Incoloy 330 nickel-based alloy

Incoloy 330
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Incoloy 330
Data grade: Incoloy 330 nickel-based alloy
American brand: UNS NO8830
 
1. Overview of Incoloy 330 (NO8330) nickel-based alloy:
Incoloy 330 (N08330) is a nickel-iron-chromium austenitic alloy specifically designed to resist oxidation and carburization in high-temperature environments. The 34%-37% nickel content makes the material highly resistant to chloride stress corrosion cracking and sigma phase precipitation embrittlement. The material is processed using standard processing methods for stainless steel and nickel alloys. It is widely used to resist corrosion in environments where cycle heating and carburization are combined.
2. Chemical composition of Incoloy 330 (NO8330) nickel-based alloy: %
C≤Si≤Mn≤P≤S≤Cr≥Ni≥Mo≥Cu≤
0.080.75-1.502.000.0300.03017.0-20.034.0-37.01.0-1.751.00
otherSn≤Pb≤Ti≤Fe≤Co≤V≤W≤Nb≤
0.0250.005------
3. Physical properties of Incoloy 330 (NO8330) nickel-based alloy:
1. Density: ⑴ρ=8.08g/cm3(gram/cubic centimeter), ⑵ 0.292 Ib/in3(pounds per cubic inch);
2. Specific heat: ⑴0.11 NTU/Ib/°F (32-212°F) (pound/pound/degree Fahrenheit); 460Joules/kg/℃ (0-100℃) (joules/kg/degree Celsius);
3. Magnetic permeability: 1.02at70°F/20℃ (RT);
4. Linear average coefficient of thermal expansion:
5. Electric heating characteristics:
temperaturethermal conductivityResistivity
°F℃Btu-in/ft2-h-°F★Watts/meter/degrees Celsiusmicro ohm centimeterMicro ohms. rice
75twenty four8612.46121.017
40020410815.66491.079
80042713419.36881.144
120064916223.47211.199
160087119828.67441.237
180098221631.27491.245
Note: Btu-in/ft2-h-°F refers to the amount of heat directly conducted per square foot or inch of material per hour of temperature difference per degree Fahrenheit. Heat is in British thermal units Btu
(1 btu is the energy required to heat 1 pound of water 1 degree Fahrenheit).
4. Mechanical properties of Incoloy 330 (NO8330) nickel-based alloy:
1. Mechanical properties of annealed state at room temperature:
Ultimate tensile strength, ksi(MPa)80-85 (552-586)
0.2% conditional yield strength, ksi (MPa)30-43 (207-296)
Two-inch elongation %40-45
Hardness, Rockwell B grade70-85
2. High temperature mechanical properties, tensile properties of annealed materials:
5. Corrosion resistance of Incoloy 330 (NO8330) nickel-based alloy:
Incoloy 330 (NO8330) has excellent corrosion resistance, especially against oxidation, carburization and nitriding environments. In an aqueous medium environment, the chromium component of 330 can resist corrosion in oxidizing environments, and the nickel component can enhance resistance to reduction corrosion. The alloy's high nickel content makes the material highly resistant to chloride stress corrosion cracking and sigma phase embrittlement.
6. Oxidation resistance of Incoloy 330 (NO8330) nickel-based alloy:
Incoloy 330 (NO8330) has excellent oxidation resistance and good scaling resistance at temperatures as high as 2000°F (1095°C). Any oxide scale that forms will adhere tightly to the surface of the material, especially under alternating hot and cold cycles.
7. Carburization resistance of Incoloy 330 (NO8330) nickel-based alloy:
35% nickel and a certain amount of silicon give the material excellent resistance to carburization. In the alternating environment of carburization and oxidation, Alloy 330 shows excellent resistance to"green rot"phenomenon.
8. Heat treatment of Incoloy 330 (NO8330) nickel-based alloy:
Incoloy 330 (NO8330) is an austenitic stainless steel that cannot be hardened by heat treatment. Hardening to room temperature strength is only possible through cold working. For most high temperature environment applications, 330 is not annealed after cold forming or welding. If the material requires full annealing, this should be done within the temperature range of 1870-2050°F (1020-1120°C). Water quenching the material provides the best creep resistance, but rapid cooling below 800°F (425°C) can also achieve the same effect.
9. Incoloy 330 (NO8330) nickel-based alloy manufacturing:
Incoloy 330 (NO8330) alloy can be hot or cold formed using standard procedures for austenitic stainless steels and nickel alloys. The alloy's work hardening rate is comparable to other austenitic stainless steels. It is recommended to process the material at room temperature. If the material requires thermal processing, the material should be heated uniformly to 2050-2150°F (1120-1180°C) and then lowered to 17504°F (950°C) for insulation. The cooling of the material should be rapid with water. We recommend annealing after hot working to ensure the best corrosion resistance and best grain structure of the material. The material cannot be forged, formed or bent in the 1200-16009F (650-870°C) range because the material's ductility is low in this temperature range, which will cause the intergranular structure of the austenitic alloy material to crack.
10. Incoloy 330 (N08830) nickel-based alloy welding:
Incoloy 330 (N08830) can be welded by tungsten arc, electrode welding and plasma arc processing. Tungsten arc welding has the best corrosion resistance. Before welding, the material should be in an annealed state, kept clean and free of dirt, grease and other impurities. Grinding should be done within one inch on either side of the joint. The temperature between welding layers cannot exceed 300°F (150°C). No heat treatment is required before or after welding. Alloy 330 can be welded into different types of metals.
11. Varieties, specifications and supply status of Incoloy 330 (NO8330) nickel-based alloy:
Shanghai Disheng Special Alloy can produce various specifications of Incoloy 330 seamless pipes, Incoloy 330 steel plates, Incoloy 330 round bars, Incoloy 330 forgings, Incoloy 330 flanges, Incoloy 330 rings, Incoloy 330 welded pipes, Incoloy 330 steel strips, Incoloy 330 wire and supporting welding materials.
Variety classificationdelivery status
Seamless tubeSolid solution + acid white, length can be customized
plateSolid solution, pickling, trimming
welded pipeSolid solution acid whitening + RT% flaw detection
ForgingsAnnealing + polishing
RodForged state, surface polished or polished
stripCold rolled, solid solution soft state, descaled delivery
wire materialDelivered in solid solution pickled disc shape or straight strip shape, solid solution straight strip in fine polished state
Note: Incoloy is a registered trademark of Special Metals Group Corporation.