Alloy 42
Description:
Nilo 42/ Alloy 42/UNS K94100
Alloy 42 (Nilo 42) is a nickel-iron controlled-expansion alloy containing 42% nickel. Alloy 42 (Nilo 42) has a low and normally constant coefficient of thermal expansion from room temperature to about 300oC (570oF). 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.
Chemical Composition:
|
Iron, Fe |
55 |
|
Nickel, Ni |
42 |
|
Others |
Remainder |
Mechanical Properties:
|
Material |
Condition |
Tensile Strength |
Yield Strength (0.2% Offset) |
Elongation (%) |
||
|
psi |
MPa |
psi |
MPa |
|||
|
Alloy 42 (Nilo 42) |
Annealed |
71,000 |
490 |
36,000 |
250 |
43 |
Specifications:
l UNS: K94100
l Werkstoff Nr. 1.3917
l ASTM F29 Wire
l ASTM F30 Sheet, Strip, Rod, Bar, Tubing, Wire
l B753 Sheet and Strip
l SEW 385 Sheet, Strip, Bar
l DIN 17745
l AFNOR NF A54-301
l Nilo 42
Applications:
The NILO 42 alloy is used in the following applications:
l Semiconductor lead frames in integrated circuits
l Bi-metal thermostat strip
l Thermostat rods
l Ceramic-to-metal seals
l Glass-to-metal seals for television tubes, fluorescent lights.