Nickel-based alloy Incoloy 800H has better corrosion resistance than stainless steel
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. Compared with Incoloy 800 alloy, the carbon content is controlled from less than or equal to 0.1% to 0.05-0.1%, which better improves the strength of the steel. This alloy has a high chromium content and sufficient nickel content, so it has high high temperature corrosion resistance and is widely used in industry. It has excellent resistance to stress corrosion cracking in chloride, low-concentration NaOH aqueous solutions and high-temperature and high-pressure water, so it is used to manufacture equipment that is resistant to stress corrosion cracking. The corrosion resistance is better than that of general austenitic stainless steel and better than Inconel 600 alloy; in the manufacture of corrosion-resistant stress cracking equipment, it is better than Inconel 600 and Monel 400 alloy.
2. 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.
3. 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 below the thermal processing temperature, it needs to be reheated.
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 intermediate annealing should be performed when the amount of cold work is large.
(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:
Suitable for using any traditional welding process with the same material or other metals, such as tungsten electrode inert gas shielded welding, plasma arc welding, manual sub-arc welding, metal pole inert gas shielded welding, melting pole inert gas shielded welding, among which pulse arc welding is the preferred option. If manual arc welding is used, it is recommended to use (Ar+He+H2+CO2) as the shielding gas.
4. Varieties, specifications and supply status of Incoloy800H (NO8810) nickel-based alloy:
1. Variety classification: Shanghai Longji can produce various specifications of Incoloy800H seamless pipes, Incoloy800H steel plates, Incoloy800H round bars, Incoloy800H forgings, Incoloy800H flanges, Incoloy800H rings, Incoloy800H welded pipes, Incoloy800H steel strips, Incoloy800H wires and supporting welding material.
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 + polishing; Bars are in forged and rolled state, surface polished or polished; strips are cold rolled, solution soft, and descaled; wires are delivered in solution pickled disk shape or straight strip shape, solid solution straight strip fine grinding Delivery in light condition
