Difference Between Nickel and Inconel

Nickel Vs 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)
Inconel	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 %