公开(公告)号：US4059440A

公开(公告)日：1977-11-22

申请号：US652703

申请日：1976-01-27

申请人： Susumu Takemura ,  Masao Onoyama ,  Masanobu Tsuji

发明人： Susumu Takemura ,  Masao Onoyama ,  Masanobu Tsuji

IPC分类号： C22C38/00 ,  C22C38/22 ,  C22C38/26 ,  C22C38/28

CPC分类号： C22C38/26 ,  C22C38/22 ,  C22C38/28

摘要： A highly corrosion resistant ferritic stainless steel comprising;C .ltoreq. 0.015%Si .ltoreq. 0.30%Mn .ltoreq. 0.30%P .ltoreq. 0.040%S .ltoreq. 0.030%Cr : 18.00 to 25.00%Ni .ltoreq. 0.20%Cu .ltoreq. 0.20%Mo : 1.50 - 3.50%N .ltoreq. 0.015%Ti : 4 .times. (C + N)% to 0.50%, andNb : 8 .times. (C + N)% to 1.00%, whereinTi/Nb : 0.5 to 1.2(Ti + Nb)/(C + N) .gtoreq. 8.0 in case of (C + N)

摘要翻译： 一种高耐蚀铁素体不锈钢，包括： C

公开(公告)号：US4463061A

公开(公告)日：1984-07-31

申请号：US502836

申请日：1983-06-09

申请人： Yasuo Otoguro ,  Mikio Yamanaka ,  Katukuni Hashimoto ,  Mizuo Sakakibara ,  Masao Onoyama

发明人： Yasuo Otoguro ,  Mikio Yamanaka ,  Katukuni Hashimoto ,  Mizuo Sakakibara ,  Masao Onoyama

IPC分类号： C22C30/00 ,  B32B15/01 ,  C22C38/00 ,  C22C38/50 ,  C22C38/58 ,  F22B37/04 ,  F28F21/08 ,  B32B27/06

CPC分类号： F28F21/082 ,  B32B15/011 ,  Y10T428/12354 ,  Y10T428/12931 ,  Y10T428/12965

摘要： A boiler tube having improved high temperature strength, improved high temperature corrosion resistance, and resistivity to embrittlement during the service thereof, comprising an outer surface layer and an inner part, the outer surface layer consisting essentially, by weight, of 0.03-0.20% carbon, 1.5-4.0% silicon, 0.1-3.0% manganese, 13-25% chromium, 13-40% nickel, 0.5-3.0% at least one kind selected from the group consisting of molybdenum and tungsten, 0.05-0.5% at least one kind selected from the group consisting of titanium, niobium and vanadium, and the balance iron and inevitable impurities, the inner part consisting essentially, by weight, of 0.03-0.20% carbon, 0.3-1.0% silicon, 0.1-3.0% manganese, 13-25% chromium, 13-40% nickel, 0.5-3.0% at least one kind selected from the group consisting of molybdenum and tungsten, 0.05-0.5% at least one kind selected from the group consisting of titanium, niobium and vanadium, and the balance iron and inevitable impurities. Boron of 0.001-0.01% may be further added to the alloy to improve creep strength while keeping improved high temperature corrosion resistance.

摘要翻译： 一种具有改善的高温强度，改善的耐高温腐蚀性以及在其使用期间脆化的电阻率的锅炉管，包括外表面层和内部部分，所述外表面层基本上由0.03-0.20％碳组成 ，1.5-4.0％硅，0.1-3.0％锰，13-25％铬，13-40％镍，0.5-3.0％选自钼和钨的至少一种，0.05-0.5％的至少一种 选自钛，铌和钒组成的组，余量为铁和不可避免的杂质，其内部基本上由0.03-0.20％的碳，0.3-1.0％的硅，0.1-3.0的锰，13 -25％铬，13-40％镍，0.5-3.0％选自钼和钨的至少一种，0.05-0.5％选自钛，铌和钒中的至少一种，以及 余铁和不可避免的杂质。 可以进一步向合金中添加0.001-0.01％的硼以提高蠕变强度，同时保持改善的耐高温腐蚀性。