Nickel alloys are widely recognized for their superior magnetic, thermal, and mechanical properties, making them essential in various industrial applications. Among these, the grades 1J46, 1J50, 1J79, and 1J85 are prominent, each offering unique compositions and characteristics suited for specific needs. This article provides an in-depth look at their chemical compositions and mechanical properties as outlined by the GBN198-1988 standard.
Chemical Composition
1J46
Carbon (C): ≤0.03%
Phosphorus (P): ≤0.02%
Sulfur (S): ≤0.02%
Manganese (Mn): 0.6-1.1%
Silicon (Si): 0.15-0.30%
Nickel (Ni): 45.0-46.5%
Copper (Cu): ≤0.2%
Iron (Fe): Balance
1J50
Carbon (C): ≤0.03%
Phosphorus (P): ≤0.02%
Sulfur (S): ≤0.02%
Manganese (Mn): 0.3-0.6%
Silicon (Si): 0.15-0.30%
Nickel (Ni): 49.0-50.0%
Copper (Cu): ≤0.2%
Iron (Fe): Balance
1J79
Carbon (C): ≤0.03%
Phosphorus (P): ≤0.02%
Sulfur (S): ≤0.02%
Manganese (Mn): 0.6-1.1%
Silicon (Si): 0.30-0.50%
Nickel (Ni): 78.5-81.5%
Molybdenum (Mo): 3.8-4.1%
Copper (Cu): ≤0.2%
Iron (Fe): Balance
1J85
Carbon (C): ≤0.03%
Phosphorus (P): ≤0.02%
Sulfur (S): ≤0.02%
Manganese (Mn): 0.3-0.6%
Silicon (Si): 0.15-0.30%
Nickel (Ni):: 79.0-81.0%
Molybdenum (Mo):: 4.8-5.2%
Copper (Cu): ≤0.2%
Iron (Fe): Balance
Mechanical Properties
1J46
Resistivity: 0.45 μΩ·m
Density: 8.2 g/cm³
Magnetostrictive Coefficient: 25 x10¯²
Brinell Hardness: 170 HBs (unannealed), 130 HBs (annealed)
Tensile Strength: 735 MPa (unannealed/annealed)
Elongation: 3%
1J50
Resistivity: 0.45 μΩ·m
Density: 8.2 g/cm³
Magnetostrictive Coefficient: 25 x10¯²
Brinell Hardness: 170 HBs (unannealed), 130 HBs (annealed)
Tensile Strength: 785 MPa (unannealed), 450 MPa (annealed)
Yield Strength: 685 MPa (unannealed), 150 MPa (annealed)
Elongation: 3% (unannealed), 37% (annealed)
1J79
Resistivity: 0.55 μΩ·m
Density: 8.6 g/cm³
Magnetostrictive Coefficient: 2 x10¯²
Brinell Hardness: 210 HBs (unannealed), 120 HBs (annealed)
Tensile Strength: 1030 MPa (unannealed), 560 MPa (annealed)
Yield Strength: 980 MPa (unannealed), 150 MPa (annealed)
Elongation: 3% (unannealed), 50% (annealed)
1J85
Resistivity: 0.56 μΩ·m
Density: 8.75 g/cm³
Magnetostrictive Coefficient: 0.5 x10¯²
Brinell Hardness, Tensile Strength, Yield Strength, and Elongation: Data unavailable in the unannealed and annealed states.
Applications and Usage
The nickel alloys 1J46, 1J50, 1J79, and 1J85 are primarily used in applications requiring high magnetic permeability, good thermal stability, and corrosion resistance. Their unique chemical compositions and mechanical properties make them suitable for components in transformers, relays, and magnetic shielding.
Key Takeaways:
1J46 and 1J50: Preferred for high-temperature applications due to their nickel content and stability.
1J79 and 1J85: Widely used in magnetic applications due to their enhanced magnetostrictive properties and high nickel content.
Understanding the properties of these nickel alloys is essential for optimizing their use in industrial applications, where their unique compositions and mechanical properties can deliver significant performance advantages.