Corrosion resistant alloy

Corrosion-resistant alloy is a kind of metal anti-corrosion material, which is a kind of special alloy, but it cannot be used in fluorine-containing environment. Compared with non-metallic anti-corrosion materials, metal anti-corrosion materials mainly include iron-based alloys (corrosion-resistant stainless steel); nickel-based alloys (Ni-Cr alloys, Ni-Cr-Mo alloys, Ni-Cu alloys, etc.); active metals .

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1. Corrosion-resistant stainless steel

Mainly refers to the ordinary 300 series stainless steel 304 that is resistant to corrosion by the atmosphere or seawater, the most common corrosion-resistant alloy Hastelloy 316L, 317L, etc.; austenitic stainless steel 904L, 254SMO with strong corrosion resistance; dual-phase steel 2205, 2507 etc.; corrosion-resistant alloy 20 alloy containing CU, etc.

2. Nickel-based corrosion-resistant alloys

Mainly Hastelloy and NI-CU alloys, etc. Since the metal NI itself is a face-centered cubic structure, the crystallographic stability enables it to accommodate more alloying elements than FE, such as CR, MO, etc., so as to achieve resistance At the same time, nickel itself has certain anti-corrosion ability, especially the ability to resist stress corrosion caused by chloride ions. In strong reducing corrosive environments, complex mixed acid environments, and solutions containing halogen ions, nickel-based corrosion-resistant alloys represented by Hastelloy have absolute advantages over iron-based stainless steels.

3. Active Metals

Typical representatives with good corrosion resistance are TI; ZR; TA, etc. The most typical representative is TI; titanium has a wide range of applications, mainly used in some corrosive environments that stainless steel cannot adapt to.

Principle of corrosion resistance of titanium materials: In an oxidizing atmosphere, a dense oxide film is formed to provide protection; therefore, it is generally not used in corrosive environments with strong reducibility or high sealing properties. At the same time, the application temperature of titanium materials is generally less than 300 degrees Celsius. It is important to note that none of the active metals can be used in fluorine-containing environments.

ASTM	UNS	W-Nr.	JIS	KS		Element	DIN EN/DIN
Incoloy800	N08800	1.4876	NCF800/2B	NCF800	GH20	0Cr20Ni32AlTi	X10NiCrAlTi32-20
Incoloy800H	N08810	1.4958	NCF800H			1Cr20Ni32AlTi	X10NiCrAlTi32-20
Incoloy800HT	N08811	1.4959				0Cr25Ni35AlTi
Incoloy825	N08825	2.4858	NCF825	NCF825		0Cr21Ni42Mo3Cu2Ti	NiCr21Mo
	Incoloy901
	Incoloy925	N09925
	Incoloy926	N08926	1.4529
Inconel600	N06600	2.4816	NCF1B	NCF600	GH600	1Cr15Ni75Fe8	NiCr15Fe8
Inconel601	N06601	2.4851	NCF601	NCF601		1Cr23Ni60Fe13Al	NiCr23Fe
Inconel625	N06625	2.4856	NCF625	NCF625		0Cr20Ni65Mo10Nb4	NiCr22Mo9Nb
Inconel690	N06690	2.4642				0Cr30Ni60Fe10	NiCr29Fe
Inconel718	N07718	2.4668			GH169		NiCr19Fe19Nb5Mo3
	Inconel725	N07725
Inconel X-750	N07750	2.4669	NCF750		GH145		XCr15Fe7TiAl
HC-276	N10276	2.4819				00Cr15Ni60Mo16W5Fe5	NiMo15Cr15W
HB	N10001	2.4800*				0Ni65Mo28Fe5V	S-NiMo 30
HB-2	N10665	3.4617				00Ni70Mo28	NiMo28
HB-3	N10675	2.4600*					NiMo29Cr
HC	N10002	2.4819				0Cr15Ni60Mo16W5Fe5	NiMo16Cr15W
HC-4	N06455	2.4610*				00Cr16Ni65Mo16Ti	NiMo16Cr16Ti
HC-22	N06022	2.4602					NiMo21Cr14W
HC-2000	N06200	2.4675					NiCr23Mo16Cu
	Hastelloy-X	N06002	2.4465
	Monel400	N04400	2.4360，2.4361
	MonelK500	N05500	2.4375
	Monel401	N04401
	Monel404		2.4867
	Ni 200	N02200	2.4066
	Ni 201	N02201
	Nitronic50	S20910			XM-19
	Nitronic60	S21800			Alloy218
Alloy20 Cb-3	N08020	2.4660*		Carpeter20Cb-3		0Cr20Ni35Mo3Cu4Nb	NiCr20CuMo
Alloy31	N08031	1.4562					X1NiCrMoCu 32-28-7
Alloy33	N08033	1.4591					X1NiCrMoCuN 33-32-1

