Nicrofer 5716 Nickel Chromium Molybdenum Super Alloy (UNS N10276)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
     Machinability
     Forming
     Welding
     Heat Treatment
     Hot Working
     Cold Working
     Annealing
Other Designations
Applications

Introduction

Nicrofer 5716 alloy is a nickel-chromium-molybdenum alloy containing tungsten and low amounts of carbon and silicon. The alloy is characterized by excellent resistance to stress corrosion cracking, crevice corrosion and pitting.

The following datasheet will explain in detail about nicrofer 5716 alloy.

Chemical Composition

The chemical composition of nicrofer 5716 alloy is outlined in the following table.

Element Content (%)
Molybdenum, Mo 15 - 17
Chromium, Cr 14.5 - 16.5
Iron, Fe 4-7
Tungsten, W 3 - 4.5
Cobalt, Co 2.5
Manganese, Mn 1
Vanadium, V 0.35
Silicon, Si 0.08
Phosphorus, P 0.03
Sulfur, S 0.03
Carbon, C 0.02
Nickel, Ni Balance

Physical Properties

The following table shows the physical properties of nicrofer 5716 alloy.

Properties Metric Imperial
Density 8.9 g/cm3 0.322 lb/in3
Melting point 1325-1370°C 2410-2500°F

Mechanical Properties

The mechanical properties of nicrofer 5716 alloy are displayed in the following table.

Properties Metric Imperial
Tensile strength 48 MPa 730 ksi
Yield strength 45 MPa 330 ksi
Elongation at break 106% 106%
Brinell hardness 30 30

Thermal Properties

The thermal properties of nicrofer 5716 alloy are given in the following table.

Properties Metric Imperial
Thermal expansion co-efficient (@100°C/212°F) 11.7 µm/m°C 7.3 µin/in°F
Thermal conductivity (@20°C/68°F) 10.6 W/mK 73 BTU.in/hrft².°F

Fabrication and Heat Treatment

Machinability

Nicrofer 5716 alloy has good machinability.

Forming

The alloy can be formed by all conventional means.

Welding

The alloy can be welded using all conventional welding techniques, except that excess heat should be avoided.

Heat Treatment

Nicrofer 5716 alloy is heat-treated at 1121°C (2050°F) followed by rapid quenching.

Hot Working

The alloy can be hot formed or extruded followed by solution heat treating.

Cold Working

Cold working of nicrofer 5716 alloy can be performed through conventional means.

Annealing

The alloy can be annealed in the solution treated condition at 1121°C (2050°F).

Other Designations

Other designations that are equivalent to nicrofer 5716 alloy include the following:

  • ASTM B366
  • ASTM B574
  • ASTM B575
  • ASTM B619
  • ASTM B622
  • ASTM B626
  • ASTM F467
  • ASTM F468
  • DIN 2.4819

Applications

The following are the list of applications of nicrofer 5716 alloy:

  • Chemical process equipment
  • Catalytic systems

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