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Characteristics for grade     20DKHL   ( 20ДХЛ )



      Grade :     20DKHL   ( 20ДХЛ )
      Classification :   Casting alloy steel for general purposes
      Equivalent grades:     Is absent



Chemical composition in % for grade   20DKHL   ( 20ДХЛ )
C Si Mn S P Cr Cu
0.15 - 0.250.2 - 0.40.5 - 0.8max   0.04max   0.040.8 - 1.11.4 - 1.6


Mechanical properties under Т=20oС for grade   20DKHL   ( 20ДХЛ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting, GOST 977-88     491 392 12 30294 
Casting, GOST 977-88     638 540 12 30392 


    Brinell hardness for     20DKHL   ( 20ДХЛ )   ,       HB 10 -1 = 143 - 187   MPa
    Brinell hardness for     20DKHL   ( 20ДХЛ )   (quenching, tempering) ,       HB 10 -1 = 187 - 240   MPa


Heat treatment of the material   20DKHL   ( 20ДХЛ )
Normalizing 880 - 890 ° C, Tempering 560 - 600 ° C
Hardening 880 - 890 ° C, Tempering 560 - 600 ° C



Types of delivery of grade   20DKHL   ( 20ДХЛ )
B82 - Steel Castings


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]

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]

  20DKHL   ( 20ДХЛ ) - Casting alloy steel for general purposes: chemical composition, mechanical and physical properties, hardness
Database of steels and alloys (Marochnik) contains information about chemical composition and properties more then 3000 steels and alloys

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