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Metals -> High-temperature or heat-resistant steel and alloy -> Relaxation-resistant steel

Characteristics of the material 25KH2M1F   ( 25H2M1F,   25󥃟 ).

Material : 25KH2M1F   ( 25H2M1F,   25󥃟 )
Classification : Relaxation-resistant steel


Chemical composition in % of the material 25KH2M1F   ( 25H2M1F,   25󥃟 ) .
C Si Mn Ni S P Cr Mo V Cu
0.22 - 0.290.17 - 0.370.4 - 0.7max   0.25max   0.025max   0.032.1 - 2.60.9 - 1.10.3 - 0.5max   0.2


Temperature of critical points of the grade 25KH2M1F   ( 25H2M1F,   25󥃟 ).
Ac1 = 780 ,      Ac3(Acm) = 870 ,       Ar3(Arcm) = 790 ,       Ar1 = 700


Mechanical properties under =20o of the material 25KH2M1F   ( 25H2M1F,   25󥃟 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar 25 longitudinal 900 750 10 40300Normalizing 1030 - 1060oC,Drawing 680 - 720oC, air,


    Brinell hardness of the material   25KH2M1F   ( 25H2M1F,   25󥃟 )   (quenching, tempering) ,       HB 10 -1= 235 - 277   MPa


Physical properties of the material 25KH2M1F   ( 25H2M1F,   25󥃟 ) .
T E 10- 5 a 10 6 l r C R 10 9
Grade MPa 1/Grade Watt/(m稧rade) kg/m3 J/(kg稧rade) Ohm穖
20 2.23     7800   270
100 2.18 12.5 32.7 7780 536 360
200 2.13 12.9 31.8 7750 574 420
300 2.07 13.3 30.1 7720 599 500
400 2 13.7 28.5 7680 632 590
500 1.92 14 28.1 7650 674 710
600 1.83 14.7 26.4 7600 733 840
700 1.75         970
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 25KH2M1F   ( 25H2M1F,   25󥃟 ) .
  Weldability: is not used.



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/(m稧rade)]
r - Density , [kg/m3]
C - Specific heat ( range 20o - T ), [J/(kg稧rade)]
R - Electrical resistance , [Ohm穖]

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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