Maraging Steel C250 Sheet

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Nickel Iron Alloys: Unveiling the Properties and Applications of Invar 36, Invar 42, Invar 48, and Invar 49Nickel iron alloys, also known as Invar alloys, have revolutionized various industries with their exceptional properties. These alloys are a group of iron-nickel alloys that boast remarkable dimensional stability, low thermal expansion, and high strength. In this article, we will delve into the properties and applications of four prominent grades: Invar 36, Invar 42, Invar 48, and Invar 49.
Chemical Properties of Nickel Iron AlloysThe chemical composition of nickel iron alloys varies depending on the grade. Here's a brief overview of the chemical composition of each grade:
- Invar 36: 36% nickel, 0.2% carbon, balance iron- Invar 42: 42% nickel, 0.2% carbon, balance iron- Invar 48: 48% nickel, 0.2% carbon, balance iron- Invar 49: 49% nickel, 0.2% carbon, balance iron
Mechanical Properties of Nickel Iron AlloysNickel iron alloys are renowned for their exceptional mechanical properties, including high strength, low thermal expansion, and good ductility. Here are some of the mechanical properties of each grade:
- Invar 36: Yield strength: 350-400 MPa, Tensile strength: 600-700 MPa, Elongation: 30-40%- Invar 42: Yield strength: 400-450 MPa, Tensile strength: 700-800 MPa, Elongation: 25-35%- Invar 48: Yield strength: 450-500 MPa, Tensile strength: 800-900 MPa, Elongation: 20-30%- Invar 49: Yield strength: 500-550 MPa, Tensile strength: 900-1000 MPa, Elongation: 15-25%
Physical Properties of Nickel Iron AlloysNickel iron alloys also exhibit some unique physical properties that make them suitable for various applications. Here are some of the physical properties of each grade:
- Invar 36: Density: 8.1 g/cm3, Melting point: 1420-1450°C, Thermal expansion: 1.2-1.5 ppm/°C- Invar 42: Density: 8.2 g/cm3, Melting point: 1450-1480°C, Thermal expansion: 1.0-1.3 ppm/°C- Invar 48: Density: 8.3 g/cm3, Melting point: 1480-1510°C, Thermal expansion: 0.8-1.1 ppm/°C- Invar 49: Density: 8.4 g/cm3, Melting point: 1510-1540°C, Thermal expansion: 0.6-0.9 ppm/°C
Applications of Nickel Iron AlloysNickel iron alloys are widely used in various industries due to their exceptional properties. Here are some of the common applications of each grade:
- Invar 36: Aerospace, automotive, energy, and electronics industries- Invar 42: Aerospace, automotive, and energy industries- Invar 48: Aerospace, energy, and electronics industries- Invar 49: Aerospace, energy, and electronics industries
ConclusionNickel iron alloys, including Invar 36, Invar 42, Invar 48, and Invar 49, are a group of iron-nickel alloys that offer remarkable dimensional stability, low thermal expansion, and high strength. By understanding the properties and applications of each grade, engineers and designers can select the best alloy for their specific application.