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Exaton 20.25.5.LCuR is a covered electrode with type with rutile-basic coating and normal recovery, used for welding of high-alloy austenitic stainless of UNS N08904 type, also known as 904L (e.g. Sandvik 2RK65).Exaton 20.25.5.LCuR gives a fully austenitic chromium-nickel-molybdenum weld metal with especially low carbon content and copper addition. Spray transfer gives a bead with a finely rippled surface, little spatter and good slag removal.It is suitable for joining steels of the 20Cr/25Ni/4.5Mo/1.5Cu type such as 2RK65 and 904L used in many areas of the process industry, such as in the production of acetic acid, sulphuric acid, terephthalic or tartaric acid and vinyl chloride as well as other chloride containing media. It is also suitable for use in cooling operations involving sea water or heavily polluted river water.Exaton 20.25.5.LCuR may also be used to join 317L where improved corrosion resistance in specific media is required. These electrodes may be used to join 2RK65, 904L, and 317L to other grades of stainless steel.

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Описание

 

Exaton 20.25.5.LCuR is a covered electrode with type with rutile-basic coating and normal recovery, used for welding of high-alloy austenitic stainless of UNS N08904 type, also known as 904L (e.g. Sandvik 2RK65).Exaton 20.25.5.LCuR gives a fully austenitic chromium-nickel-molybdenum weld metal with especially low carbon content and copper addition. Spray transfer gives a bead with a finely rippled surface, little spatter and good slag removal.It is suitable for joining steels of the 20Cr/25Ni/4.5Mo/1.5Cu type such as 2RK65 and 904L used in many areas of the process industry, such as in the production of acetic acid, sulphuric acid, terephthalic or tartaric acid and vinyl chloride as well as other chloride containing media. It is also suitable for use in cooling operations involving sea water or heavily polluted river water.Exaton 20.25.5.LCuR may also be used to join 317L where improved corrosion resistance in specific media is required. These electrodes may be used to join 2RK65, 904L, and 317L to other grades of stainless steel.

 

Типичные свойства образца с V-образным надрезом по Шарпи

После сварки
Работа удара 48 ft-lb
Работа удара 65 J
Защитный газ ISO
Температура испытания 68 °F
Температура испытания 20 °C

Механические свойства при растяжении

Защитный газ Предел прочности при растяжении Предел текучести Состояние Удлинение
ISO 590 MPa (86 ksi) 410 MPa (59 ksi) После сварки 35 %

Данные наплавки

Ток Время горения электрода при 90% от макс. Тока Производительность наплавки при токе 90% от максимального Диаметр КПД, % Кол-во электродов/кг наплавл. Металла В
60-85 A 44 sec 0.9 kg/h (2.0 lb/h) 2.5 x 300.0 mm (0.098 x 11.8 in.) 60 % 91 24 V
85-130 A 60 sec 1.5 kg/h (3.3 lb/h) 3.2 x 350.0 mm (1/8 x 13.8 in.) 58 % 41 27 V
95-180 A 64 sec 1.9 kg/h (4.2 lb/h) 4.0 x 350.0 mm (5/32 x 13.8 in.) 51 % 30 29 V

Классификации

Классификации EN ISO 3581-A : E 20 25 5 Cu N L R 3 2
SFA/AWS A5.4 : E385-16
Werkstoffnummer : 1.4519

Одобрения

Одобрения CE EN 13479
VdTÜV 02805
Одобрения на материалы выдаются с привязкой к заводу изготовителю. Подробную информацию можно получить в представительствах ESAB.

Характеристики расходного материала

Тип сплава Austenitic CrNiMo
Тип покрытия Basic Rutile
Содержание ферритной фазы FN 0
Сварочный ток AC, DC+

Хим. состав наплавленного металла

Хим. состав наплавленного металла
C Cr Cu Mn Mo Ni Si
0.03 % 20 % 1.5 % 1 % 4.7 % 25 % 0.5 %

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