Super Alloy Nickelvac K-500™ (UNS N05500)

Topics Covered

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


Introduction

Super alloys contain many elements in different combinations so as to achieve a desired result. They have the ability to function at very high temperatures and under severe mechanical stress, and also where high surface stability is required. They have good creep and oxidation resistance. There are three groups of alloys, namely cobalt-based, nickel-based, and iron-based alloys.

Nickelvac K-500™ is an age-hardenable version of Monel 400 alloy. It has high strength and sea water corrosion resistance. The following datasheet gives more details about Nickelvac K-500™.

Chemical Composition

The following table shows the chemical composition of Nickelvac K-500™.

Element Content (%)
Nickel, Ni 66
Copper, Cu 29
Aluminum, Al 2.7
Iron, Fe 1
Manganese, Mn 0.7
Tungsten, W 0.6
Silicon, Si 0.25
Carbon, C 0.1
Sulfur, S 0.01

Physical Properties

The physical properties of Nickelvac K-500™ are outlined in the following table.

Properties Metric Imperial
Density 8.45 g/cm³ 0.305 lb/in³
Melting point 1338°C 2440°F

Mechanical Properties

The mechanical properties of Nickelvac K-500™ are given in the following table.

Properties Metric Imperial
Tensile strength 1000 MPa 145000 psi
Yield strength (at strain 0.200%) 655 MPa 95000 psi
Elongation at break 22% 22%
Reduction of area 40% 40%
Hardness, Rockwell C 27 27

Other Designations

Other designations that are equivalent to Nickelvac K-500™ include:

  • AMS 4676
  • ASTM F467
  • ASTM F468
  • DIN 2.4375
  • MIL N-24549
  • QQ N286

Fabrication and Heat Treatment

Machinability

Nickelvac K-500™ is machined in the annealed condition.

Forming

Nickelvac K-500™ can be formed using standard methods in the annealed condition.

Welding

Nickelvac K-500™ is welded using all conventional methods in the annealed condition. After this process, stress-relief annealing is performed for the finished weldment.

Heat Treatment

Nickelvac K-500™ is heat treated by annealing. It can also be precipitation-hardened by performing aging heat treatment.

Forging

Nickelvac K-500™ is forged at 1038 to 1149°C (1900 to 2100°F) followed by quenching in water.

Hot Working

Nickelvac K-500™ is hot worked at 872 to 1149°C (1600 to 2100°F) followed by quenching in water. It should not be cooled below 872°C (1600°F).

Cold Working

Nickelvac K-500™ can be cold worked using standard methods

Annealing

Nickelvac K-500™ is annealed at 1038°C (1900°F) followed by quenching in water.

Aging

Annealed or slightly cold-worked material is age-hardened at 608°C (1125°F ) for 16 h followed by cooling in a furnace. Severely cold-worked material is aged at 538°C (1000°F) for 6 h followed by cooling in a furnace.

Applications

Super alloy Nickelvac K-500™ is used in impellers, sea water pump shafts, and oil well industry for valve trim and other components.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this article?

Leave your feedback
Your comment type
Submit