What material is incoloy800H (NO8810) Nickel-based alloy chemical composition Incoloy seamless pipe manufacturer
Incoloy 800H
Material grade: Incoloy 800H nickel-based alloy
American brand: NO8810
German brand: X2NiCrAlTi3220
1. Overview of Incoloy 800H (NO8810) nickel-based alloy:
The Cr content in Incoloy 800H (NO8810) nickel-based alloy is usually 15-25%, the nickel content is 30-45%, and it contains small amounts of aluminum and titanium. With Incoloy 0.05-0.1%, it better improves the strength of steel. This alloy has a high chromium content and sufficient nickel content, so it has high high temperature corrosion resistance. When used in pressurized water in industry, it has excellent stress corrosion cracking resistance, so it is used to manufacture stress corrosion cracking resistant equipment. . The corrosion resistance is better than that of general austenitic stainless steel, and also better than I, Inconel 600 and Monel 400 alloy.
Incoloy800H chemical composition:
Cr: 21.0
Ni: 32.5
Ti: 0.38
Al: 0.38
Fe:45.7
C：0.1
Cu: 0.50
S: 0.015
Si: 0.50
Mn: 1.0
Incoloy800H product form and execution standards
Products--ASTM standards--ASME standards--AME standards
Thin sheets, plates, strips--B409--SB409--5871
Seamless pipe--B163.B407--SB163.SB407
Welded pipe--B514
Bars and cakes--B408--SB408
Forgings--B564--SB564
Incoloy800H physical properties
Density: 8.0G/CM³
Melting point: 1350-1400℃
The minimum mechanical properties of Incoloy800H alloy at room temperature
Alloy state: solid solution
Tensile strength RM N/MM²: 450
Yield strength RP0.2N/MM²: 180
Elongation A5%: ≤35
Incoloy 800H (NO8810) nickel-based alloy melting temperature range: 1350~1400℃.
3. Incoloy 800H (NO8810) nickel-based alloy specific heat capacity: 455J/(kg·℃).
4. Incoloy 800H (NO8810) nickel-based alloy density: 8.0 g/cm3.
5. Incoloy 800H (NO8810) nickel-based alloy magnetic properties: none.
4. Application areas of Incoloy 800H (NO8810) nickel-based alloy:
Incoloy 800H (NO8810) alloy chemical industry, nuclear generators, nitric acid coolers, acetic anhydride cracking tubes, heat exchange equipment, heat exchange tubes, etc.
5. Incoloy 800H (NO8810) nickel-based alloy implementation standards:
1. Incoloy 800H (NO8810) alloy hot-rolled steel plate: ASTM B409.
2. Incoloy 800H (NO8810) alloy rod: ASME SB-408.
3. Incoloy 800H (NO8810) alloy steel pipe: ASME SB-407.
4. Incoloy 800H (NO8810) alloy forgings: ASME SB-564.
6. Incoloy 800H (NO8810) nickel-based alloy processing performance:
1. Incoloy 800H (NO8810) alloy hot processing:
(1) The temperature range is 1200℃~950℃, and the cooling method is water quenching or rapid air cooling.
(2) In order to obtain the best performance and creep resistance, solution treatment must be carried out after thermal processing.
(3) The material can be directly fed into a furnace that has been heated to 1200°C, kept warm for a sufficient time and then quickly discharged from the furnace for thermal processing within the specified temperature range. When the material temperature drops
2. Incoloy 800H (NO8810) alloy cold processing:
(1). The work hardening rate is greater than that of austenitic stainless steel, so processing equipment needs to be selected. Cold-worked materials should be in a solution heat-treated state, and when the amount of cold work is large, they should be
(2) If the amount of cold working is greater than 10%, the workpiece needs to be subjected to secondary solution treatment.
3. Incoloy 800H (NO8810) alloy welding process:
It is suitable for welding with the same material or other metals using any traditional welding process, such as tungsten electrode inert gas welding, plasma arc welding, manual sub-arc welding, and metal inert gas welding, which are the preferred options. If manual arc welding is used, it is recommended to use (Ar+He+H2+CO2) as the shielding gas.
7. Varieties, specifications and supply status of Incoloy800H (NO8810) nickel-based alloy:
1. Variety classification: Shanghai Gangxiong Incoloy800H seamless pipe, Incoloy800H steel plate, Incoloy800H round steel, Incoloy800H forgings, Incoloy800H welded pipe, Incoloy800H steel strip, Incoloy800H wire and supporting welding materials.
2. Delivery status: Seamless pipe: solid solution + acid whitening, length can be fixed; plate: solid solution, pickling, trimming; welded pipe: solid solution acid whitening + RT% flaw detection, forging: annealing + smooth rolling , delivered in solid solution soft state, with scale removed; the wire is delivered in solid solution pickled disc shape or straight strip shape, solid solution straight strip fine polished state.
Incoloy800H corrosion resistance:
800H can resist corrosion from corrosive media. Its higher nickel content makes it highly resistant to stress corrosion cracking under aqueous corrosive conditions. The high chromium content gives it better resistance to pitting and crevice corrosion cracking. This alloy has good corrosion resistance to nitric acid and organic acids, but has limited corrosion resistance in sulfuric acid and hydrochloric acid. In addition to the possibility of pitting corrosion in halides, it has good corrosion resistance in oxidizing and non-oxidizing salts. It also has good corrosion resistance in water, steam as well as steam, air, carbon dioxide and mixtures.
