TWR’s Low Phosphorus Electroless Nickel is designed by the manufacturer to provide a high quality electroless nickel deposit from a highly stable plating solution. The bath plates at approximately 0.7-1.0 mil per hour, depositing nickel phosphorus coating that provides solderability, hardness, and engineering properties. The deposit hardness as plated, without heat treatind is 750-850HK100. If the deposit is heat treated, particles of Ni3P will precipitate and the coating crystallizes, resulting in a significant increase in the hardness and wear resistance.
Low Phosphorus Electroless Nickel Specifications
| Nickel Content | 97%-99% |
| Phosphorous Content | 1%‑1% |
| Internal Stress | Slightly Tensile |
| Tensile Strength | 200-400 MPa |
| Elongation | .5-1.5% |
| Modulus of Elasticity | 55-65 GPa (2.8 X 108 psi) |
| Density | 8.6-8.8 g/cm3 |
| Melting Point | 1250-1360oC (2282-2480 oF) |
| Adhesion Strength | 140 to 400 Mpa (20-60 kpsi) depending on substrate |
| Hardness | After Heat Treatment – 900-1100 HK100 (67‑70+ Rockwell C) As Plated – 750-850 HK100 (61-65 Rockwell C) |
| Electrical Resistance | 20-40 uohms/cm2 |
| Thermal Conductivity | 0.015 cal/cm/sec/ oC |
| Coefficient of Thermal Expansion | 18-22 um/m/oC |
| Magnetic Properties | Magnetic |
| Taber Wear Resistance | 7-13 (mg/1000 cycles-CS-10 Wheel, 100g load) |
RoHS & ELV requirements for cadmium <100ppm, no mercury and lead
*All statements, technical information and recommendations contained herein are based on information and tests we believe to be reliable. The accuracy or completeness thereof is not guaranteed. Since conditions of use are outside our control, user shall, before using, determine the suitability of the product for his intended use and user assumes all risk and liability whatsoever in connection therewith.
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