Keywords: Nickel base alloys, nickel base alloy, Ni-based alloys, Ni-based

Nickel and nickel-base alloys are vitally important to modern industry because of their ability to withstand a wide variety of severe operating conditions involving corrosive environments, high temperatures, high stresses, and combinations of these factors.

There are several reasons for these capabilities. Pure nickel is ductile and tough because it possesses a face-centered cube crystal structure up to its melting point. Nickel has good resistance to corrosion in the normal atmosphere, in natural freshwaters and in deaerated non-oxidizing acids, and it has excellent resistance to corrosion by caustic alkalis.

Therefore, nickel offers very useful corrosion resistance itself and provides an excellent base for developing specialized alloys. Intermetallic phases can be formed between nickel and some of its alloying element: this enables the formulation of very high strength alloys for both low- and high-temperature service.

Name	Int. standard	ASTM Standard	Bristish Standard	DIN	UNS
Pure Nickel	Nickel 200	ASTM B160/161/162/163	NA 11	2. 4066	N02200
	Nickel 201	B160/161/162/163	NA 12	2. 4068	N02201
Monel Alloy	Monel 30C	ASTM A494
	Monel 400	ASTM B127/163/164/165	NA 13	2. 4360	N04400
	Monel R405	ASTM B164
	Monel K500	B8651 SAE AMS 4676E	NA 18	2. 4375	N05500
Inconel	Inconel 600	ASTM   B163/166/168		2. 4816	N06600
	Inconel 625/625LCF	ASTM  B443/444/446/564		2. 4856	N06625
	Inconel 690	UNS NO6690		2. 4642	N06690
	Inconel 718	B637/AMS 5662/AMS5663		2. 4668	N07718
	Inconel X750	B637		2. 4669	N07750
	6021
Incoloy	Incoloy 800	B163/B407/B408/B409	NA 15	1. 4876	N08800
	Incoloy 800H	B409/B407/B163/B408		1. 4558	N08810
	Incoloy 800HT				N08811
	Incoloy 825	B425/163/423/424	NA 16	2. 4858	N08825
	Carpenter20/20cb	B463/464		2. 4660	N08020
Hastelloy	Hastelloy B				N10001
	Hastelloy B-2	B333/622		2. 4617	N10665
	Hastelloy C-4	B575/622/574		2. 4610	N06455
	Hastelloy C-22	B575/B622/B574		2. 4602	N06022
	Hastelloy C-276	B619/622/575/574		2. 4819	N10276
	Hastelloy G-3	B582/622/581
	Hastelloy G-30				N06030
	Illium B