RU2002111392A

RU2002111392A - STEEL FERRITE CORROSION RESISTANT

Info

Publication number: RU2002111392A
Application number: RU2002111392/02A
Authority: RU
Inventors: Ирина Игоревна Реформатска; Ирина Игоревна Реформатская; Ирина Ивановна Ащеулова; Юрий Яковлевич Томашпольский; Александр Николаевич Рыбкин; Ирина Гавриловна Родионова; Наталь Александровна Сорокина; Наталья Александровна Сорокина; мнев Анатолий Петрович Шл; Анатолий Петрович Шлямнев; Ольга Николаевна Бакланова; Анатолий Андрианович Быков; Энар Тихонович Шаповалов; Марина Евгеньевна Ковалевска; Марина Евгеньевна Ковалевская
Original assignee: Закрытое акционерное общество "Институт биметаллических сплавов"; ФГУП НИФХИ им. Л.Я. Карпова
Priority date: 2002-04-29
Filing date: 2002-04-29
Publication date: 2004-01-20
Also published as: RU2222633C2

Claims

1. Steel ferritic corrosion-resistant, containing carbon, chromium, silicon, iron and inevitable impurities, including sulfur and phosphorus, characterized in that it additionally contains manganese in the following ratio of components, wt.%:

Carbon 0.01-0.05

Manganese 0.20-0.80

Silicon 0.5-2.5

Chrome 11-15

Sulfur Not more than 0.007

Phosphorus Not more than 0,035

Iron and inevitable impurities

while the content of chromium, silicon and carbon meets the condition

[Cr] +4 [Si] -20 [C] = 17-20 wt.%,

where [Cr], [Si] and [C] is the content of chromium, silicon and carbon, respectively, wt.%.

2. Steel according to claim 1, characterized in that it further comprises molybdenum in an amount of 0.5-2.5 wt.%.

3. Steel according to claim 1 or 2, characterized in that it additionally contains niobium in an amount determined from the condition

8 [C] ≤ [Nb] ≤1.5 wt.%,

where [C] and [Nb] are the carbon and niobium contents, respectively, wt.%.

4. Steel according to claim 1 or 2, characterized in that it further comprises titanium in an amount determined from the condition

4 [C] ≤ [Ti] ≤1.0 wt.%,

where [C] and [Ti] are the carbon and titanium contents, respectively, wt.%.