High Temp Metals Alloy 49 Iron-Nickel High Permeability Alloy, Strip, Formed and Deep Draw Quality

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High Temp Metals Alloy 49 Iron-Nickel High Permeability Alloy, Strip, Formed and Deep Draw Quality
Categories:	Metal; Electronic/Magnetic Alloy; Superalloy; Iron Base
Material Notes:	High Permeability "49" alloy is a 48% nickel-iron alloy which has a saturation flux density of approximately 15,000 Gauss after hydrogen annealing. Hysteresis loss is very low in either DC or AC circuits in which the frequency is less than 400 cycles per second. Following a low temperature hydrogen anneal at 1300/1400°F (704/760°C), alloy 49 exhibits constant permeability characteristics. Its initial permeability is approximately 500 Gauss. High Permeability "49" alloy resists weather and moisture corrosion to a moderate extent. High permeability "49" alloy has been used in laminated cores for instrument transformers, magnetic shields and cores for certain electronic and communications devices in which extremely high permeability at low magnetizing forces greatly increases the efficiency and effectiveness of the equipment. Because of its high permeability, it has also been used in solenoid cores in light, sensitive relays that must operate and respond to weak currents that induce low magnetizing forces. If components are to machined in volume from bar stock, High Permeability "49"-FM, a free-machining grade, is recommended. The standard grade , High Permeability "49" alloy, machines somewhat like the austenitic stainless alloys. It develops gummy chips but does not work harden as rapidly as the stainless alloys. Sulfur-bearing cutting compounds are highly detrimental to the final magnetic properties. Animal lard oil should be used in drilling and machining operations which must be performed at low speeds. Work hardened bars offer the best machining characteristics. Parts should be degreased and cleaned as soon as possible. Information provided by High Temp Metals.
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Available Properties

Specific Gravity
Hardness, Rockwell B
Tensile Strength, Ultimate
Elongation at Break
Modulus of Elasticity
Electrical Resistivity, Temperature coefficient = 0.0036/°C (-17.8 to 499°C)
Magnetic Permeability, Initial; B100; per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
Magnetic Permeability, Initial; B100; per ASTM A596, 0.014 in. thickness; heat treatment unknown
Magnetic Permeability, Maximum; per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
Magnetic Permeability, Maximum; per ASTM A596, 0.014 in. thickness; heat treatment unknown
Magnetic Coercive Force, H_c, from 10,000 Gauss; per ASTM A596, 0.014 in. thickness; heat treatment unknown
Magnetic Coercive Force, H_c, from 10,000 Gauss; per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
Magnetic Saturation Flux Density, B_max, H-100 Oersted; per ASTM A596, 0.025 - 0.125 in. thickness; after hydrogen annealing
Magnetic Saturation Flux Density, B_max, H-100 Oersted; per ASTM A596, 0.014 in. thickness; after hydrogen annealing
Magnetic Remanence, B_r, per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
Magnetic Remanence, B_r, per ASTM A596, 0.014 in. thickness; heat treatment unknown
Curie Temperature
CTE, linear
Specific Heat Capacity
Thermal Conductivity
Melting Point
Carbon, C
Iron, Fe, As Balance
Manganese, Mn
Nickel, Ni
Silicon, Si

Property Data

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