Cov alloy 625 (UNS N06625)
Cov ntsiab lus	Ib qho nickel-chromium-molybdenum alloy nrog ib qho ntxiv ntawm niobium uas ua haujlwm nrog molybdenum kom nruj cov hlau matrix thiab yog li muab lub zog siab yam tsis muaj kev kho cua sov ntxiv. Lub alloy resists ntau yam ntawm qhov hnyav heev corrosive ib puag ncig thiab tshwj xeeb tshaj yog tiv taus pitting thiab crevice corrosion. Siv nyob rau hauv chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors.
Standard Product Forms	Yeeb, raj, ntawv, sawb, phaj, puag ncig bar, tiaj bar, forging Tshuag, hexagon thiab hlau.
Tshuaj muaj pes tsawg leeg Wt,%		Min	Max.		Min.	Max.		Min.	Max.
Ni	58.0 ua		Cu			C		0.1
Cr	20.0 Nws	23.0 Nws	Co		1.0	Si		0.5
Fe		5.0	Al		0.4	P		0.015 ib
Mo	8.0 ib	10	Ti		0.4	S		0.015 ib
Nb	3.15	4.15	Mn		0.5	N
PhysicalConstants	Qhov ceev, g /8.44 ib
Melting Range, ℃ 1290-1350
Tej yam cuab yeej cuab tam	(Kev daws teeb meem) (1000h) Rupture Strength (1000h) ksi Mpa 1200 ℉ / 650 ℃ 52 360 1400 ℉ / 760 ℃ 23 160 1600 ℉ / 870 ℃ 72 50 1800 ℉ / 980 ℃ 26 18

Microstructure

Alloy 625 yog ib qho kev daws teeb meem matrix-stiffened face-centered-cubic alloy.
Cov cim

Vim nws cov ntsiab lus qis thiab ruaj khov kho cua sov, Inconel 625 qhia me ntsis kev xav tau txawm tias tom qab 50 teev ntawm qhov kub thiab txias hauv thaj tsam 650 ~ 450 ℃.

Cov hlau yog muab tso rau hauv cov khoom muag muag rau cov ntawv thov uas muaj cov xeb ntub dej (Alloy 625, qib 1), thiab tau pom zoo los ntawm TUV rau cov hlab ntsha hauv qhov kub ntawm -196 txog 450 ℃.

Rau cov ntawv thov kub kub, saum toj no approx. 600 ℃, qhov twg siab zog thiab tsis kam mus rau creep thiab rupture yog yuav tsum tau ib tug tov-annealed version (Alloy 625, qib 2) nrog ib tug ntau dua carbon ntsiab lus yog ib txwm ua hauj lwm thiab muaj nyob rau hauv kev thov nyob rau hauv ib co ntaub ntawv cov khoom.

Kev tiv thaiv zoo rau pitting, crevice corrosion, thiab intergranular nres;

Yuav luag tiav kev ywj pheej los ntawm chloride-induced stress-corrosion cracking;

Kev tiv thaiv zoo rau cov ntxhia acids, xws li nitric, phosphoric, sulfuric thiab hydrochloric acids;

Zoo tiv thaiv alkalis thiab organic acids;

Zoo mechanical zog.
Corrosion Resistance

Cov ntsiab lus siab ntawm alloy 625 ua rau nws tuaj yeem tiv taus ntau yam ntawm ib puag ncig corrosion hnyav. Hauv qhov chaw me me xws li huab cua, dej tshiab thiab dej hiav txwv, nruab nrab ntsev, thiab alkaline xov xwm yuav luag tsis muaj kev tawm tsam. Nyob rau hauv ib puag ncig corrosion hnyav dua kev sib xyaw ntawm npib tsib xee thiab chromium muab kev tiv thaiv rau oxidizing tshuaj, whereas lub siab nickel thiab molybdenum cov ntsiab lus muab kev tiv thaiv rau nonoxidizing tiv thaiv rhiab heev thaum vuam, yog li tiv thaiv kev sib tsoo intergranular. Tsis tas li ntawd, cov ntsiab lus siab nickel muab los ntawm chloride ion-kev nyuaj siab-corrosion tawg.
Daim ntawv thov

Lub soft-annealed version ntawm Alloy 625 (qib 1) yog nyiam rau cov ntawv thov nyob rau hauv cov txheej txheem tshuaj, nyob rau hauv marine engineering thiab nyob rau hauv cov pa phem cov cuab yeej rau kev tiv thaiv ib puag ncig. Tej kev siv yog:

1. Superphosphoric acid ntau lawm khoom;

2. Nuclear wasts reprocessing khoom;

3. Cov roj ntsha ua kua qaub;

4. Piping systems thiab sheathing ntawm risers hauv kev tshawb nrhiav roj;

5. Offshore kev lag luam thiab cov khoom siv marine;

6. Cov khoom siv hluav taws xob hluav taws xob thiab cov khoom damper;

7. Cov kab hluav taws xob.
Rau cov ntawv thov kub kub, txog li 1000 ℃, cov tshuaj tov-annealed version ntawm Alloy 625 (qib 2) tuaj yeem siv raws li ASME code rau cov hlab ntsha siab. Cov ntawv thov raug yog:

 

1. Cov khoom siv hauv cov khoom siv khib nyiab thiab cov khoom siv hluav taws xob pov tseg raug rau qhov kub thiab txias;

2. Flare stacks hauv refineries thiab offshore platforms;

3. Recuperator thiab compensators;

4. Submarine diesel cav tso tshuab;

5. Superheater raj nyob rau hauv khib nyiab incineration nroj tsuag.