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High Temp Metals Alloy 49 Iron-Nickel High Permeability Alloy, Strip, Cold-Rolled

Category Metal , Electronic/Magnetic Alloy , Superalloy , Iron Base
Manufacturer High Temp Metals
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF High Temp Metals Alloy 49 Iron-Nickel High Permeability Alloy, Strip, Cold-Rolled.pdf
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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.
Physical Properties Metric English Comments
Specific Gravity 8.18 g/cc
8.18 g/cc
Mechanical Properties Metric English Comments
Hardness, Rockwell B 100
100
Tensile Strength, Ultimate 896 MPa
130000 psi
Elongation at Break 5.0 %
5.0 %
Modulus of Elasticity 166 GPa
24100 ksi
Thermal Properties Metric English Comments
CTE, linear 8.28 µm/m-°C

@Temperature 25.0 - 204 °C
4.60 µin/in-°F

@Temperature 77.0 - 400 °F
Specific Heat Capacity 0.502 J/g-°C
0.120 BTU/lb-°F
Thermal Conductivity 13.0 W/m-K
90.2 BTU-in/hr-ft²-°F
Melting Point 1430 °C
2600 °F
Component Elements Properties Metric English Comments
Carbon, C <= 0.020 %
<= 0.020 %
Iron, Fe >= 51 %
>= 51 %
As Balance
Manganese, Mn <= 0.50 %
<= 0.50 %
Nickel, Ni <= 48 %
<= 48 %
Silicon, Si <= 0.35 %
<= 0.35 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000480 ohm-cm
0.0000480 ohm-cm
Temperature coefficient = 0.0036/°C (-17.8 to 499°C)
Magnetic Permeability 8000
8000
Initial; B100; per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
12000
12000
Initial; B100; per ASTM A596, 0.014 in. thickness; heat treatment unknown
90000
90000
Maximum; per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
150000
150000
Maximum; per ASTM A596, 0.014 in. thickness; heat treatment unknown
Magnetic Coercive Force, Hc 0.040 - 0.070 Oe
0.040 - 0.070 Oe
from 10,000 Gauss; per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
0.040 - 0.070 Oe
0.040 - 0.070 Oe
from 10,000 Gauss; per ASTM A596, 0.014 in. thickness; heat treatment unknown
Magnetic Saturation Flux Density, Bmax 15000 Gauss
15000 Gauss
H-100 Oersted; per ASTM A596, 0.014 in. thickness; after hydrogen annealing
15000 Gauss
15000 Gauss
H-100 Oersted; per ASTM A596, 0.025 - 0.125 in. thickness; after hydrogen annealing
Magnetic Remanence, Br 9000 Gauss
9000 Gauss
per ASTM A596, 0.025 - 0.125 in. thickness; heat treatment unknown
9000 Gauss
9000 Gauss
per ASTM A596, 0.014 in. thickness; heat treatment unknown
Curie Temperature 450 - 500 °C
842 - 932 °F
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