Material No.: 2.4602

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

Description

EN symbol (short)NiCr21Mo14W
Alloy 22
UNSN 06022
Registered work's labelHastelloy® C22
Density lb/in30,314
Hardness HB240( max)
CompositionNickel Chrome Molybdenum Wolfram alloy
Categoryhigh-temperature resisting steels and alloys
Structure
Corrosionhigh corrosion resistance
DescriptionAlloy 2.4602 (alloy 22) is a highly non-corrosive nickel chrome molybdenum wolfram alloy and shows an excellent resistance to oxidising, reducing and mixed acids.

Chemical Composition

 CMnPSCrMoSiVCoWFeNi
2.4602Min %    20,0012,50   2,502,00bal.
Max %0,010,50 0,0250,01522,5014,500,080,352,503,506,00bal.
(Key to Steel 2010)
alloy 22
N 06022		Min %    20,0012,50   2,502,00remainder.
Max %0,0150,50 0,0200,02022,5014,500,080,352,503,506,00remainder
ASTM B622

Physical properties

PropertyValue
Density: lb/in30,314
Hardness: HB240( max)
Permeability at 20°C/68°F< 1,001
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)
100 / 212
423 (--)11,1 (--)123 (--)202 (--)12,4 (--)
200 / 393
(204 /400)		444
(0,106)		13,4
(94)		124
(746)		197
(28,4)		12,4
/(6,9)
300 / 572
316 / 600		460
(0,119)		15,5
(111)		125
(753)		190
(27,6)		12,5
(7,0)
400 / 752
(427 / 800)(		476
(0,114)		17,5
(131)		126
(759)		185
(26,2)		13,1
(7,4)
500 / 932/
(538 / 1000)		495
(0,117)		19,5
(140)		127
(767)		178
(25,7)		13,7
(7,7)
600 / 1112
(649/ 1200)		514
(0,125)		21,3
(156)		128
(774)		173
(24,8)		14,3
(8,1)
700 / 1292
(760 /14009		53323,2129167
(23,6)		14,9
(8,5)
800 / 1472
(871 / 1600)		   159
(22,3)		15,5
(8,8)
1000 / 1832   143 (20,7)16,2

Mechanical properties (20°C / 68°F)

Yield strengthRp0,2 min.N/mm2/ ksi310/ 45
Yield strength1,0 min. N/mm2/ksi335 /49
Tensile strength Rm N/mm2/ ksi690 /100
Elongation A 5 ( %)45
ISO V-notch impact toughness
(Avarage values at RT ) j/cm2		>=150
ISO V-notch impact toughness
(Avarage values at(-196°C) -320°F) j/cm2		>=120
Remarks 

Temparature information

Application area
Operation temperature-321 ºF  to 1382 ºF 
Explanation reportgood application possibilities, if strong oxidising agents are available (such as ferric (III) chloride, chlorine, formic acid, seawtater, acetic acid)
Solution heat treatment
Working temperature2021 ºF  to 2075 ºF 
Explanation reportfast cooling with water, air cooling possible for thicknesses up to 0.06"
Solution heat treatment
Working temperature2012 ºF  to 1652 ºF 
Explanation reportfast cooling with water or air
Processing informationscombustibles with low sulphuric content

Standards / information

StandardsDesciption
ASTM B 366Standard Specification for Factory-Made Wrought nickel and nickel alloy fittings
ASTM B 564-06Standard Specification for Nickel Alloy Forging
ASTM B 574Standard Specification for LOW-Carbon Nickel-Molybdenum Alloy Rod
ASTM B 575Standard Specification for Plate, Sheet and Strip
ASTM B 619Standard Spezifikation for Welded Nickel and Alloy Pipe
ASTM B 622Standard Specification for Seamless Nickel and Nickel-Cobalt Alloy Pipe and Tube
ASTM B 626Standard Specification for Welded Nickel and Nickel-Cobalt Alloy Tube
DIN 17744 (2002/09)nickel-forgeable alloy with molybdenum and chrome
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 17753 (2002/09)wire out of nickel with nickel-wrought alloy properties
VdTÜV / Werkstoffblatt 479extremely corrosion resistant alloy, NiCr21Mo 14W, material-nr. 2.4602 sheet metal, ribbon, forging, flange, rod and pipe

Process information

Cold formingin solution annealed state, great modifications require intermittent annealing
Chip removing processpreferably in solution annealed state, due to tendency to cold-work hardening
slow cutting rate at constant contact of cutting tools
Welding
 - Material classification acc. CEN ISO/TR 1560843
 - Typewelds very good
 - Add. materialWelding filler metal : 2.4635/2.4607 bei WIG/MIG
2.4639/2.4609 bei Stabelektrode (covered welding electrode- low C and Si content)
 - Hintsgenerally no heat treatment necessary after welding process

Main fields of application

Details of applicationGood possibilities for application when there are strong oxidants like ferric chloride, chlorine, formic acid, sea water,
acetic acid
CertificationsNACE MR-01-75
Chemical IndustryChlorwasserstoff
Flue gas desulphurisation plants
Environmental technologysewage works
waste incineration plants

Range of products

Product typeProduct
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
collars
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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