Data Sheet: Nickel-Copper Alloys

Learn more about each nickel speciality alloy

Nickel Copper Alloy Grade JLC400 JLC500

Nickel-Copper Alloys: Wire / Strip / Bar

JLC 400 is a nickel-copper, solid-solution alloy that offers good strength and toughness over a wide temperature range, including sub-zero temperatures. It provides excellent corrosion resistance and is also resistant to stress corrosion cracking and pitting in most industrial and fresh waters. As a result it is widely used in marine and chemical industries.

JLC 500 is a precipitation hardened alloy. It is essentially similar to JLC 400, but with minor additions of aluminum and titanium to the nickel-copper matrix. The resulting precipitates of Ni3(Ti, Al) impart high strength and hardness to the alloy. Another attractive property of this alloy is that it has low magnetic permeability and is practically non-magnetic, even at very low temperatures. As a result of these highly desirable properties, this alloy finds use in applications that demand not only the excellent corrosion resistance offered by JLC 400, but also that require increased strength, hardness, and non-magnetic characteristics.


Alloy British Standard Werkstoff Nr UNS designation
JLC 400 BS 3072-3076 (NA13) 2.4360 N04400
JLC 500 BS 3072-3076 (NA18) 2.4375 N05500

Nominal Chemical Composition (%)

Alloy Ni Mn Fe Si Cu C Al Ti
JLC 400 Min 63 Max 1.25 1.0- 2.5 Max 0.50 28-34 Max 0.15 Max 0.50 Max 0.20
JLC 500 Min 63 Max 1.50 Max 2.0 Max 0.50 27-33 Max 0.15 2.30-3.15 0.30-0.85

Physical Properties (at room temperature)

Alloy Density ThermalĀ 
Thermal Linear
Expansion Coeff.
(20-95 °C)
Electrical Resistivity
at 20°C
g/cm³ W/m K 10-6/K µΩ-cm
JLC 400 8.80 21.8 13.9 51
JLC 500 8.45 17.5 17.5 60

Mechanical Properties (for cold drawn annealed wire)

Alloy Tensile strength
% at L0=100 mm
Min Max Min Max
JLC 400 450 650 20 30
JLC 500 890 950 20 30

Size Range

Form Dia Width Thickness
mm mm mm
Wire 0.12-10.0 - -
Strip - 8-100 ≥ 0.10
Bar 12.0-60.0 - -


JLC 400 typical applications include springs, valves, pumps, propeller shafts, electrical and electronic components, to name a few. It is used as wire mesh and filters for chemical and pertrochemical industry, for connecting braids of heating elements, and for mechanical applications in cold-headed parts and fasteners. Another application is for welding core wires and MIG/TIG wires. This alloy is widely used in lamp industry as a fuse wire in lead-in-wires for lamps.

JLC 500 finds use in several industries such as chemical, oil and gas, medical, and marine. Typical applications include springs, valves, fasteners, pumps shafts, oil-well drilling collars, surgical blades, non-magnetic housings, sensors, and electronic components, etc.

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Related Links


Nickel Alloys

Standard Nickel Grades:

Nickel-Manganese Alloys:

Nickel-Copper Alloys:

Welding Alloys Heating & Resistance 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 50 (Ni50Fe)
Controlled Expansion Alloys
Dumet Wires
Clad Wires
  • Copper-Clad FeNi42
  • Copper-Clad FeNi60
  • Iron-Clad Nickel
  • Nickel-Clad Iron