Alloy 50(1J50)Permalloy

Common Trade Names: China 1J50, Russia 50H, Hy-Ra49Permalloy

This soft magnetic alloy consisting of 49% Nickel,  balance Iron used where high initial permeability. maximum permeability, and low core loss is needed Applications: • Electro-magnetic shielding     •  Specialty transformer laminations    • Toroidal tape wound cores     • High quality motor laminations    • Stepping motors

Grade	U.K.	JANPAN	U.S.A.	Russia	Standard
Supermalloy (1J50)	Mumetal	PCS	Hy-Ra49 Permalloy	50H	ASTM A753-78 GBn 198-1988

Alloy50(1J50) Chemical Composition

Grade	Chemical Composition (%)
	C	P	S	Cu	Mn	Si	Ni	Fe
Supermalloy  1J50	≤
	0.03	0.020	0.020	0.20	0.30~0.60	0.15~0.30	49.5~50.5	Balance

Alloy50(1J50) Physical Property

Grade	Resistivity (μΩ•m)	Density (g/cm3)	Curie point °C	saturation magnetostriction constant (×10-2)	Tensile Strength/MPa		Yelid Strength/MPa
Supermalloy 1J50
	0.45	8.2	500	25	450		150

Alloy50(1J50) Average Linear Expansion

Grade	Coefficient of Linear Expansion at Different Temperaturel(x 10-6/K)
	20～100℃	20～ 200℃	20～ 300℃	20～400℃	20～ 500℃	20～ 600℃	20～ 700℃	20～ 800℃	20～ 900℃
Alloy 50 1J50	8.9	9.27	9.2	9.2	9.4	--	--	--

--     Mumetal Shielding Potential                                                                                                                                                                     Permalloy has extremely high permeability and nominal coercive force that make it a suitable material for shielding operations. To achieve the desired shielding properties, HyMu 80 is annealed up to 1900oF or 1040oC subsequent to forming processes. Annealing at the elevated temperatures enhances the permeability and shielding properties.