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Metals -> High-temperature or heat-resistant steel and alloy -> Low alloy high-temperature steel

Characteristics of the material 12KH1MF   ( 12H1MF,   121 ).

Material : 12KH1MF   ( 12H1MF,   121 )
Classification : Low alloy high-temperature steel


Chemical composition in % of the material 12KH1MF   ( 12H1MF,   121 ) .
C Si Mn Ni S P Cr Mo V Cu
0.08 - 0.150.17 - 0.370.4 - 0.7max   0.3max   0.025max   0.030.9 - 1.20.25 - 0.350.15 - 0.3max   0.2


Temperature of critical points of the grade 12KH1MF   ( 12H1MF,   121 ).
Ac1 = 760 ,      Ac3(Acm) = 890 ,       Ar3(Arcm) = 825 ,       Ar1 = 730 ,       Mn = 430


Mechanical properties under =20o of the material 12KH1MF   ( 12H1MF,   121 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar   longitudinal 480 260 21 551000Normalizing 960 - 980oC,Drawing 740 - 760oC,
Forging   longitudinal 480 260 20 50600Normalizing and high drawing


    Brinell hardness of the material   12KH1MF   ( 12H1MF,   121 )   (normalize) ,       HB 10 -1= 123 - 179   MPa
    Brinell hardness of the material   12KH1MF   ( 12H1MF,   121 )   (hot-rolled, annealing) ,       HB 10 -1= 217   MPa


Physical properties of the material 12KH1MF   ( 12H1MF,   121 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(mGrade) kg/m3 J/(kgGrade) Ohmm
20 1.98     7800   230
100 1.93 12.4 44 7780   278
200 1.88 13 44 7750   343
300 1.83 13.6 42 7720   430
400 1.75 14 40 7680   532
500 1.67 14.4 37 7640   647
600 1.57 14.7 35 7600   775
700 1.51 14.9 32 7570   962
800   14.8 28 7540   1087
900   12 28 7560   1130
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 12KH1MF   ( 12H1MF,   121 ) .
  Weldability: limited weldability.



Specification :
Mechanical properties :
s - 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/(mGrade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kgGrade)]
R - Electrical resistance , [Ohmm]

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

Database of steels and alloys (Marochnik) contains information about chemical composition and properties of 1500 steels and alloys (stainless steel, alloy steel, carbone steel, structural steel, tool steel, cast iron, aluminum alloy, titanium alloy, copper alloy, nickel alloy, magnesium alloy and others).
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