Data Sheet: Lamp Components And Alloys


Learn more about each nickel speciality alloy

  • Nickel Plated Copper-Tin Alloys Alloys

Copper-Tin Alloys: Bare Wire / Nickel Plated Wire

CuSn CuSn Alloy is pure electrolytic copper-tin alloy in bare condition. Bare wire is used as the outer lead part of Lead-In- Wires of fluorescent tubes, automotive, and other lamps.

NPCuSn NPCuSn Alloy is pure electrolytic copper-tin alloy, uniformly coated with nickel by electrolytic plating method. Nickel plated copper-tin alloy wire is used as the inner lead part of Lead-In-Wires for GLS, fluorescent tubes, automotive, sodium vapor lamps, mercury vapor lamps, etc.

Forms of Supply

As plated and annealed wire
Matt Finish or Bright Finish of wires are available as per the requirement.

Nominal Chemical Composition (%)

Core Sn P Cu
Regular grade 0.5 - 1.5 Max 0.04 Balance
Nickel layer High purity Nickel

Thickness of Nickel layer

Nickel layer thickness is minimum 2% by weight and typically ranges from 2-4% by weight. Higher Nickel plating thickness (like 4%, 8%, 12%) can be manufactured per the customer requirements. The nickel coating has uniform adhesion over the full length of the CuSn 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

Mechanical Properties

Wire Type Tensile strength (N/mm²) Elongation
% at L0=100 mm
Min Max
Annealed 250 360 ≥ 15
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 (difference between the largest and smallest diameter in a section) is less than half the tolerance in the diameter.

Packaging (in standard DIN spools)

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
0.70 - 0.90 DIN 200 6 - 8
DIN 250 15 - 22
1.0 - 2.50 Coils 20 - 50
DIN 355 50 - 70

Thicker size wires are available in coils or on cardboard rings.

Each spool of wire is individually shrink-packaged and put in a cardboard 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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Related Links

Products

Nickel Alloys

Standard Nickel Grades:

Nickel-Manganese Alloys:

Nickel-Copper Alloys:

Welding Alloys Heating & Resistance

Nickel-Chromium Alloys:

Iron-Chrome-Aluminum Alloys

Nickel Chrome Iron Alloys Low Resistance & Shunt Alloys

Cu-Ni Low Resistance Alloys:

Cu-Mn-Ni Alloys:

Lamp Components & Alloys Thermocouple Alloys

Thermocouple Grade Alloys:

Extension and Compensating Grade Alloys:

Automotive Alloys

Alloys for Earth and Central Electrodes:

  • NiSi
  • NiCr15Fe
  • NiCr5SiMn
  • NiCr2SiMn
  • NiSi1Al1Y
Soft Magnetic Alloys

Temperature Compensating Alloys:

  • Ni30Fe
  • Ni31Fe
  • Ni32Fe

High Permeability Alloys:

  • SMA 48 (Ni48Fe)
  • SMA 50 (Ni50Fe)
  • SMA 80 (Ni80Mo5Fe)
Controlled Expansion Alloys
Dumet Wires
Clad Wires
  • Copper-Clad FeNi42
  • Copper-Clad FeNi60
  • Iron-Clad Nickel
  • Nickel-Clad Iron