Goodfellow Iron 40/Nickel 38/Boron 18 Alloy

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Goodfellow Iron 40/Nickel 38/Boron 18 Alloy
Categories:	Metal; Electronic/Magnetic Alloy; Nonferrous Metal; Solder/Braze Alloy
Material Notes:	Metallic glass (glassy alloy) or amorphous metal. Uses include soft magnetic applications, brazing, coating and as reinforcing fibers. Information provided by Goodfellow.
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Physical Properties	Metric	English	Comments

Density	7.90 g/cc	0.285 lb/in³

Mechanical Properties	Metric	English	Comments
Vickers Microhardness	740	740	kg(f)/mm²
Tensile Strength at Break	>= 700 MPa	>= 102000 psi
Tensile Modulus	64.0 GPa	9280 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000138 ohm-cm	0.000138 ohm-cm
Magnetic Coercive Force, H_c	0.10 Oe	0.10 Oe
Magnetic Saturation Flux Density, B_max	8800 Gauss	8800 Gauss
Magnetic Remanence, B_r	0.68 Gauss	0.68 Gauss	Remanence Ratio, B_r/B_s
Curie Temperature	353 °C	667 °F

Thermal Properties	Metric	English	Comments
Crystallization Temperature	410 °C	770 °F
Maximum Service Temperature, Air	125 °C	257 °F

Component Elements Properties	Metric	English	Comments
Boron, B	18 %	18 %
Iron, Fe	40 %	40 %
Molybdenum, Mo	4.0 %	4.0 %
Nickel, Ni	38 %	38 %

Descriptive Properties
Saturation magnetostriction (x10^-6)	12

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