.0%, Si≦4.0%, Mn: 0.01 to 3.0%, P: more than 0.03% to not more 0.3%, S≦0.03%, Cr: 12 to 35%, Ni: 6 to 80%, sol. Al: 0.001 to 1% and N≦0.3%, with the balance being Fe and impurities to a base metal made of another austenitic alloy, which comprises C: more than 0.3% to 3.0%, Si≦4.0%, Mn≦3.0%, P≦0.03%, S≦0.03%, Cr: more than 22% to 55%, Ni: more than 30% to not more than 70%, sol. Al: 0.001 to 1% and N≦0.3%, with the balance being Fe and impurities can suppress the weld solidification cracking which occurs in an austenitic alloy having a high P content and showing fully austenitic solidification. Therefore, the said welding material can be widely used in such fields where a welding fabrication is required. The said welding material may contain a specific amount or amounts of one or more elements selected from Cu, Mo, W, V, Nb, Ti, Ta, Zr, Hf, Co, B, Ca, Mg and REM.
摘要翻译：一种焊接材料，用于焊接由奥氏体合金制成的贱金属，其包含2.0％，Si＆NlE; 4.0％，Mn：0.01至3.0％，P：大于0.03％至不大于0.3％的S＆NlE; 0.03 ％，Cr：12〜35％，Ni：6〜80％，sol。 Al：0.001〜1％，N＆lt; ll; 0.3％，余量为Fe和杂质，由另一种奥氏体合金制成的贱金属，其中C：大于0.3％至3.0％，Si＆NlE; 4.0％，Mn＆NlE; 3.0％，P＆lt; L，0.03％，S＆N，E，0.03％，Cr：大于22％至55％，Ni：大于30％至不大于70％ Al：0.001〜1％，N＆lt; ll; 0.3％，余量为Fe和杂质可以抑制在具有高P含量的奥氏体合金中发生的完全奥氏体凝固的焊接凝固裂纹。因此，所述焊接材料可以广泛地用于需要焊接加工的领域。所述焊接材料可以含有一定量或数量的选自Cu，Mo，W，V，Nb，Ti，Ta，Zr，Hf，Co，B，Ca，Mg和REM中的一种或多种元素。

8. 发明申请

US20100034689A1 AUSTENITIC STAINLESS STEEL 审中-公开
标题翻译：奥氏体不锈钢
公开(公告)号：US20100034689A1
公开(公告)日：2010-02-11
申请号：US12539026
申请日：2009-08-11
申请人： Hiroyuki Hirata , Kazuhiro Ogawa , Takahiro Osuki , Hirokazu Okada , Hiroyuki Semba
发明人： Hiroyuki Hirata , Kazuhiro Ogawa , Takahiro Osuki , Hirokazu Okada , Hiroyuki Semba
IPC分类号： C22C38/60 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
CPC分类号： C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54
摘要： An austenitic stainless steel, which comprises by mass %, C: 0.04 to 0.18%, Si≦1.5%, Mn≦2.0%, Ni: 6 to 30%, Cr: 15 to 30%, N: 0.03 to 0.35%, sol. Al≦0.03% and further contains one or more elements selected from Nb≦1.0%, V≦0.5% and Ti≦0.5%, with the balance being Fe and impurities, and among the impurities P≦0.04%, S≦0.03%, Sn≦0.1%, As≦0.01%, Zn≦0.01%, Pb≦0.01% and Sb≦0.01%, and satisfy the conditions P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5}≦0.06 and 0.2≦P2=Nb+2(V+Ti)≦1.7−10×P1 has high strength and excellent resistance to cracking due to grain boundary embrittlement in the welded portion during the use at high temperatures. Therefore, the said steel can be suitably used as materials for constructing machines and equipment, such as power plant boilers, which are to be used at high temperatures for a long period of time.
摘要翻译：奥氏体系不锈钢以质量％计含有C：0.04〜0.18％，Si≤1.5％，Mn≤2.0％，Ni：6〜30％，Cr：15〜30％，N：0.03〜0.35％，溶胶 Al≤0.03％，进一步含有选自Nb <= 1.0％，V <= 0.5％和Ti <= 0.5％的一种或多种元素，余量为Fe和杂质，杂质P <= 0.04％ S <= 0.03％，Sn <= 0.1％，As <= 0.01％，Zn <= 0.01％，Pb <= 0.01％，Sb <= 0.01％，满足条件P1 = S + {（P + Sn）/ 2} + {（As + Zn + Pb + Sb）/ 5} <= 0.06和0.2 <= P2 = Nb + 2（V + Ti）<= 1.7-10xP1具有高强度和优异的耐晶界破裂性在高温使用期间焊接部分的脆化。因此，所述钢可以适合用作长时间在高温下使用的电厂锅炉等机器设备的构成材料。

