Incoloy 800H (NO8810) Nickel-based alloys typically have a Cr content of 15-25%, nickel content of 30-45%, and contain small amounts of aluminum and titanium. Compared with Incoloy 800 alloy, the carbon content is less than or equal to 0.1%, controlled to 0.05-0.1%, better improve the strength of the steel. The alloy has a high chromium content and sufficient nickel content, so it has a high temperature corrosion resistance, and is widely used in industry. In chloride, low concentration of NaOH aqueous solution and high temperature and high pressure water, it has excellent stress corrosion cracking resistance, so it is used to manufacture stress corrosion cracking resistance equipment.