Properties of Paliney® 8

Paliney® 8, a complex, heat-treatable alloy, was developed to fill the need for a lower cost contact alloy of nickel-chromium resistance wires with strength, hardness, and wear resistance similar to that of Paliney® 7. The advantages that this alloy offers are as follows: the metal cost is substantially less than that of Paliney®  7; Paliney® 8 provides low wear, and stable contact resistance with low noise when used as a sliding contact for nickel-chromium resistance wire alloys; it has good corrosion resistance and shelf life; it has high strength and hardness.

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Properties of Paliney 8 Annealed Ductile
Heat-Treated
Heat-Treated*
(Age-Hardened)
Resistivity, normal, ohm-cmf 180 150 150
Microhm cm 29.9 24.9 24.9
Conductivity, % IACS, nominal 5.8 6.9 6.9
Density, grams/cc, nominal 10.8 10.8 10.8
Dwt./cu. in., nominal 114 114 114
Solidus Temperature      
F, nominal 1780 1780 1780
C, nominal 970 970 970
Coefficient  of Linear Expansion      
F(70 - 212F) nominal 7.5x10(-6) 7.5x10(-6) 7.5x10(-6)
C(20 - 100C) nominal 13.5x10(-6) 13.5x10(-6) 13.5x10(-6)
Thermal EMF Versus Platinum - (0 - 100C), uv/C, nominal -18 -18 -18
Fatigue strength (rotating - bending) at 10(8) cycles, psi - 40,000 40,000
Megapascals - 275 275
Modulus of Elasticity, psi nominal 16x10(6) 16x10(6) 16x10(6)
Megapascals 110x10(3) 110x10(3) 110x10(3)
Proportional Limit, psi, nominal 70,000 125,000 155,000
Megapascals 480 860 1070
Ultimate Tensile Strength, psi      
Wire .005-.020 dia., Rolled Shapes 100,000-125,000 150,000-195,000 190,000-240,000
Strip .003-.015 thick 100,000-125,000 140,000-180,000 170,000-230,000
Elongation, % in 2", min.      
Wire .005 - .020 dia. 20 min 5 min 1 min
Strip .003 - .015 thick 15 min 4 min 1 min
Knoop Hardness, (100-gram load)      
(50-gram under .005 thick)      
Wire .003 - .060 dia., Rolled Shapes 200 - 260 300 - 360 360 – 450
Strip .003 - .015 thick 200 - 260 300 - 360 340 – 420

*Forming or bending is not recommended for this "temper" of alloy.

The information contained in this Data Sheet is intended to assist you in the use of this product.  It is not intended to and does not create any warranties, express or implied, including any warranty of merchantability or fitness for a particular application.  The user should determine the suitability of this material for each application.  Data is subject to change without notice.

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