Database of Steel and Alloy (Marochnik)

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Metals -> Structural steel -> Alloy structurall steel

Characteristics of the material 34KHN3M   ( 34HN3M,   34ÕÍ3Ì ).

Material : 34KHN3M   ( 34HN3M,   34ÕÍ3Ì )
Substitute: 35ÕÍÂ, 35ÕÃÍÌ, 38Õ2ÍÌ, 34ÕÍ1Ì, 34ÕÍ3ÌÀ, 34ÕÍ3ÌÔÀ
Classification : Alloy structurall steel


Chemical composition in % of the material 34KHN3M   ( 34HN3M,   34ÕÍ3Ì ) .
C Si Mn Ni S P Cr Mo
0.3 - 0.40.17 - 0.370.5 - 0.82.75 - 3.25max   0.035max   0.030.7 - 1.10.25 - 0.4


Temperature of critical points of the grade 34KHN3M   ( 34HN3M,   34ÕÍ3Ì ).
Ac1 = 720 ,      Ac3(Acm) = 790 ,       Ar3(Arcm) = 490


Mechanical properties under Ò=20oÑ of the material 34KHN3M   ( 34HN3M,   34ÕÍ3Ì ) .
Assortment Dimension Direct. sâ sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Forging 100 - 300   785 640 12 38490Normalizing


    Brinell hardness of the material   34KHN3M   ( 34HN3M,   34ÕÍ3Ì )   ,       HB 10 -1= 277 - 321   MPa


Physical properties of the material 34KHN3M   ( 34HN3M,   34ÕÍ3Ì ) .
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 2.07     7830    
100 2.03 10.8 36 7810    
200 1.98 11.6 37 7780    
300 1.92 12.5 37      
400 1.82 13.3 37 7710    
500 1.73 13.5 35      
600   13.7 31 7650    
700     28      
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 34KHN3M   ( 34HN3M,   34ÕÍ3Ì ) .
  Weldability: limited weldability.
 Flakes : predisposed
Temper brittleness: weakly predisposed



Specification :
Mechanical properties :
sâ - 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

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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