ELECTROLESS NICKEL TECHNICAL DATA

Property

Low-Phosphorus

Mid-Phosphorus

High-Phosphorus

Composition

3 to 4% P, balance Ni

6 to 9% P, balance Ni

11 to 12% P, balance Ni

Structure

Micro- crystalline

Mixed crystalline and amorphous

Amorphous

Internal Stress

-10 MPa

+40 MPa

-20 MPa

Final Melting Point

1275º C

1000º C

880ºC

Density

8.6 g/cm3

8.1 g/cm3

7.8 g/cm3

Coefficient of Thermal Expansion

12.4 m m/m-º C

13 m m/m-º C

12.0 m m/m-º C

Electrical Resistivity

30 mW - cm

75 mW -cm

100 mW - cm

Thermal Conductivity

0.6 Wcm-K

0.05 W/cm-K

0.08 W/cm-K

Specific Heat

1,000 J/kg-K

ND

460 J/kg-K

Magnetic Coercivity

10,000 A/m

110 A/m

0

Tensile Strength

300 MPa

900 MPa

800 MPa

Ductility

0.70%

0.70%

1.50%

Modulus of Elasticity

130 GPa

100-120 GPa

170 GPa

Hardness, as deposited

700 HV100

600 HV100

530 HV100

Hardness, heat treated

960 HV100

1000 HV100

1050 HV100

Coefficient of Friction

ND

0.38

0.45

Taber Wear Index, as deposited

11 mg/1,000 cycles

16 mg/1,000 cycles

19 mg/1,000 cycles

Taber Wear Index, heat treated

9 mg/1,000 cycles

12 mg/1,000 cycles

12 mg/1,000 cycles

Corrosion Protection, salt fog resistance

24 hours

96 hours

1,000 hours