Alloy 42/ Feni 42 & Alloy 52

Model NO.: Alloy 42 Material: Fe Ni Surface: Bright Brand Name: Wisdom Certificate: ISO9001 MOQ: 1kg Trademark: WISDOM Origin: Shanghai, China Product Type: Wire Strip Ribbon Bar Sheet Treatment: Hydrogen Annealing Condition: Soft Product: Alloy 42 Quality Test: Mill Test Report Paument Currency: USD/Eur/RMB Specification: CE, ISO9001, ROHS, SGS
Introduction
Alloy 42 is a low expansion alloy which is very similar to Invar 36. It has a low expansion up to about 300ºC. Principally used as strip for semiconductor lead frames in integrated circuits and bi-metal strip, the alloy can be also used in ceramic to metal seals with alumina and the glass bulb envelope to metal seals.
A nickel-iron controlled-expansion alloy containing 41% nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 300°C.
whose coefficient of expansion makes it suitable for joining to ceramic chips in miniature electronic circuits.
Alloy 42 widely used for glass-to-metal sealing of components that are enclosed in a glass envelope, such as lamps and electron tubes.

Typical Uses and Applications
Alloy 42 (Nilo 42) is used for semiconductor lead frames in integrated circuits, bi-metal thermostat strip, thermostat rods, for ceramic-to-metal seals with alumina ceramics, and various glass-to-metal seals such as the core of copper-clad-wire for sealing into glass envelopes of electric bulbs, radio valves, television tubes and fluorescent lights.

Product Details
Chemical composition:

Grade	C%	P%	S%	Mn%	Si%	Al%	Co%	Ni%	Fe%
Alloy 42	Max 0.05	Max 0.020	Max 0.020	Max 0.80	Max 0.30	Max 0.10	Max 1.0	41.0-42.5	Bal.

Specifications:

Grade	UNS	Werkstoff Nr.
Alloy 42	K94100	1.3917

Physical Properties:

Grade	Density	Melting Point	Electric Resistivity
Alloy 42	8.12 g/cm3	1440°C	0.61μΩ·m

 
Mechanical Properties:

Grade	Tensile Strength	Yield Strength  N/mm²	Elongation (%)
	N/mm²	(0.2% Offset)
Alloy 42	490	250	43

 
Coefficient of Expansion

Grade	Linear Coefficient of Thermal Expansion ,10-6/ºC
	20-100ºC	20-200ºC	20-300ºC	20-400ºC	20-450ºC	20-500ºC	20-600ºC
Alloy 42	5.6	4.9	4.8	5.9	6.9	7.8	9.2

 
Available Specifications:

Pipe Smls	Tube  Smls	Sheet/Plate	Bar	Wire
ASTM B  ASME SB 163	B163	ASTM F30	ASTM B  ASME SB 166,	ASTM F29

 
Available forms:
Alloy 42 wire, bar, rod, strip, forging, plate, sheet, tube, fastener and other standard forms are available.

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Product Categories : Super Alloy