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Characteristics of the material 35KH   ( 35H,   35 ).

Material : 35KH   ( 35H,   35 )
Substitute: 40, 35
Classification : Alloy structurall steel


Chemical composition in % of the material 35KH   ( 35H,   35 ) .
C Si Mn Ni S P Cr Cu
0.31 - 0.390.17 - 0.370.5 - 0.8max   0.3max   0.035max   0.0350.8 - 1.1max   0.3


Temperature of critical points of the grade 35KH   ( 35H,   35 ).
Ac1 = 743 ,      Ac3(Acm) = 782 ,       Ar3(Arcm) = 730 ,       Ar1 = 693 ,       Mn = 360


Mechanical properties under =20o of the material 35KH   ( 35H,   35 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Forging to 100   655 490 16 45590Guenching and drawing
Forging 100 - 300   615 395 15 40540Guenching and drawing
Bar 25   910 735 11 45690Guenching 860oC, oil, Drawing 500oC, water,


    Brinell hardness of the material   35KH   ( 35H,   35 )   (annealing) ,       HB 10 -1= 197   MPa
    Brinell hardness of the material   35KH   ( 35H,   35 )   (cold-drawn, cold-worked) ,       HB 10 -1= 207   MPa


Physical properties of the material 35KH   ( 35H,   35 ) .
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 2.14          
100   11.3 47      
200   12 43      
300 2.07 12.9 40      
400   13.7 36      
500 1.76 14.2        
600   14.6        
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 35KH   ( 35H,   35 ) .
  Weldability: limited weldability.
 Flakes : weakly predisposed
Temper brittleness: predisposed



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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