Alloy 42 (42Ni-Fe) - UNS K94100 | Low Thermal Expansion Alloys

Alloy 42 (42Ni-Fe) - UNS K94100 | Low Thermal Expansion Alloys About

Grade	Alloy 42 (42Ni-Fe)
Reference Standards (for reference only)	UNS K94100 DIN 1.3917 (17745)
Shapes	Coil, Sheet
Thickness	Please contact us.
Width	Please contact us.
Length	Strip or Sheet (Length less than 2,000mm)
Technique	Cold Rolled
Temper	Annealed, Skin passed, As Rolled(Hard)
Examples of Applications	Lead frames, Glass Encapsulants
Coil I.D.	300, 400, 500mm
Chemical Composition	42Ni-Fe
Density	8.11 g/cm3
Thermal Expansion	4.0-4.7x10-6/K (20-480oC)
Thermal Conductivity	10.5 W/(m K)
Minimum Order Quantity	Please contact us.
Country of Origin	Japan
Payment Terms	Telegraphic Transfer (T/T)
Delivery Terms	EXW, FOB, CIF, DAP etc.
Packing	Our Standard Packing for Export
Export Markets	Asia, Middle East, North America, South America, Europe etc.

Alloy 42 (42Ni-Fe) Description :

Alloy 42 is a low thermal expansion alloy with a main composition of 42Ni-Fe.

Although its coefficient of thermal expansion is greater than that of Alloy 36, it is close to the glass, ceramics, and silicon, and is threfore used as a glass sealing material for IC lead frames and other applications.

FAQ's of Alloy 42 (42Ni-Fe) - UNS K94100 | Low Thermal Expansion Alloys:

Q: How is Alloy 42 (42Ni-Fe) typically used in the electronics industry?

A: Alloy 42's low thermal expansion makes it a preferred material for manufacturing lead frames in semiconductors and glass-to-metal seals in electronics, ensuring components remain dimensionally stable during temperature fluctuations.

Q: What are the benefits of choosing Alloy 42 for glass encapsulant applications?

A: The main benefit lies in Alloy 42's thermal compatibility with glass, minimizing stresses and seal failures during temperature changes. This results in improved reliability and longevity in electronic and hermetic sealing applications.

Q: When should Alloy 42 be selected over other nickel-iron alloys?

A: Alloy 42 is chosen when precise dimensional control is required at operating temperatures, notably where a close match with the expansion coefficient of glass or certain ceramics is essential, as in microelectronic packaging.

Q: Where can I source Alloy 42 coils and sheets with custom dimensions?

A: As a seasoned manufacturer, exporter, and supplier in Japan, we provide Alloy 42 in coil and sheet form. Custom thickness and width options are available upon request-please contact us with your requirements.

Q: What processing options are available for Alloy 42 (42Ni-Fe)?

A: Alloy 42 can be supplied in annealed for ease of forming, skin passed for improved surface finish, and as rolled (hard) for enhanced strength. This versatility supports various fabrication and end-use needs.

Q: How does the chemical composition of 42% nickel and balance iron impact the alloy's performance?

A: This specific nickel-iron ratio imparts a low coefficient of thermal expansion to Alloy 42, making it particularly effective in applications that demand dimensional precision under temperature changes.