DUPLEX STAINLESS STEEL WHICH HAS IMPROVED PROPERTIES IN THE FIELD OF MECHANICAL RESISTANCE AND CORROSION RESISTANCE.
Номер патента: ES2089456T3
Опубликовано: 01-10-1996
Автор(ы): Hiroshi Okamoto
Принадлежит: Sumitomo Metal Industries Ltd
Опубликовано: 01-10-1996
Автор(ы): Hiroshi Okamoto
Принадлежит: Sumitomo Metal Industries Ltd
Реферат: UN ACERO INOXIDABLE DOBLE POSEE UNA COMPOSICION QUIMICA QUE CONSISTE BASICAMENTE, EN BASE AL PESO, DE:C:0,03% O MENOR, SI:1,0% O MENOR, MN:1,5% O MENOR, P:0,040% O MENOR, S:0,008% O MENOR, SOL.AL:0,040% O MENOR, NI:5,0-9,0%, CR:23,0-27,0%, MO:2,04,0%, N:0,24-0,32%, W:MAS DE 1,5% Y COMO MAXIMO 1,5%, OPCIONALMENTE AL MENOS UN ELEMENTO SELECCIONADO DEL GRUPO CONSISTENTE EN CU:0,2-2,0% Y V:0,05-1,5% Y/O EL GRUPO CONSISTENTE EN CA:0,02% O MENOR, MG: 0,02% O MENOR, B:0,02% O MENOR, Y UNO O MAS METALES DE TIERRAS RARAS:0,2% O MENOR EN TOTAL,Y UN SALDO DE FE E IMPUREZAS ACCIDENTALES. LA COMPOSICION QUIMICA TIENE UN VALOR DE AL MENOS 40 PARA PREW DEFINIDO POR LA SIGUIENTE FORMULA (A): PREW=CR+3,3 (MO+0,5 W+16N) DONDE EL PORCENTAJE DE CADA ELEMENTO ES EN PESO. EL ACERO MUESTRA A DOUBLE STAINLESS STEEL HAS A CHEMICAL COMPOSITION THAT CONSISTS BASICALLY, BASED ON WEIGHT, OF: C: 0.03% OR LESS, IF: 1.0% OR LESS, MN: 1.5% OR LESS, P: 0.040% OR LESS, S: 0.008% OR LESS, SOL.AL:0.040% OR LESS, NI: 5.0-9.0%, CR: 23.0-27.0%, MO: 2.04.0%, N: 0.24-0.32%, W: MORE THAN 1.5% AND AT MAXIMUM 1.5%, OPTIONALLY AT LEAST ONE SELECTED ELEMENT OF THE GROUP CONSISTING OF CU: 0.2-2.0% YV: 0 , 05-1.5% AND / OR THE CONSISTENT GROUP IN CA: 0.02% OR LESS, MG: 0.02% OR LESS, B: 0.02% OR LESS, AND ONE OR MORE RARE EARTH METALS: 0.2% OR LESS IN TOTAL, AND A BALANCE OF FAITH AND ACCIDENTAL IMPURITIES. THE CHEMICAL COMPOSITION HAS A VALUE OF AT LEAST 40 FOR PREW DEFINED BY THE FOLLOWING FORMULA (A): PREW = CR + 3.3 (MO + 0.5 W + 16N) WHERE THE PERCENTAGE OF EACH ELEMENT IS IN WEIGHT. STEEL SHOWS
Chemical tank steel with excellent pitting resistance and sulfuric acid corrosion resistance in seawater
Номер патента: KR100545750B1. Автор: 마쓰하시료,스에쓰구가즈히로,우메노마사키. Владелец: 신닛뽄세이테쯔 카부시키카이샤. Дата публикации: 2006-01-24.