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

Characteristics of the material 38KH2MYU   ( 38H2MJU,   382 ).

Material : 38KH2MYU   ( 38H2MJU,   382 )
Substitute: 382, 38, 203. 382
Classification : Relaxation-resistant steel


Chemical composition in % of the material 38KH2MYU   ( 38H2MJU,   382 ) .
C Si Mn Ni S P Cr MoAl Cu
0.35 - 0.420.2 - 0.450.3 - 0.6max   0.3max   0.025max   0.0251.35 - 1.650.15 - 0.250.7 - 1.1max   0.3


Temperature of critical points of the grade 38KH2MYU   ( 38H2MJU,   382 ).
Ac1 = 800 ,      Ac3(Acm) = 940 ,       Ar1 = 730


Mechanical properties under =20o of the material 38KH2MYU   ( 38H2MJU,   382 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Bar   longitudinal 825 665 16.5 641600Guenching 930 - 940oC, oil, Drawing 660oC, 5h,Cooling air,


    Brinell hardness of the material   38KH2MYU   ( 38H2MJU,   382 )   (annealing) ,       HB 10 -1= 229   MPa


Physical properties of the material 38KH2MYU   ( 38H2MJU,   382 ) .
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 2.09   33 7710    
100 2.02 11.5 33   496  
200 1.94 11.8 32   517  
300 1.9 12.7 31   533  
400 1.81 13.4 20   546  
500 1.74 13.9 20   575  
600 1.62 14.7 28   609  
700 1.47 14.9 27   638  
800 1.37   27   676  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 38KH2MYU   ( 38H2MJU,   382 ) .
  Weldability: is not used.
 Flakes : predisposed
Temper brittleness: not 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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