Material No.: Alloy 24

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

Description

EN symbol (short)X2CrNiMnMoN25-18-6-5
Material No.1.4565
UNSS 34565
AFNORX2CrNiMnMoN25-18-6-5 / NF EN 10088-1(05/2005) (FR)
BSX2CrNiMnMoN25-18-6-5 / B.S EN 10088-1(05/2005) (GB)
Registered work's labelNIROSTA®(R) 4565 S
alloy 24
Density kg/dm38,0
Hardness HB 30140-200
Compositionchromium nickel molybdenium steels
CategoryStainless steels
steel, resistant to rust and acids
Structureaustenitic
Corrosionresistant to intercrystalline corrosion
satisfactionary against pitting corrosion
Additional characteristicshigh resistance in substances containing sour gas or high chloride concentrations

Chemical Composition

 CMnPSCrMoSiNiNNbCb+Ti
Alloy 24 Min %           
Max %           
1.4565Min % 5,0  24,04,0 16,00,40  
Max %0,037,00,0300,01526,05,01,019,00,600,150 
(Key to steel 2010) SEW 400 deviations for MnCr;Mo
S 34565Min % 5,00  23,04,0 16,00,40  
Max %0,037,000,0300,01025,05,01,0018,00,60 0,10
ASTM A312 (UNS S34565)

Physical properties

PropertyValue
Density: kg/dm38,0
Hardness: HB 30140-200
polishableyes
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 / 68460 (--)12 (--) 198 (--) 
100 / 212   186 (--)14,5 (--)
200 / 392   177 (--)15,5 (--)
300 / 572   170 (--)16,3 (--)
400 / 752   165 (--)16,8 (--)
500 / 932   158 (--)17,2 (--)
temperature0,2% Yieldstrength
in high temperatures
1,0% Yieldstrength
in high temperatures
°C / °FRp0,2Rp1,0
N/mm2/ksiN/mm2/ksi
100 / 212>=350 />=50,7>=400 / >=58
200 / 392>=270 / >=39,1>=310/ >=44,9
300 / 572>=240 />= 34,8>=270 />=39,1
400 / 752>=210 / >=30,4>=240/ >=34,8
500 / 932>=200 / >=29,0>=240 />= 34,8
ksi value calculated

Mechanical properties (20°C / 68°F)

0,2%Yield strength Rp0,2(N/mm2)/ksi>=420 />=60,9<=160 mm
1%Yield strength Rp 1,0(N/mm2)/ki
Yield strength ksi / (Mpa)
>= 460/>=66,7
60/ (415)
<=160 mm
ASTM A312 (S 34565)
Tensile strength Rm (N/mm2)


Tensile strength ksi / (Mpa)
(800-950)/116-137,7

115/ (795)
<= 160mm


ASTM A312 (S 34565)
Elongation %>=35<= 160mm
impact work ISO-V (J)>=100<= 160mm
E-modul (Mpa)192000

Temparature information

Application area
Operation temperature ºF  to 842 ºF operating temperature limit
Solution heat treatment
Working temperature2048 ºF  to 2138 ºF 
Explanation reportcooldown: air/water
Solution heat treatment
Working temperature1742 ºF  to 2192 ºF 
Explanation reportcool down: air

Standards / information

StandardsDesciption
SEW 400 (1997-02)Rolled and forged stainless steels

Process information

Cold formingcold form material in annealed state
Chip removing processtendency to cold work hardening
-low cutting rate
-moderate feed speed
-constant tool application
Welding
 - Material classification acc. CEN ISO/TR 156088.2
 - Typegas fusion welding
well weldable
manual arc
protective gas
 - Add. material1.4466
 - Hintspre-heat 302°F

Main fields of application

Details of applicationmostly used in sea water plants, crude oil transportation and environmental technologies
Certifications
Environmental technology
Flue gas desulphurisation plants
sea and lake water plantsMeerwasserentsalzungsanlagen
Chemical Industrychemischer Anlagenbau
Tunnelbau
building industry
offshore plantsMeerwasserentsalzungsanlagen

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
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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