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Soft Magnetic Alloys: Physical & Mechanical Properties, and Specifications

Physical Properties
EFI Alloy Type	Units	EFI 79	EFI 50	EFI Cobalt 50	EFI Core Iron
Density	lb/cu in	.316	.295	.295	.284
	gm/cc	8.74	.316	8.20	7.86
Curie Temp	°F	860	840	1710	1400
	°C	460	450	932	760
Electrical Resistivity	Micro-ohm-mm	580	480	420	130
	ohm-cir mil/ft	349	290	253	79
Thermal Conductivity	W/cm °K	19	13	--	73
	BTU-in/hr-sq.ft-°F	134	90	--	500
Specific Heat	J/gm- °K	0.5	0.5	--	0.45
	BTU/lb- °F	0.12	0.12	--	0.11
Coefficient of Thermal Expansion	micro-in.in- °F (75°F to 750°F)	7.4	4.6	5.61	8.1
	micro-cm/cm- °C (25°C to 450°F)	13.3	8.3	10.1	14.5

Mechanical Properties (typical)
EFI Alloy Type	Units	EFI 79	EFI 50	EFI Cobalt 50	EFI Core Iron
Tensile Strength	KSI	80	75	120	30
	MPa	552	517	827	207
Yield	KSI	28	23	60	45
	MPa	195	154	413	310
Elongation	% in 2"	30	30	8	40

Applicable Specifications
EFI Alloy Type	EFI 79	EFI 50	EFI Cobalt 50	EFI Core Iron	EFI Vac Iron
UNS (1)	K14080	K94840	R30005	--	--
ASTM	A753	A753	A801	A848	A848
AMS (2)	N-14411C	N-14411C	11	--	--

ED FAGAN Europe Ltd. supplies the highest quality special purpose alloys and metals for Aerospace/Aviation, Defence, Magnetic, Electronics, Telecommunications, Lighting, Optical, Ceramics, Heat Treating, Medical, and other high-technology industries

Soft Magnetic Alloys

Ed Fagan Europe Ltd. stocks a variety of soft magnetic alloys for wide range of applications. EFI carries:
EFI Alloy 79
EFI Alloy 50
Hiperco 50
Vim Var Core Iron
Radiometal 4550

And we also have a large selection of other types of specialty metals and alloys for high technology applications, including:
Controlled Expansion Alloys
Electrical/Electronic Nickel
Refractory Metals and Alloys
Hard to Find Materials