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

Characteristics of the material 25L   ( 25L,   25 ).

Material : 25L   ( 25L,   25 )
Substitute: 20, 30
Classification : Casting steel for general purposes


Chemical composition in % of the material 25L   ( 25L,   25 ) .
C Si Mn Ni S P Cr Cu
0.22 - 0.30.2 - 0.520.35 - 0.9max   0.3max   0.045max   0.04max   0.3max   0.3


Temperature of critical points of the grade 25L   ( 25L,   25 ).
Ac1 = 735 ,      Ac3(Acm) = 840 ,       Ar3(Arcm) = 824 ,       Ar1 = 680


Mechanical properties under =20o of the material 25L   ( 25L,   25 ) .
Assortment Dimension Direct. s sT d5 y KCU Heat treatment
- mm - MPa MPa % % kJ / m2 -
Casting to 100   450 240 19 30400Normalizing 880 - 900oC,Drawing 610 - 630oC,


    Brinell hardness of the material   25L   ( 25L,   25 )   ,       HB 10 -1= 124 - 207   MPa


Physical properties of the material 25L   ( 25L,   25 ) .
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     51 7830    
100   11.5 76   470  
200   12.9 65   483  
300   13 44      
400   13.2 38   525  
500   13.5        
600         571  
T E 10- 5 a 10 6 l r C R 10 9


Technological properties of the material 25L   ( 25L,   25 ) .
  Weldability: limited weldability.
 Flakes : not predisposed
Temper brittleness: not predisposed


Technological properties of the material 25L   ( 25L,   25 ) .
 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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