Nilo 42^* Specification
*Trade name of Special Metals Group of Companies

W.NR 1.3917
UNS K94100
AWS 091

Applicable Standards:

ASTM F30

A Nickel-Iron, low expansion alloy containing 42% Nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 300^oC (570^oF).

Applications include:

Semiconductor lead frames
Thermostat rods
Various glass to metal seals

Approximate Chemical Composition
Ni	42%
Fe	BAL

Properties
DENSITY	8.11 g/cm³	0.293 lb/in³
MELTING POINT	1435^oC	2615^oF
INFLECTION POINT	370°C	700°F
THERMAL CONDUCTIVITY	10.5 W/m•°C	72.8 btu•in/ft²•h°F
COEFFICIENT OF EXPANSION	5.3 µm/m °C (20 - 100°C) 4.5-6.5(µm/m °C (20 - 300°C)	2.9 x 10^-6 in/in °F (70 - 212°F) 2.5-3.6 x 10^-6 in/in °F (70 - 572°F)

HEAT TREATMENT (AFTER FORMING)
The Nilo alloys are usually used in the annealed condition (residual cold work distorts the coefficients of thermal expansion). Anneal at 850 - 1000°C (1560 - 1830°F)

HEAT TREATMENT (AFTER FORMING)

The Nilo alloys are usually used in the annealed condition
(residual cold work distorts the coefficients of thermal expansion).

Anneal at 850 - 1000°C (1560 - 1830°F)

CONDITION	APPROX TENSILE STRENGTH		APPROX SERVICE TEMPERATURE
Annealed	450 - 550 N/mm²	65 - 80 ksi	up to 300^oC	up to 570^oF
Hard Drawn	700 - 900 N/mm²	102 - 131 ksi	up to 300^oC	up to 570^oF

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Nilo 42^* Specification
*Trade name of Special Metals Group of Companies

Applicable Standards:

Applications include:

Nickel Wire

Shaped Profile Wire

Resistance Wire

Nilo 42* Specification*Trade name of Special Metals Group of Companies

Applicable Standards:

Applications include:

Nickel Wire

Shaped Profile Wire

Resistance Wire

Nilo 42^* Specification
*Trade name of Special Metals Group of Companies