1.4777 Stainless steel, or N08926, is a super austenitic stainless steel with excellent corrosion resistance, high temperature strength and oxidation resistance, suitable for high temperature and corrosive environments. Its chemical components include carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, molybdenum, copper, titanium, aluminum, and niobium. Physical properties include high density, high melting point, low thermal conductivity, linear expansion coefficient, and resistivity. Extensive applications, including chemical industry, ocean engineering, oil and natural gas, nuclear power plants and aerospace. The main advantages are its corrosion resistance, high temperature stability and good processing and welding properties.
1.4777 Stainless steel, also known as N08926, is a nickel-based alloy belonging to the category of superaustenitic stainless steel. This material is known for its excellent corrosion resistance, high temperature strength and oxidation resistance, and is particularly suitable for use in harsh environments where high temperature and corrosive media coexist.
chemical composition
1.4777 stainless steel mainly includes: carbon (C): 0.01% silicon (Si): 0.50% manganese (Mn): 1.00% phosphorus (P): 0.040% Sulfur (S): 0.030% chromium (Cr): 19.00% nickel (Ni): 23.00% molybdenum (Mo):4.00-5.00% copper (Cu): 0.5% Titanium (Ti): 0.60% aluminum (Al): 0.20% niobium (Nb): 0.30%
physical property
1.4 Physical properties of 777 stainless steel include: density: approximately 8.0 g / cm³ Melting point: approximately 1400-1450℃ thermal conductivity: approximately 15 W / (mK) (100℃) Line expansion coefficient: approximately 1610 ⁶ / K (0-100℃) resistivity: approximately 0.72 Ω mm² / m (20℃)
Corrosion resistance
1.4777 stainless steel has excellent corrosion resistance, especially in the chloride environment. It can resist a variety of corrosion media, including acid, alkali, salt, etc., suitable for chemical industry, Marine engineering, oil and gas and other industries.
application area
1.4777 stainless steel is widely used in the following fields:
Chemical and petrochemical: used for the manufacture of chemical containers, equipment, etc
Ocean engineering: used for Marine platforms and related equipment
Petroleum industry: used for oil pipelines, equipment, etc
Nuclear power plant: used for nuclear power plant equipment
Aerospace: used for manufacturing high temperature and high pressure containers, etc
High temperature equipment: such as furnace glow, heat exchanger and burner, etc
material advantage
The main advantages of 1.4777 stainless steel are:
Excellent corrosion resistance: can resist a variety of corrosion media, suitable for harsh environments.
High temperature stability: to maintain good mechanical properties and corrosion resistance in high temperature environment.
Good processing performance: it can be formed and processed through the conventional metal processing technology.
Good welding performance: common welding methods can be used for connection, such as arc welding, argon arc welding, etc.
In conclusion, 1.4777 stainless steel is regarded as an ideal material choice in multiple industrial fields due to its unique combination of properties
