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Characteristics for grade     20KHGSNDML   ( 20ХГСНДМЛ )



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



Chemical composition in % for grade   20KHGSNDML   ( 20ХГСНДМЛ )
C Si Mn Ni S P Cr Mo Ti Cu
0.18 - 0.240.9 - 1.20.9 - 1.31.1 - 1.5max   0.045max   0.050.6 - 0.90.1 - 0.150.03 - 0.070.4 - 0.6


Mechanical properties under Т=20oС for grade   20KHGSNDML   ( 20ХГСНДМЛ )
Assortment Dimension Direct. sв sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting to 100   650 500 12 20400Guenching 910 - 930oC,Drawing 640 - 660oC,


    Brinell hardness for     20KHGSNDML   ( 20ХГСНДМЛ )   ,       HB 10 -1 = 207 - 269   MPa


Technological properties for grade   20KHGSNDML   ( 20ХГСНДМЛ )
  Weldability: limited weldability.


Technological properties of the material   20KHGSNDML   ( 20ХГСНДМЛ ) .
        Linear shrinkage : 1.9   %


Physical properties for grade   20KHGSNDML   ( 20ХГСНДМЛ )
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 2.09   25 7830   433
100 2.01 11 27   491 467
200 1.93 11.8 28   500 531
300 1.84 12.5 30   521 605
400 1.76 12.9 32   533 705
500 1.69 13.3 33   554 835
600 1.53 13.5 33   584 967
700 1.33 13.6 31   622 1127
800 1.28 11 28   689 1175
900   12.1 28   685 1205
T E 10- 5 a 10 6 l r C R 10 9




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]

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

  20KHGSNDML   ( 20ХГСНДМЛ ) - 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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