Material No.: S 31400

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

Description

EN symbol (short)X15CrNiSi 25-21
Material No.1.4841
AISIAISI 314
AFNORX15CrNiSi 25-21 / EN 10088-1( 06/2005) (FR)
BSX15CrNiSi 25-21 / EN 10088-1( 06/2005) (GB)
Registered work's labelCronifer® 2520
Density lb/in.37,90
Hardness (HB)<=223
Compositionchromium nickel steel
CategoryHeat resistant steels and alloys
Structureaustenitic
Additional characteristicschemically resistant
high oxidation resistance with high mechanical firmness
forge scale temperature 2102°F
DescriptionMarterial 1.4841 is heatresistant and shows high resistance to oxidisation, due to it's high chrome nickel percentage.
It stays very firm even in high temperatures. This steel also shows great chemical stability up to 2012°F.

Chemical Composition

 CSiMnPSCrNNi
S 31400Min %        
Max %        
1.4841Min % 1,50   24,00 19,00
Max %0,202,502,000,0450,01526,000,11022,00
(Key to steel 2010)
AISI 314Min %        
Max %        

Physical properties

PropertyValue
Density: lb/in.37,90
Hardness: (HB)<=223
Permeabilität bei 20°C---
magnetizablenon
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 / 680,5 (--)11,9 (--)  16,1 (--)
200 / 392 15,1 (--)  17,2 (--)
400 / 752 18,3 (--)  18,1 (--)
500 / 932 19,8 (--)  18,4 (--)
600 / 1112 21,3 (--)  18,8 (--)
800 / 1472 24,3 (--)  19,4 (--)
900 / 1652 25,7 (--)  19,7 (--)
1000 / 1832 27,1 (--)  20 (--)
Temp.Creep strain limitCreep strain limitCreep rupture strengthCreep rupture strengthCreep rupture strength
°C /°F1% / 1000h1% 10 000h1000 h10 000 h100 000 h
°C /°FN/mm2 / ksiN/mm2 / ksiN/mm2 / ksiN/mm2 /ksiN/mm2 /ksi
600 /1112105 / 15,295 / 13,7170 / 24,6130 / 18,880 / 11,6
700 / 129250 / 7,275 / 10,890 /13,040 /5,818 / 2,6
800 / 147223 / 3,310 /1,440 / 5,820 /2,97 / 1,0
900 / 165210 / 1,4 20 / 2,910 71,43 / 0,4
1000 / 1832     
ksi value calculated

Mechanical properties (20°C / 68°F)

Dehngrenze>=230solution annealing
Dehngrenze 
Zugfestigkeit550-750solution annealing
Bruchdehnung>=30solution annealing
Schlagarbeit ISO-V 
(Mittelwert von 3 Proben) 
vield strenght (Ro,2) (MPa)>=230

Temparature information

Application area
Operation temperature1652 ºF  to 2048 ºF air: up to 1922°F
Explanation reportscaling resistance (air) up to 1922°F
Solution heat treatment
Working temperature1922 ºF  to 2102 ºF 
Explanation reportfast cooldown in air or water
quenching
Working temperature1922 ºF  to 2012 ºF 
Explanation reportCooldown: water/air
Solution heat treatment
Working temperature1472 ºF  to 2102 ºF 

Standards / information

StandardsDesciption
SEW 310 (08/1992)physical properties of steel
SEW 470 (02/1976)heat-resisting rolled and forged steels

Process information

Cold forminggood
Chip removing processcarbide formation increses wear on cutting tools, requires cooling
Welding
 - TypeLaser welding
manual arc welding (E)
MAG solid wire
WIG
 - Add. material1.4842
 - Hintsno heat treatment necessary before or after welding process

Main fields of application

Details of application-scaling resistance (air) up to 1922°F
durable under oxidising conditions (in sulfuric gases only up to 1202°F)
average corrosion resistance in carbonizing (up to 1652°F) and nitrogenous gases
Certifications
Environmental technologyMüllverbrennunsanlagen
industral furnace engineering
Apparatus engineeringApparate für Hochtempetureinsatz
petrochemical industry
Chemical Industry

Range of products

Product typeProduct
Processing / Constructionfrom pipes, fittings, flanges (welded)
Plates / Sheetsplates/sheets
plate/sheet cuts
Fittingswelded reductions
Welded T-pieces
seamless elbows
seamless reductions
seamless T-pieces
Other Fittings a.o. Weldolets, Nipples
Flanges / Collars / Flared tube endsvarious flanges (weld neck flange,blind flange etc.)
Bumped boiler ends / caps / round blanksfrom sheets
Pipes / Tubeswelded pipes/tubes
seamless pipes/tubes
Bar steelflat steel
section 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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