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Characteristics of the material 34KHN3MА   ( 34HN3MА,   34ХН3МА ).

Material : 34KHN3MА   ( 34HN3MА,   34ХН3МА )
Classification : Alloy structurall steel


Chemical composition in % of the material 34KHN3MА   ( 34HN3MА,   34ХН3МА ) .
C Si Mn Ni S P Cr Mo
0.3 - 0.40.17 - 0.370.5 - 0.82.75 - 3.75max   0.035max   0.030.7 - 1.10.25 - 0.4


Temperature of critical points of the grade 34KHN3MА   ( 34HN3MА,   34ХН3МА ).
Ac1 = 720 ,      Ac3(Acm) = 790


Mechanical properties under Т=20oС of the material 34KHN3MА   ( 34HN3MА,   34ХН3МА ) .
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Forging to 100   950 800 12 40  


    Brinell hardness of the material   34KHN3MА   ( 34HN3MА,   34ХН3МА )   ,       HB 10 -1= 293 - 331   MPa


Technological properties of the material 34KHN3MА   ( 34HN3MА,   34ХН3МА ) .
  Weldability: hard weldability.
 Flakes : predisposed
Temper brittleness: weakly predisposed



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]

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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