Material No.: alloy 800

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

Description

EN symbol (short)X10NiCrALTi 32-21
Material No.1.4876
UNSN 08800
Registered work's labelNcrofer®3220
Incoloy 800
Density lb/in.30,287
Hardness (HB)<=192
CompositionNickel Iron Chrome alloy
CategoryHeat resistant steels and alloys
Structureaustenitic
Additional characteristicsforge scale temperature 2012 °F
DescriptionVersion 1.4958(alloy 800H,UNS 08810) or 1.4959 (Alloy 800HT;UNS 08811) increasingly substitute this material, since they can be solution annealed. This procedure improves their creep-strength limit in high temperatures.

Chemical Composition

 CMnPSCrNiSiAlTiFeCu
alloy 800Min %           
Max %           
1.4876Min %    19,0030,00 0,150,15  
Max %0,122,00,0300,01523,0034,001,000,600,60  
(Key to steel 2010)
N 08800Min %    19,030,0 0,150,1539,5 
Max %0,101,50 0,01523,035,01,00,600,60 0,75
ASTM B 407 (N 08800-Alloy 800)

Physical properties

PropertyValue
Density: lb/in.30,287
Hardness: (HB)<=192
Permeabilität bei 20°C1,01
magnetizableno
elasticity modulus (N/mm2) /ksi
194 / 28,1
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)
20 / 68472 (--)11,5 (--)101 (--)194 (--)12 (--)
100 / 212501 (--)13,1 (--)104 (--)189 (--)15,1 (--)
200 / 392525 (--)14,8 (--)108 (--)183 (--)15,7 (--)
300 / 572532 (--)16,4 (--)112 (--)177 (--)16,2 (--)
400 / 752555 (--)18,1 (--)115 (--)170 (--)16,6 (--)
500 / 932582 (--)19,6 (--)118 (--)163 (--)17,0 (--)
600 / 1112604 (--)21,2 (--)120 (--)156 (--)17,4 (--)
800 /1472609 (--)24,3 (--)124 (--)141 (--)18,0 (--)
1000 / 1832641 (--)27,3 (--)127 (--)127 (--)18,6 (--)
Temp.Creep strain limitCreep strain limitCreep rupture strengthCreep rupture strengthCreep rupture strength
1000 h
°C/°FMpa/ksi
650 / 1202  165 / 23,9  
705 / 1300  105 / 15,2  
870 /1600  32 / 4,7  
980 /1800  14 / 2,0  
TemperatureYield strength
in high temperatures		Yield strength
in high temperatures		Tensile strenght
in high temperatures
°C / °FRp 1,0Rp 0,2Rm
N/mm2 / ksiN/mm2 /ksiN/mm2 /ksi
20 / 68200 / 29170 / 24,6450 / 65,2
100 / 212160 / 23,2140 / 20,3400 / 58,0
300 / 572115 / 16,695 / 13,7390 / 56,5
500 / 932100 / 15,480 / 11,6360 / 52,2
600 / 111295 / 13,775 / 10,9300 / 43,5
ksi value calculated

Mechanical properties (20°C / 68°F)

Dehngrenze200 / 29
Dehngrenze>=170 />=24,6
Zugfestigkeit450-680
Bruchdehnung>=30
>=35		quer
längs
Schlagarbeit ISO-V>=150
>=100		längs
quer
(Mittelwert von 3 Proben) 

Temparature information

Application area
Operation temperature ºF  to 1112 ºF air to 2012°F
Explanation reportsoft-annealed : resistant to scaling by air to 2012 °F
Solution heat treatment
Working temperature1922 ºF  to 2102 ºF 
Explanation reportcooling down Water/air
soft-annealed
Working temperature1688 ºF  to 2552 ºF 
Solution heat treatment
Working temperature1832 ºF  to 2282 ºF 

Standards / information

StandardsDesciption
ASTM B 163Standard Specifications for seamless nickel and nickel alloy condensers and heat-exchanger tubes
ASTM B 407Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube
ASTM B 408Standard Specification for Nickel-Iron-Chromium Alloy Rod and Bar
DIN EN 10297-2 (02/2006)seamless circular steel pipes for machine construction and general technical applications, stainless steel
SEW 310 (08/1992)physical properties of steel
SEW 470 (02/1976)heat-resisting rolled and forged steels
VdTÜV-Werkstoffblatt 412rolled/forged steel, X10NiCrAlTi 32-20, material-nr. 1.4876; sheet metal, ribbon, rod steel, forging, seamless pipe

Process information

Chip removing processprocess in annealed state, due to cold work hardening
low cutting speed
keep constant cutting tool contact
Welding
 - Material classification acc. CEN ISO/TR 156088,2
 - Typewell weldable
all methods of welding
 - Add. material2.4806/2.4807

Main fields of application

Details of applicationscaling resistant in air up to 2012°F
corrosion and heat resistant
CertificationsNace MR 01-75
Steam boiler construction
industral furnace engineering
Apparatus engineering
crude oil

Range of products

Product typeProduct
Plates / Sheetsplates/sheets
plate/sheet cuts
Fittingswelded elbows
welded reductions
Welded T-pieces
seamless elbows
seamless reductions
seamless T-pieces
Flanges / Collars / Flared tube endsvarious flanges (weld neck flange,blind flange etc.)
Pipes / Tubeswelded pipes/tubes
seamless pipes/tubes
Bar steelflat steel
round bar 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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