Alloy 52 Controlled Expansion Alloy

Alloy 52 (aka Pernifer 50², NILO 50⁴ and Glass Seal 52¹) is a controlled expansion alloy, consisting of 51% Nickel, balance Iron; used in a wide variety of electronic applications, especially for glass seals.

Alloy 52 Products

Ed Fagan Europe Ltd. stocks Alloy 52 in a variety of forms and dimensions. Below are most of the standard stock form/sizes. If you do not see the size or form of Alloy 52 that you require, please call one of our materials experts; our sales people are very knowledgeable and can assist you. We can cut, slit, shear, or center less grind Alloy 52 to your exact specifications, and we also have tremendous versatility when it comes to custom sizes, packages, and unusual materials.

Alloy 52 Rod
Alloy 52 Rod Diameter	Alloy 52 Rod Diameter
1.016 mm Alloy 52 Rod	3.962 mm Alloy 52 Rod
1.473 mm Alloy 52 Rod	4.749 mm Alloy 52 Rod
1.524 mm Alloy 52 Rod	4.762 mm Alloy 52 Rod
1.587 mm Alloy 52 Rod	6.350 mm Alloy 52 Rod
1.676 mm Alloy 52 Rod	12.70 mm Alloy 52 Rod
2.381 mm Alloy 52 Rod

Alloy 52 Plate Annealed -- Call for Plate Sizes

Alloy 52 Strip/Coil Annealed
Alloy 52 Strip/Coil Thickness	Alloy 52 Strip/Coil Thickness
0.254 mm Alloy 52 Strip/Coil	0.381 mm Alloy 52 Strip/Coil

Applications

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

Alloy 52 Properties

Alloy 52 Physical Properties
Density	lb/cu in	0.3
Specific Gravity		8.3
Curie Temp	°F	986
	°C	530
Melting Point	°F	2600
	°C	1427
Electrical Resistivity	Micro-ohm-cm	44
	ohm-cir mil/ft	258
Thermal Conductivity	W/cm °C	0.14
	BTU-in/sq. ft-hr-	97
Specific Heat	Cal/g- °C	0.12
	BTU/lbm- °F	0.12
Thermal Expansion	ppm / °F (75°F to 842°F)	5.5
	ppm / °C (25°C to 450°F)	9.9

Alloy 52 Mechanical Properties
Tensile Strength	ksi	80
	MPa	552
Yield Strength	ksi	40
	MPa	276
Elongation	% in 2 in.	35
Typical Hardness Ann.	Rockwell HRB	80
Modulus of Elasticity	Mpsi	23
	kMPa	159

Alloy 52 Chemistry
maximum % unless noted
Iron	Bal
Nominal Nickel	50.5
Nominal Cobalt	--
Carbon	0.05
Silicon	0.30
Sulfur	0.025
Chromium	0.025

Alloy 52 Specifications
ASTM F-30	MIL 1-23011 CL 2	AMS 1-23011 CL 2

Alloy 52 Linear Coefficient of Thermal Expansion
Degree C		Degree C
30-100	10.5	30-450	9.6 - 10.7
30-150	10.5	30-475	10.1
30-200	10.4	30-500	10.0
30-250	10.4	30-525	10.4
30-300	10.2	30-550	10.2 - 10.7
30-325	--	30-600	10.8
30-350	10.2	30-700	11.7
30-375	--	30-800	12.5
30-400	10.1	30-900	13.3
30-425	--	30-1000	14.2

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.

1. Trademark Carpenter Technology Corp., Reading PA
2. Trademark ThyseenKrupp-VDM, Germany
4. Trademark Special Metals Corporation, USA

Controlled Expansion Alloys

Ed Fagan Europe Ltd. stocks a variety of similar alloys for low expansion, controlled expansion, glass-to-metal or ceramic sealing applications that may also satisfy your needs. EFI carries:
Invar
Kovar
42 Alloy
42-6 Alloy
46 Alloy
48 Alloy
52 Alloy

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