Material No.: N 06625

DescriptionChemical
composition		Physical
mechanical
properties		Temparature
information		StandardsProcess
information		Application
Certification		ProductsAll

Description

EN symbol (short)NiCr22Mo9Nb
Material No.2.4856
Alloy 625
AFNORNC 22DNb
Registered work's labelInconel® 625
Density kg/dm38,5
Hardness HB<=240)
CompositionNickel Chrome Molybdenum alloy
CategoryHeat resistant steels and alloys
Structure
CorrosionNo translation!
Additional characteristicsgood mechanical properties from low to high temperature ranges
excellent resistance against chloride acidic substances
Descriptionexcellent resistance against corrosion in various corrosive substances (phosphoric/nitric/sulfuric/hydrochloric acid)
also resistant to chloride induced tensile corrosion
resistant against alkalics and organic acids
excellent resistance against fissures, crevice/intercrystalline corrosion

Chemical Composition

 CSiMnPSCrMoNiTiFeCb+TaAlCuNbCo
N 06625Min %     20,008,0058,00  3,15    
Max %0,100,500,500,0150,01523,0010,00.0,405,004,150,40   
ASTM B704
2.4856Min %     20,008,0058,00     3,15 
Max %0,100,500,500,020,01523,0010,00 0,405,00 0,400,504,151.00
(Key to Steel 2010)
alloy 625Min %     20,008,0058,00  3,15    
Max %0,100,500,500,0150,01523,0010,00 0,405,004,150,40   

Physical properties

PropertyValue
Density: kg/dm38,5
Hardness: HB<=240)
Permeability at 20°C/68°F1.003
magnetizabeparamagnetic
Temperature T
°C/F
(°C/F)		Specific heat
J / kgK
(Btu / lb °F)		Thermal conductivity
W/mK
(Btu·in / ft2·h·°F)		Electric resistance
µΩ · cm
(Ω circ mill / ft)		Modulus of elasticity
kN/mm2
(103 ksi)		Expansion rate from 70°F bis T
10-6 / K
(10-6 / °F)
204159,8128209
(7,0)
20046012,813219513,1
40050516,313518513,7
60055019,313617014,6
80060022,613615315,8
100065026,713212817,0

Mechanical properties (20°C / 68°F)

Yield strength0,303
Yield strength60-50
Tensile strength820 -1050
Ultimate strain>=30
Impact energy ISO-V>= 125
notched impact strength ISO-V (J/cm2) 
(average value at ambient temperature) 
Remarks 

Temparature information

Application area
Operation temperature ºF  to 1832 ºF 
Explanation reportmax. in air
Soft annealing
Working temperature1742 ºF  to 1922 ºF 
Processing informations???
Solution heat treatment
Working temperature2102 ºF  to 1652 ºF 
Explanation reportquick water or air cooling

Standards / information

StandardsDesciption
ASTM B 443standard specification for nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625) Plate,Sheet, and Srip
ASTM B 444standard specification for Nickel-Chromium-Molybdenum-Columbium Alloys (UNS 06625) Pipe and Tube
ASTM B 564-06Standard Specification for Nickel Alloy Forging
ASTM B 705Standard Specification for Nickel-Alloy Welded Pipe
DIN 17750 (2002/09)ribbons and sheet metal out of nickel with nickel-wrought alloy properties
DIN 17751 (2002/09)tubes out of nickel with nickel-wrought alloy properties
DIN 17752 (2002/09)rod made from nickel with nickel-wrought alloy properties
DIN EN 10088-1 (09/2005)Stainless steels Part 1: List of stainless steels
DIN EN 10095 (05/1999)heat resistant steel and nickel alloy
VdTÜV / Werkstoffblatt 499extremely corrosion resistant nickel based alloy, NiCr22Mo9Nb, material-nr. 2.4856 ribbon, sheet metal, section steel, seamless pipe, forging

Process information

Cold formingmaterial in annealed state, mind cold-work hardening
modifications >10% require subsequent soft annealing
Chip removing processpreferably in annealed state, due to a tendency to cold-work hardening
low cutting speed and sufficient rate of cut
Welding
 - Material classification acc. CEN ISO/TR 1560843
 - Typewell weldable
WIG
plasma welding
manual arc welding
MIG/MAG
submerged arc welding
 - Add. material2.4621;2.4831

Main fields of application

Details of applicationfor high-temperature application (1000°C/1832°F) solution annealed/higher carbon, otherwise annealed/lower carbon
Certificationspressure containers according to TÜV -196 - +450°C/-320 - +843°F
in NACE MEO175 included
Chemische VerfahrenstechnikSuperphosphoranlagen; Abfackelrohre (lösungsgeglühte Variante)
Meerwasser
Flue gas desulphurisation plantsflue gas scrubbers
waste incineration plantsKesselrohre (lösungsgeglühte Variante)
Offshore-Industrie
DruckbehälterDruckbehälter
Environmental technologyAbwasseranlagen
offshore plantsMeerwasserentsalzungsanlagen
NasskorrosionshinweiseSchwefesäure sehr gut ( x) ;gut( );mässig ( )
NasskorrosionshinweisePhosphorsäure sehr gut ( X) ;gut( );mässig ( )

Range of products

Product typeProduct
Processing / Constructionfrom bar steel (turning, milling)
Plates / Sheetsplates/sheets
plate/sheet cuts
Rotating componentsfittings from barsteel
Fittingswelded elbows
welded reductions
Welded T-pieces
seamless elbows
seamless reductions
seamless T-pieces
Flanges / Collars / Flared tube endsflared tube end
various flanges (weld neck flange,blind flange etc.)
Pipes / Tubeswelded pipes/tubes
welded square pipes/tubes
seamless pipes/tubes
Bar steelflat steel
section steel
round bar steel
hexagon steel

Liability exclusion

All aforementioned specifications serve as a general orientation and have to be reviewed depending on the conditions of use.
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