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Characteristics for grade     12KH18N9   ( 12Х18Н9 )



      Grade :   12KH18N9   ( 12Х18Н9 ) (   Х18Н9   )
      Substitute:   20Х13Н4Г9, 12Х17Г9АН4, 10Х14Г14Н4Т
      Classification :   Corrosion-resistant high-temperature steel
      Equivalent grades:   Go here



Chemical composition in % for grade   12KH18N9   ( 12Х18Н9 )
C Si Mn Ni S P Cr
max   0.12max   0.8max   28 - 10max   0.02max   0.03517 - 19


Mechanical properties under Т=20oС for grade   12KH18N9   ( 12Х18Н9 )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Pipe cooling strain, GOST 9941-81     549   37    
Pipe hot strain, GOST 9940-81     529   40    
Bar, GOST 5949-75 Ø 60   490 196 45 55 Guenching 1050 - 1100oC,Cooling air,
Bar cold-worked , GOST 18907-73     880-930       
Bar, GOST 18907-73     640-880  20    
Forging, GOST 25054-81     490 196 35-4040-48  
Sheet trick, GOST 7350-77     530 215 38   Guenching 1050 - 1120oC,Cooling water,
Sheet thin, GOST 5582-75     540 195 38   Guenching 1050 - 1080oC,Cooling water,
Sheet thin cold-worked , GOST 5582-75     930-1230  13    
Sheet thin cold-worked , GOST 4986-79     980   3-5   


    Brinell hardness for     12KH18N9   ( 12Х18Н9 )   ,     Forging GOST 25054-81 HB 10 -1 = 179   MPa


Technological properties for grade   12KH18N9   ( 12Х18Н9 )
  Weldability: without limitations.


Physical properties for grade   12KH18N9   ( 12Х18Н9 )
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m·Grade) kg/m3 J/(kg·Grade) Ohm·m
20 2.05   15 7900   725
100 2.02 16.6 16.3 7860 504 792
200 1.97 17 17.5 7820   860
300 1.9 17.2 18.8 7780   920
400 1.81 17.5 21.3 7740   976
500 1.73 17.9 23 7690   1028
600 1.6 18.2 26.8 7650   1070
700 1.5 18.6 25.9 7600   1117
800   18.9   7560    
900   19.3        
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     12KH18N9   ( 12Х18Н9 )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanFranceEnglandItalySpainChinaSwedenCzechia
-DIN,WNrJIS AFNORBSUNIUNEGBSSCSN
301
302
303
S30200
1.4300
1.4305
1.4310
1.4319
X10CrNiTi18-9
X12CrNi17-7
X12CrNi18-8
X5CrNi18-7
X5CrNi18-9
SUS302
Z10CN18-09
Z10CNF18-09
Z12CN17-07
302S25
302S26
304S21
X10CrNi18-09
X10CrNi18-10
F.3507
F.3508
F.3517
X10CrNi18-09
1Cr18Ni9
2331
17241



Types of delivery of grade   12KH18N9   ( 12Х18Н9 )
B03 - Metal forming treatment. Forgings
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
B34 - Ribbons
В62 - Steel pipes and connecting parts to them
B73 - Steel Alloy Wire
B76 - Metal nets


Specification :
Mechanical properties :
sв - Tensile strength , [MPa]
sT - Yield stress, [MPa]
d5 - Specific elongation at fracture , [ % ]
y - Reduction of area , [ % ]
KCU - Impact strength , [ kJ / m2]
HB - Brinell hardness , [MPa]

Physical properties :
T - Test temperature , [Grade]
E - Young modulus , [MPa]
a - Coefficient of linear expansion (range 20o - T ) , [1/Grade]
l - Termal (heat) condition coefficient , [Watt/(m·Grade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg·Grade)]
R - Electrical resistance , [Ohm·m]

Weldability :
without limitations - welding is done without heating and subsequent heat treeting
limited weldability - welding is possible under heating up to 100-120 grade and subsequent heat treeting
hard weldability - obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing

  12KH18N9   ( 12Х18Н9 ) - Corrosion-resistant high-temperature steel: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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