Alloy 52,ASTM F30,UNS K95050,(Fe-50Ni),Chinese 4J50
Alloy 52 is a 52% nickel-iron alloy developed for glass-to-metal seals for some of the soft glasses and some ceramics. Produced with good machining properties, it’s manufactured in a controlled environment under controlled conditions.
Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

Description

Alloy 52 is a 52% nickel-iron alloy developed for glass-to-metal seals for some of the soft glasses and some ceramics. Produced with good machining properties, it’s manufactured in a controlled environment under controlled conditions.

Application

Glass to metal seals for electronic tubes, automotive and industrial lamps, and specialty hermetic devices.

parameter

Cross Reference:

Russia	USA	UK	Japan	France	Germany
50H	FeNi50	Nilo51	NS-1	N50	Vacovit500

Typical chemistry:

C	P	S	Mn	Si	Al	Ni	Fe
≤
0.05	0.020	0.020	0.80	0.30	0.10	49.0-50.5	BAL

Physical Property:

Heat Treatment System of the Samples	Average Coefficient of Linear Expansion
	20-300°C	20-400°C	20-500°C
To be heat treated at a temperature of 900±20℃ the hydrogen, hold for 1h, cool at a rate less than 5℃/min to 200℃	9.2-10.0	9.2-9.9

Mean coefficient of linear expansion at different temperature, ā/(10^-6/K):

Mechanical Properties:

Elongation	% in 2 in.	35
Typical Hardness Ann	Rockwell HRB	80
Modules of Elasticity	ksi	23
	MPa	159
Yield Strength	ksi	40
	MPa	276
Tensile Strength	ksi	80
	MPa	552

Size Range

Sheet	Thickness:0.10mm~3.50mm, width: ≤300mm
Plate	Thickness:3.5mm~40.0mm, width: ≤500mm
Round wire	Thickness:0.10mm~5.0mm
Flat Wire	Dia 0.5mm~Dia 5.0mm, length≤1000
Rod	Dia 5.0mm~Dia 8.0mm, length≤2000
	Dia 8.0mm~Dia 32.0mm, length≤2500
	Dia 32.0mm~Dia180.0mm, length≤1000
Capillary	OD 8.0mm~1.0mm,ID 0.1~8.0 length≤2500
Pipe	OD 120mm~8.0mm,ID 8.0~129 length≤4000

Condition: (With max tolerance) cold rolled, cold drawn, hot rolled , hot forging ,peeled turned ,bright ,bright annealed