ASTM	UNS	W-Nr.	JIS	KS		Element	DIN EN/DIN
Alloy20 Cb-3	N08020	2.4660*		Carpeter20Cb-3		0Cr20Ni35Mo3Cu4Nb	NiCr20CuMo
IncoloyA-286	S66286	1.4980,1.4944	SUH660
Incoloy800	NO8800	1.4876	NCF800B	NCF2B	GH20	0Cr20Ni32AlTi	X2NiCrAlTi3220
Nimonic75	2.4951
	N06219	2.4855					NiCr19Mo9Si
HastelloyX	N06002	2.4613
Inconel600	N06600	2.4816	NCF1B	NCF600	GH600	1Cr15Ni75Fe8	NiCr15Fe8
Inconel625	N06625	2.4856	NCF625	NCF625	NS3306	0Cr20Ni65Mo10Nb4	NiCr22Mo9Nb
InconelX-750	N07750	2.4669	NCF750				XCr15Fe7TiAl
Nimonic80A	N07080	2.4952
Inconel718	N07718	2.4668			GH4169
	Inconel725	N07725
	Incoloy925	N09925
Inconel600	N06600	2.4816	NCF600	NCF1B		1Cr15Ni75Fe8	LC-NiCr15Fe
			PB
Alloy4
	Alloy31	N08031	1.4562
F15
Invar36	K93600	1.3912

Material	Monel/Inconel/Hastelloy/Duplex Steel/PH Steel/Nickel Alloy
Shape	Round,Forging,Ring,Coil,Flange,Disc,Foil,Spherical,Ribbon,Square,Bar,Pipe,Sheet
Grade	Duplex:2205(UNS S31803/S32205),2507(UNS S32750),UNS S32760(Zeron 100),2304,904L
	Others:253Ma,254SMo,654SMo,F50(UNSS32100)F60,F61,F65,1J22,N4,N6 etc
	Alloy: Alloy 20/28/31
	Hastelloy:HastelloyB/ -2/B-3/C22/C-4/S/C276/C-2000/G-35/G-30/X/N/g
	Hastelloy B/UNS N10001, Hastelloy B-2/UNS N10665/DIN W. Nr. 2.4617, Hastelloy C, Hastelloy C-4/UNS N06455/DIN W. Nr. 2.4610, Hastelloy C22/UNS N06022/DIN W. Nr. 2.4602, Hastelloy C276/UNS N10276/DIN W. Nr. 2.4819, Hastelloy X/UNS N06002/DIN W. Nr. 2.4665
	Haynes: Haynes 230/556/188
	Inconel 600/601/602CA/617/625/713/718/738/X-750,Carpenter 20
	Inconel 718 / UNS N07718 / DIN W. Nr. 2.4668,Inconel 601 / UNS N06601 / DIN W. Nr. 2.4851, Inconel 625 / UNS N06625 / DIN W. Nr. 2.4856,Inconel 725 / UNS N07725,Inconel X-750 / UNS N07750 / DIN W. Nr. 2.4669,Inconel 600 / UNS N06600 / DIN W. Nr. 2.4816
	Incoloy: Incoloy 800/800H/800HT/825/925/926;
	GH: GH2132,GH3030,GH3039,GH3128,GH4180,GH3044
	Monel: Monel 400/K500/R405
	Nitronic: Nitronic 40/50/60
	Nimonic: Nimonic 75/80A/90/A263
Specification	Wire: 0.01-10mm Strip: 0.055.0-5.0250mm Bar: φ4-50mm;Length 2000-5000mm Pipe: φ6-273mm;δ1-30mm;Length 1000-8000mm Sheet: δ 0.8-36mm;Width 650-2000mm;Length 800-4500mm
Standard	GB,AISI,ASTM,DIN,EN,SUS,UNS etc
Inspection	ISO,SGS,BV and so on.
Application	High temperature components such as turbine blades, guide vanes, turbine disks, high pressure compressor disks,machine manufacturing and combustion chambers used in the manufacture of aviation, naval and industrial gas turbines