Incoloy825
Incoloy 825It is a fully austenitic nickel iron chromium alloy stabilized with titanium, and added with copper and molybdenum.Incoloy 825It is a universal engineering alloy that exhibits resistance to acid and alkali metal corrosion in both oxidizing and reducing environments.
The high nickel content gives the alloy effective resistance to stress corrosion cracking. It has good corrosion resistance in various media, such as sulfuric acid, phosphoric acid, nitric acid, and organic acids, as well as alkali metals such as *, potassium hydroxide, and hydrochloric acid solutions.Incoloy 825The high comprehensive performance is manifested in nuclear combustion solvers with diverse corrosive media, such as sulfuric acid, nitric acid, and *, all processed in the same equipment.
Incoloy825chemical composition
nickelNi：38-46chromiumCr：19.5-23.5ironFe: Excess carbonC：≤0.025manganeseMn：≤1.0siliconSi：≤0.5molybdenumMo：2.5-3.5
copperCu：1.5-3.0cobaltCo：≤1.0aluminiumAl：≤0.2TitaniumTi：0.6-1.2
Incoloy825Alloy characteristics
●Good resistance to stress corrosion cracking●Good resistance to pitting and crevice corrosion●Excellent antioxidant and non oxidative hot acid properties
●At room temperature and up to550℃It has excellent mechanical properties even at high temperatures●Has a manufacturing temperature of450℃Certification of Pressure Vessels
Incoloy825Application fields of alloys
Incoloy 825Widely used in various applications with temperatures not exceeding550℃The industrial sector.
Typical applications include:●Heating tubes, containers, baskets, and chains used in sulfuric acid pickling factories.●Seawater cooling heat exchanger, marine product pipeline system, acidic gas environment pipeline.●Heat exchangers, evaporators, washing and impregnation tubes, etc. in phosphoric acid production.●Air heat exchanger in petroleum refining●Food Engineering●Chemical Process●Flame retardant alloys for pressurized oxygen applications
Incoloy825welding
Incoloy 825Suitable for welding with the same material or other metals using any traditional welding process, such as tungsten inert gas welding, plasma arc welding, manual sub arc welding, metal inert gas welding, and melting inert gas welding, among which pulse arc welding is the * * solution. When using manual arc welding, it is recommended to use(Ar+He+H2+CO2)A protective gas mixed with multiple components.
Incoloy 825The welding must be carried out in an annealed state and cleaned of stains, dust, and various marks with a stainless steel wire brush. When welding at the root of the weld seam, in order to obtain the best quality of the root weld seam, the operation must be very careful(argon99.99)After welding at the root, the weld seam will not produce oxides. The color generated in the welding heat affected zone should be brushed off with a stainless steel brush before the weld area cools down.
welding materials
For gas shielded welding process, it is recommended to use the following filler metals
Metal welding rod:Nicrofer S 6020-FM625Material Number2.4831 SG- NiCr21Mo9Nb AWS A5.14: ERNiCrMo-3
covered electrode Material Number2.4621 EL- NiCr20Mo9Nb AWS A5.11: ENiCrMo-3
