Data Sheet: High Temperature Alloys


Learn more about each nickel speciality alloy

  • Nickel-Chromium-Iron High Temperature JLC 800 Series Alloys

Nickel-Chromium-Iron Alloys: JLC 800 series

JLC 800 offers corrosion resistance, heat resistance, and strength under high temperature conditions up to 600 °C. It is also resistant to stress corrosion cracking, oxidation, carburization, and sulfidation at high temperatures. It is readily formable, weldable, and machinable. The alloy maintains a stable austenitic structure during prolonged exposure to high temperatures.

JLC 810 is similar to JLC 800, but with a slightly higher carbon content and an optimized grain size. The higher carbon helps with better creep and stress rupture properties. This alloy is prefered over JLC 800 when service temperatures range between 600-800 °C.

JLC 825 is a nickel-chromium-iron alloy with molybdenum, copper, and titanium additions. It offers excellent resistance to general and localized corrosion in many different environments. It is resistant against pitting, crevice corrosion, chloride-ion stress corrosion cracking, and reducing environments containing aggressive sulfuric and phosphoric acids.

Standards

Alloy British Standard Werkstoff Nr ASTM UNS designation
JLC 800 BS 3072-3076 (NA15) 1.4876 B 163 N08800
JLC 810 - 1.4876 - N08810
JLC 825 BS 3072-3074, 3076 (NA16) 2.4858 B 163 N08825

Nominal Chemical Composition (%)

Alloy JLC 800 JLC 810 JLC 825
Ni 30-35 30-35 38-46
Mn Max 1.50 Max 1.50 Max 1.00
Fe Balance Balance Min 22.0
Si Max 1.0 Max 1.0 Max 0.5
Cr 19-23 19-23 19.5-23.5
C Max 0.10 0.05-0.10 Max 0.05
Al 0.15-0.60 0.15-0.60 Max 0.20
S Max 0.015 Max 0.015 Max 0.03
Ti 0.15-0.60 0.15-0.60 0.60-1.20
Mo - - 2.5-3.5
Cu Max 0.75 Max 0.75 1.5-3.0

Note: Other Grades of nickel-chromium-iron alloys are also available.

Nominal Physical & Electrical Properties (at room temperature for annealed wire)

Alloy Density Thermal Conductivity Electrical Resistivity at 20°C
g/cm³ W/mK µΩ-cm
JLC 800 7.94 11.5 99
JLC 825 8.14 11.1 113

Mechanical Properties (at room temperature for annealed wire)

Alloy Tensile strength
N/mm²
Elongation
% at L0=100 mm
Nominal dia in mm
Min Max Min Max
JLC 800 600 800 25 40
JLC 825 500 700 25 40

Size Range

Form Dia Width Thickness
mm mm mm
Wire 0.12 - 8.0 - -
Strip - 0.4 - 100 ≥ 0.10
Ribbon - 0.2 - 0.5 2.0 - 4.0

Applications

JLC 800 is used to make heat-treating equipment like baskets, trays, fixtures, etc. Wire mesh made of this alloys is used in chemical and petrochemical industries. It also finds use in nuclear applications. This alloy is also used for sheathing of electric heating elements in domestic appliances.

JLC 825 is used in a variety of applications. It is used in chemical processing plants, oil and gas recovery, acid production, pickling operations equipment, etc.

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