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Metals -> Casting steel -> Casting steel for general purposes

Characteristics of the material 20KHML   ( 20HML,   20 ).

Material : 20KHML   ( 20HML,   20 )
Classification : Casting steel for general purposes


Chemical composition in % of the material 20KHML   ( 20HML,   20 ) .
C Si Mn Ni S P Cr Mo Cu
0.15 - 0.250.2 - 0.420.4 - 0.9max   0.3max   0.04max   0.040.4 - 0.70.4 - 0.6max   0.3


Mechanical properties under =20o of the material 20KHML   ( 20HML,   20 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting to 100   440 245 18 30290Normalizing 880 - 900oC,Drawing 600 - 650oC,


    Brinell hardness of the material   20KHML   ( 20HML,   20 )   (normalize, tempering) ,       HB 10 -1= 149 - 229   MPa


Physical properties of the material 20KHML   ( 20HML,   20 ) .
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       7800    
100   10.9   7780    
200   12.4   7750    
300   12.8   7720    
400   13.1   7690    
500   13.6   7650    
600   13.9   7620    
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 20KHML   ( 20HML,   20 ) .
  Weldability: limited weldability.
Temper brittleness: not predisposed


Technological properties of the material 20KHML   ( 20HML,   20 ) .
 Linear shrinkage, % : 2.2 - 2.3



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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