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Characteristics for grade     12KH18N12T   ( 12Х18Н12Т )



      Grade :   12KH18N12T   ( 12Х18Н12Т ) (   Х18Н12Т   )
      Substitute:   12Х18Н9, 12Х18Н9Т, 12Х18Н10Т
      Classification :   Corrosion-resistant high-temperature steel
      Equivalent grades:   Go here



Chemical composition in % for grade   12KH18N12T   ( 12Х18Н12Т )
C Si Mn Ni S P Cr Cu -
max   0.12max   0.8max   211 - 13max   0.02max   0.03517 - 19max   0.3 (5 С - 0.7) Ti, остальное Fe


Mechanical properties under Т=20oС for grade   12KH18N12T   ( 12Х18Н12Т )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Pipe hot strain, GOST 9940-81     529   40    
Pipe   longitudinal 540 220 35 55 Heating 1050 - 1100oC,Cooling water,
Pipe cooling strain, GOST 9941-81     549   35    
Bar, GOST 5949-75     540 196 40 55 Guenching 1020 - 1100oC,Cooling water,
Sheet trick, GOST 7350-77     530 235 38   Guenching 1030 - 1080oC,Cooling water,


Technological properties for grade   12KH18N12T   ( 12Х18Н12Т )
  Weldability: limited weldability.


Physical properties for grade   12KH18N12T   ( 12Х18Н12Т )
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   15.1 7900   761
100 2.02 16.6 16.3 7860 460 800
200 1.97 17 17.6 7820 482 865
300 1.9 17.2 18.7 7780 507 930
400 1.81 17.5 20.4 7740 525 982
500 1.73 17.9 22.2 7690 545 1038
600 1.6 18.2 24.1 7650 563 1070
700 1.5 18.6 25.9 7600 579 1120
800   18.9 27.4 7560 590 1155
900   19.3 29.1 7510 603 1210
1000     30.8   616 1245
1100     32.3   625 1275
1200     34.1   637 1315
T E 10- 5 a 10 6 l r C R 10 9


Equivalent steels for grade     12KH18N12T   ( 12Х18Н12Т )
Warning! Indicated both exact and nearest equivalents.
GermanyFrance
DIN,WNrAFNOR
X10CrNiTi18-10
X12CrNiTi18-19
X12CrNiTi18-9
Z6CNT18-12B



Types of delivery of grade   12KH18N12T   ( 12Х18Н12Т )
В22 - Graded and shaped rolling
B23 - Sheets and Strips
В32 - Graded and shaped rolling
B33 - Sheets and Strips
В62 - Steel pipes and connecting parts to them


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

  12KH18N12T   ( 12Х18Н12Т ) - 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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