Alloy 42/ Feni 42 & Alloy 52

Product Type: Wire Strip Ribbon Bar Sheet
Material: Fe Ni
Treatment: Hydrogen Annealing
Surface: Bright
Condition: Soft
Brand Name: Wisdom
Customization:
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Basic Info.

Model NO.
Alloy 42
Product
Alloy 42
Certificate
ISO9001
Quality Test
Mill Test Report
MOQ
1kg
Paument Currency
USD/Eur/RMB
Transport Package
It Can Be Customized by The Clients′ Demand
Specification
CE, ISO9001, ROHS, SGS
Trademark
WISDOM
Origin
Shanghai, China
Production Capacity
5000ton/Year

Product Description


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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