9. 发明授权

US08808473B2 Austenitic heat resistant alloy 有权
标题翻译：奥氏体耐热合金
公开(公告)号：US08808473B2
公开(公告)日：2014-08-19
申请号：US13472640
申请日：2012-05-16
申请人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
发明人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
IPC分类号： C22C19/05
CPC分类号： C22C19/055
摘要： An austenitic heat resistant alloy includes, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 10.14 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 0.05%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 1.36% or less, Ti: 3% or less, and Nb: 3% or less, and the balance being Fe and impurities. The contents of P and S in the impurities are P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, where an element in the Formulas represents the content by mass percent.
摘要翻译：奥氏体系耐热合金的质量百分比含有：C：0.15％以下，Si：2％以下，Mn：3％以下，Ni：40〜60％，Co：10.14〜25％，Cr：15％以上且小于28％，Mo：12％以下，W：小于0.05％，其总含量为0.1〜12％，Nd：0.001〜0.1％，B：0.0005〜0.006％，N：0.03％以下，O：0.03％以下，Al：1.36％以下，Ti：3％以下，Nb：3％以下中的至少一种，余量为Fe和杂质。杂质中P和S的含量为P：0.03％以下，S：0.01％以下。合金满足1＆nlE; 4×Al + 2×Ti + Nb＆nlE; 12和P + 0.2×Cr×B＆nlE; 0.035，式中的元素表示质量百分含量。

10. 发明申请

US20120288400A1 AUSTENITIC HEAT RESISTANT ALLOY 有权
标题翻译：奥氏体耐热合金
公开(公告)号：US20120288400A1
公开(公告)日：2012-11-15
申请号：US13472640
申请日：2012-05-16
申请人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
发明人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
IPC分类号： C22C19/05
CPC分类号： C22C19/055
摘要： An austenitic heat resistant alloy consisting of, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 0.03 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 4%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 3% or less, Ti: 3% or less, and Nb: 3% or less, the balance being Fe and impurities. The contents of P and S in the impurities being P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, is excellent in weld crack resistance and toughness of HAZ, and is further excellent in creep strength at high temperatures.
摘要翻译：一种奥氏体系耐热合金，以质量％计含有C：0.15％以下，Si：2％以下，Mn：3％以下，Ni：40〜60％，Co：0.03〜25％，Cr：15 ％以上且小于28％，Mo：12％以下，W：小于4％，其总含量为0.1〜12％，Nd：0.001〜0.1％，B：0.0005〜0.006 ％，N：0.03％以下，O：0.03％以下，选自Al：3％以下，Ti：3％以下，Nb：3％以下，余量为Fe和杂质中的至少一种。杂质中P和S的含量为：0.03％以下，S：0.01％以下。合金满足1＆nlE; 4×Al + 2×Ti + Nb＆nlE; 12和P + 0.2×Cr×B＆nlE; 0.035，HAZ的耐熔融裂纹性和韧性优异，并且在高温下的蠕变强度更优异。

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