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Characteristics for grade     12KH18N9T   ( 12Х18Н9Т )



      Grade :   12KH18N9T   ( 12Х18Н9Т ) (   Х18Н9Т   )
      Substitute:   10Х14Г14Н4Т, 12Х17Г9АН4, 12Х18Н10Т
      Classification :   Corrosion-resistant high-temperature steel
      Equivalent grades:   Go here



Chemical composition in % for grade   12KH18N9T   ( 12Х18Н9Т )
C Si Mn Ni S P Cr Cu -
max   0.12max   0.8max   28 - 9.5max   0.02max   0.03517 - 19max   0.3 (5 С - 0.8) Ti, остальное Fe


Mechanical properties under Т=20oС for grade   12KH18N9T   ( 12Х18Н9Т )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar, GOST 5949-75 to Ø 60   540 196 40 55 Guenching 1020 - 1100oC,Cooling air,
Bar cold-worked , GOST 18907-73     880-930       
Wire, GOST 18143-72     590-880  20-25   
Forging, GOST 25054-81 to 1000   510 196 35-4040-48 Guenching 1050 - 1100oC,
Sheet trick, GOST 7350-77     530 215 38   Guenching 1030 - 1080oC,Cooling water,


    Brinell hardness for     12KH18N9T   ( 12Х18Н9Т )   ,     Forging GOST 25054-81 HB 10 -1 = 170   MPa


Technological properties for grade   12KH18N9T   ( 12Х18Н9Т )
  Weldability: without limitations.


Physical properties for grade   12KH18N9T   ( 12Х18Н9Т )
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 1.95     7900   725
100 1.89 16.6 16 7860 469 792
200 1.82 17 18 7820 486 861
300 1.75 17.6 20 7780 498 920
400 1.67 18 21 7740 511 976
500   18.3 23 7690 519 1028
600 1.53 18.6 25 7650 528 1075
700 1.43 18.9 26 7600 532 1117
800 1.35 19.3 28 7560 544 1149
900   19.5 29 7510 548 1176
1000   20.1        
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     12KH18N9T   ( 12Х18Н9Т )
Warning! Indicated both exact and nearest equivalents.
USAGermanyJapanEngland
-DIN,WNrJIS BS
321
X10CrNiTi18-9
SUS321
SUS321TK
321S51



Types of delivery of grade   12KH18N9T   ( 12Х18Н9Т )
B03 - Metal forming treatment. Forgings
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
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

  12KH18N9T   ( 12Х18Н9Т ) - 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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