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High Nickel Alloys – Properties, Types, Material Grades, Composition

Ample Alloys
High Nickel Alloys – Properties, Types, Material Grades, Composition

High nickel alloys are used extensively because of their high-temperature strength, corrosion resistance, and special magnetic & thermal expansion properties. Nickel can alloy with many other materials such as molybdenum, chromium, copper, and iron. This allows for a wide variety of alloys that demonstrate unique properties such as low coefficient of expansion and shape memory.

Nickel Alloy Trade Names:

  1. 99% + pure Nickel:
    1. Nickel 200 – Nickel 99.2
    2. Nickel 201 – Nickel 201, LC Nickel 99.2
  2. Nickel-Copper:
    1. Monel 400 – Nickelvac 400, Nicorros 400
    2. Monel R405
    3. Monel K500
  3. Nickel-Chromium-Iron:
    1. Inconel 600 – Nickelvac 600, Ferrochronin 600
    2. Inconel 601 – Pyromet 601, Nicrofer 601
    3. Inconel 625 – Chornin 625, Altemp 625, Nickelvac 625, Haynes 625 Nicrofer 6020
    4. Inconel 718 – Nicrofer 5219, Alvac 718, Haynes 718, Altemp 718
    5. Inconel X750 – Haynes X750, Pyromet X750, NickelvacX750, Nicorros 7016
    6. Incoloy 800 – Ferrochronin 800, Nickelvac 800, Nicrofer 3220
    7. Incoloy 825 – Nickelvac 825, Nicrofer 4241
  4. Nickel-Chromium-Cobalt:
    1. Inconel 617 – Nicrofer 617
    2. Multimet N155
  5. Chromium-Molybdenum-Tungsten:
    1. Hastelloy C22 – Inconel 22, Nicrofer 5621
  6. Nickel-Chromium-Molybdenum:
    1. Hastelloy C276 – Nickelvac HC-276, Inconel 276, Nicrofer 5716
    2. Hastelloy B2 – Nimofer 6928
  7. Nickel-Chromium-Iron-Molybdenum:
    1. Hastelloy X – Nickelvac HX, Nicrofer 4722, Altemp HX, Inconel HX
  8. Nickel-Cobalt-Molybdenum:
    1. Vascomax C250 – Maraging C250, Maraging 250
    2. Vascomax 300 – Maraging 300, Maraging C300, and Vascomax C300
  9. Nickel-Cobalt-Steel:
    1. Vascomax C350 – Maraging C350
  10. Nickel-Chromium:
    1. Rene 41
  11. Nickel-Cobalt:
    1. Waspaloy 25

Ample Alloys offers nickel alloys in a variety of form factors which commonly include:

Industrial Flanges:

Grade C22Grade C276Grade 400Grade K500Grade 200Grade 201Grade 625Grade 690Grade 718Grade 825Grade 800Grade 660Grade 2Grade 5Grade 90/10Grade 70/30

Socket Weld Fittings:

Grade C22Grade C276Grade 400Grade K500Grade 200Grade 201Grade 625Grade 690Grade 718Grade 825Grade 800Grade 660Grade 2Grade 5Grade 90/10Grade 70/30

Threaded Fittings:

Grade C22Grade C276Grade 400Grade K500Grade 200Grade 201Grade 625Grade 690Grade 718Grade 825Grade 800Grade 660Grade 2Grade 5Grade 90/10Grade 70/30

Buttweld Fittings:

Grade C22Grade C276Grade 400Grade K500Grade 200Grade 201Grade 625Grade 690Grade 718Grade 825Grade 800Grade 660Grade 2Grade 5Grade 90/10Grade 70/30

Nickel Alloys Nominal Composition:

Alloy name UNS % Ni % Cr % Fe % Mo % Cu % Co % Other
200 N02200 99 min – – – – – –
400 N04400 65 32 – – – – –
B-2 N10665 68 – 2 28 – – –
70-30 N06008 70 30 – – – – –
C-Grade N06006 60 16 bal – – – –
600 N06600 76 16 8 – – – –
601 N06601 60 23 bal – – – Al – 1.3
X-750 N07750 70 15 7 – – –

Ti – 2.5

Al – 0.7

Nb – 1.0
825 N08825 42 21 25 3 2 – –
800 N08800 32 21 45 – – – W – 3.5
C-276 N10276 bal 15 5 16 – – –
C-22 N06022 bal 21 4 13 – – –
C-2000 N06200 bal 23 3 max 16 1.6 – –
686 N06686 bal 21 2 max 16 – – W – 3.7
Invar K93600 36 – 64 – – – –
G-3 N06985 bal 22 20 7 2 – –
59 N06059 bal 23 1.5 max 16 – – –
617 N06617 44.5 min 22 3 max 9 – 12 –
HR-160 N12160 bal 28 3.5 max – – 30 Si – 2.75
Nitinol N01555 55 – – – – – Ti – 45
Alloy Type UNS %Cr %Ni %Mo %Cu %Fe –
800H N08810 20 32 – – bal Stainless steel with excellent high-temperature strength and useful resistance to high-temperature oxidation.
625 N06625 21 bal 9 – 3 Well-known nickel alloy with excellent high-temperature strength and outstanding aqueous corrosion resistance.
C-276 N10276 15 bal 16 – 5 One of the best-known nickel alloys with excellent corrosion resistance to reducing acids.
600 N06600 16 76 – – 8 Useful resistance to high-temperature corrosion and caustic solutions.
Alloy 400 N04400 – 65 – 32 – Most common uses are in marine and chemical processing.
254 SMO S31254 20 18 6.1 – bal Corrosion resistance similar to 2507, also possessing useful corrosion resistance to seawater.
Alloy 20 N08020 20 33 2.1 3.2 bal Cu bearing stainless steel with useful corrosion resistance to all concentrations of sulphuric acid.
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