Difference Between Nickel and Inconel

Nickel

Nickel 200 & Nickel 201 are commercially pure Nickel alloy with 99% minimum Nickel content. Alloy 200 is designated as UNS N02200 and Werkstoff Number 2.4066. It is used for the manufacture of processing equipment. Nickel Alloy 200 is particularly suitable to maintain product purity in handling foods, synthetic fibres and alkalies. Nickel 200 is normally limited to service at temperatures below 600° F. At higher temperatures Alloy 200 can suffer from graphitization which can result in severely compromised properties. Alloy 200 can be easily welded by conventional welding, brazing, and soldering processes with the exception of the oxyacetylene process.

Nickel Alloy Composition

Nickel alloy material properties

Compositions of some common nickel alloys

UNS No

Al

Cr

Co

Fe

Mo

Ni

Nb+Ta

Ti

W

N10276 15.5 5.5 16 57 3.8
N06600 15.5 8 76
N06625 21.5 9 61 3.6
N08800 21 46 32.5
N07718 0.5 19 18.5 3 52.5 5.1
N07090 1.5 19.5 16.5 60 2.5

Typical properties of some common nickel alloys

UNS No

Condition

UTS (MPa)

0.2 Proof Stress (MPa)

Elong. On 5cm (%)

Hardness (HB)

1000hr Ruptire Str. 750°C (MPa)

N10276

Annealed

790

415

50

184

N/a

N06600

Annealed

550-690

210-430

55-35

120-170

38

N06625

Annealed

930

520

45

180

160

N08800

Annealed

520-690

210-410

60-30

120-184

70 (700°C)

N07718

Age Hardened

1350

1180

17

382

170

Trade Names and Owners of Nickel Alloys

  • HASTELLOY is a registered trade name of Haynes Intl.
  • INCOLOY, INCONEL, MONEL and NIMONIC are registered trade names of the INCO family of companies.
  • INVAR is a registered trademark of Imphy S.A.
  • MU-METAL is a registered trademark of Telcon Metals Ltd
  • NICORROS and NICROFER are registered tradenames of Krupp UM GmbH

Inconel

Inconel® is a registered trademark (of Special Metals Corporation) referring to a family of austenitic nickel-chromium super alloys. Inconel® is a material that is specifically optimized for some of the toughest use conditions to be found in manufacturing while Titanium is a chemical element with symbol Ti and atomic number 22. It is a lustrous transition metal with a silver color, low density, and high strength.

Inconel Material Specification

  • Inconel 600
    Solid solution strengthened.
  • Inconel 601
  • Inconel 625
    Acid resistant, good weldability. The LCF version is typically used in bellows. Ideal for hardware and components in the power, aerospace and chemical processing industries. Offered in sheet, plate, bar and forgings.
  • Inconel 718
    Gamma double prime strengthened with good weldability. The preferred material for cryogenic storage tanks, turbines, downhole shafts and wellhead parts offered in sheet, plate and bar.
  • Inconel X750
    Commonly used for gas turbine components, including blades, seals and rotors.
  • Inconel 907
  • Inconel 909
  • Inconel 706
  • Inconel 617
  • Inconel 751
    Increased aluminium content for improved rupture strength in the 1600 °F range.
  • Inconel 792
    Increased aluminium content for improved high temperature corrosion properties, used especially in gas turbines.
  • Inconel 939
    Gamma prime strengthened to increase weldability.
  • Inconel 188
    Readily fabricated for commercial gas turbine and aerospace applications. Offered in sheet, plate and bar.
  • Inconel 690
    Low cobalt content for nuclear applications, and low resistivity.
  • Inconel 713C
    Precipitation hardenable nickel-chromium base cast alloy.
  • Inconel 230
    Inconel 230 Plate & Sheet mainly used by the power, aerospace, chemical processing and industrial heating industries, Aerospace Materials.

Inconel Composition

Inconel Element (% by mass)
Ni Cr Fe Mo Nb Co Mn Cu Al Ti Si C S P B
600 72.0 14.0–17.0 6.0–10.0 1.0 0.5 0.5 0.15 0.015
617 44.2–56.0 20.0–24.0 3.0 8.0–10.0 10.0–15.0 0.5 0.5 0.8–1.5 0.6 0.5 0.15 0.015 0.015 0.006
625 58.0 20.0–23.0 5.0 8.0–10.0 3.15–4.15 1.0 0.5 0.4 0.4 0.5 0.1 0.015 0.015
690 59.5 30 9.2 0.35 0.01 0.02 0.35 0.019 0.003
718 50.0–55.0 17.0–21.0 balance 2.8–3.3 4.75–5.5 1.0 0.35 0.2–0.8 0.65–1.15 0.3 0.35 0.08 0.015 0.015 0.006
X-750 70.0 14.0–17.0 5.0–9.0 0.7–1.2 1.0 1.0 0.5 0.4–1.0 2.25–2.75 0.5 0.08 0.01

Inconel alloys

Alloys of inconel include:

  • Inconel 600: Solid solution strengthened
  • Inconel 601
  • Inconel 625: Acid resistant, good weldability. The LCF version is typically used in bellows.
  • Inconel 690: Low cobalt content for nuclear applications, and low resistivity
  • Inconel 713C: Precipitation hardenable nickel-chromium base cast alloy
  • Inconel 718: Gamma double prime strengthened with good weldability
  • Inconel 751: Increased aluminium content for improved rupture strength in the 1600 °F range
  • Inconel 792: Increased aluminium content for improved high temperature corrosion properties, used especially in gas turbines
  • Inconel 939: Gamma prime strengthened to increase weldability

Inconel Equivalent Grades

STANDARD WERKSTOFF NR. UNS GOST AFNOR JIS BS EN OR
Inconel 600 2.4816 N06600 МНЖМц 28-2,5-1,5 NC15FE11M NCF 600 NA 13 NiCr15Fe ЭИ868
Inconel 601 2.4851 N06601 XH60BT NC23FeA NCF 601 NA 49 NiCr23Fe ЭИ868
Inconel 617 2.4663 N06617
Inconel 625 2.4856 N06625 ХН75МБТЮ NC22DNB4M NCF 625 NA 21 NiCr22Mo9Nb ЭИ602
Inconel 690 2.4642 N06690
Inconel 718 2.4668 N07718
Inconel 725 - N07725
Inconel X-750 2.4669 N07750

Inconel Melting Point, Density and Tensile Strength

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
600 8.47 g/cm3 1413 °C (2580 °F) Psi – 95,000 , MPa – 655 Psi – 45,000 , MPa – 310 40 %
601 8.1 g/cm3 1411 °C (2571 °F) Psi – 80,000 , MPa – 550 Psi – 30,000 , MPa – 205 30 %
617 8.3g/cm³ 1363°C ≥ 485 MPa ≥ 275 MPa 25 %
625 8.4 g/cm3 1350 °C (2460 °F) Psi – 135,000 , MPa – 930 Psi – 75,000 , MPa – 517 42.5 %
690 8.3g/cm³ 1363°C ≥ 485 MPa ≥ 275 MPa 25 %
718 8.2 g/cm3 1350 °C (2460 °F) Psi – 135,000 , MPa – 930 Psi – 70,000 , MPa – 482 45 %
725 8.31 g/cm3 1271°C-1343 °C 1137 MPa 827 MPa 20 %
X-750 8.28 g/cm3 1430°C 1267 MPa 868 MPa 25 %

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