NPS Nickel Plated Pteel Wire is a low carbon steel wire electroplated with nickel. It is used as the inner- lead component for lead-in-wires used in incadescent bulbs, fluoroscent tubes, halgen lamps, HID lamps, automotive, and other lamps. It is also used as a third wire to support the anode ring used in fluorescent tube lamps. NPS is also used for making music wire and for other applications that require corrosion resistance.
Forms of Supply
As plated and annealed wire
Matt Finish or Bright Finish of wires are available as per customer requirement
| Wire | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|
| Regular grade | 0.06 max | 0.25 - 0.50 | 0.10 max | 0.04 max | 0.05 max | Balance |
| Aluminum killed | 0.05 max | 0.20-0.40 | 0.10 max | 0.04 max | 0.04 max | Balance |
| Nickel layer | High purity Nickel | |||||
Note: Other standard grades such as AISI 1006, AISI 1008, etc. are also available for core wire.
Thickness of Nickel layer
Nominal 2-4% by weight in thickness for NPS is used in lead wires for lighting applications. Higher nickel plating thickness (like 4%, 8%, 12% ) can be manufactured as per customer requirement. The nickel coating has uniform adhesion over the full length of the steel core wire.
| Diameter of wire | Thickness of Nickel plating | Application |
|---|---|---|
| mm | % by weight | |
| 0.40 - 0.60 | 2.0 - 4.0 | For Lead-in-Wires |
| 0.70 - 0.90 | 2.0 - 3.0 | For Lead-in-Wires |
| 0.80 - 2.50 | 1.0 - 3.0 | For Lead-in-Wires |
| 0.80 - 1.50 | 8.0 - 12.0 | For redraw |
| Wire Type | Tensile strength (N/mm²) | Elongation % at L0=100 mm |
|
|---|---|---|---|
| Min | Max | ||
| Annealed (soft) | 300 | 480 | ≥ 15 |
| As drawn | 700 | 1000 | ≤ 5 |
| Size in mm | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1.0-2.50 |
|---|---|---|---|---|---|---|---|
| Tolerance (+/-) | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.02 |
The ovality (the difference between the largest and smallest diameter in a section) is less than half the tolerance in the diameter.
Packaging
In standard DIN spools or corrugated drums / barrels (14" outer dia x 10" height)
| Diameter of wire | Recommneded Spool Type |
Weight per spool |
|---|---|---|
| mm | kg | |
| 0.40 - 0.60 | DIN 160 | 5 - 7 |
| DIN 200 | 6 - 8 | |
| DIN 250 | 12 - 20 | |
| Corrugated Drum | 12 - 20 | |
| 0.70 - 0.90 | DIN 200 | 6 - 8 |
| DIN 250 | 15 - 22 | |
| Corrugated Drum | 15 - 25 | |
| 1.0 - 2.50 | Coils | 20 - 50 |
| DIN 355 | 50 - 70 |
Thicker size wires are available in coils or on cardboard rings.
Each spool is individually shrink wrapped and put in carboard box for maximum protection against oxidation. It is advisable to use the wire within six months from the date of manufacturing for best performance.
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