89Ni 11P

PROPERTY	@300K	UNITS	REFERENCE
Density	7.92	G/cm³	13.1.A
Specific Heat	0.114	Cal/g-k	13.2.A
Thermal conductivity	0.105-0.013	Cal/cm-s-k	13.3.A
Thermal Expansion	13-14.4	1/K	13.4.A
Melting Point	1153	K	13.5.A
Resistivity 1	52-68x10^-6	Ohm-cm	13.6.A-C
TCR		Ppm/K
Young’s Modulus 2	2840	ksi	13.8.A
Poisson’s Ratio		------
Yield Strength	3	psi
Ult Tensile strength	100,000 3	psi	13.11.A-B
Elongation at break	1.0 3	%	13.12.A-B
Hardness 4	600	HK100	13.13.A-C

1: Resistivity for 2.2% P material = 30 micro-ohm-cm while a 13% P has a resistivity of 110. Heating a 7% P material deposited at 60C reportedly reduces resistivity from 72 to 20 micro-ohm-cm.

2: Data listed is the reduced Young’s modulus from a bulge test.

3: Data is from a bulge test, which is a biaxial loading condition. No permanent deformation is noted and therefore no yield strength is listed. Heat treatment in the range of 400-800C can significantly improve ductility and strength.

4: Hardness increases to about 1000 when heat-treated at 400C for about 30 minutes. Heat treatment at higher temperatures reduces hardness to as-deposited hardness levels.

Engineering Materials

Revised: February 17, 2004